- Understand the classification of elements as metals and non-metals based on their properties.
- Identify and describe the physical properties of metals and non-metals.
- Conduct experiments to observe the physical properties of various metals and non-metals.
- Analyze the results of experiments to differentiate between metals and non-metals.
- Explain the chemical properties of metals and how they react with acids and bases.
- Discuss the reactivity series of metals and their implications in displacement reactions.
- Explore the concept of alloys and their significance in improving metal properties.
- Investigate methods to prevent corrosion of metals.
Metals and Non-metals
CBSE Learning Objectives – Key Concepts & Skills You Must Know
CBSE Revision Notes & Quick Summary for Last-Minute Study
Metals and Non-metals
3.1 Physical Properties
3.1.1 Metals
- Metallic Lustre: Metals have a shining surface in their pure state.
- Hardness: Varies among metals; some can be cut with a knife (e.g., sodium).
- Malleability: Metals can be hammered into thin sheets.
- Ductility: Metals can be drawn into wires.
- Conductivity: Metals are good conductors of electricity and heat.
- Sonority: Metals produce sound when struck.
Activities to Observe Metal Properties
- Activity 3.1: Clean and observe samples of iron, copper, aluminium, and magnesium.
- Activity 3.2: Cut metals with a knife and observe.
- Activity 3.6: Set up an electric circuit to test conductivity of metals.
3.1.2 Non-metals
- Non-metals are fewer in number compared to metals.
- Examples: Carbon, sulphur, iodine, oxygen, hydrogen.
- Physical states: Mostly solids or gases, except bromine (liquid).
Activities to Observe Non-metal Properties
- Activity 3.7: Collect samples of carbon, sulphur, and iodine; perform similar tests as for metals.
3.2 Chemical Properties of Metals
- Metals react with water and acids, forming basic oxides.
- Most non-metals produce acidic oxides when dissolved in water.
Example Reactions
- Magnesium + Sulphur: Produces a basic solution.
- Burning Sulphur: Produces acidic fumes.
3.3 Reactivity of Metals and Non-metals
- Reactivity is related to the tendency to achieve a stable electron configuration.
- Metals lose electrons to form positive ions; non-metals gain electrons to form negative ions.
Summary of Key Points
- Metals are generally lustrous, malleable, ductile, and good conductors.
- Non-metals have properties opposite to metals; they are not malleable or ductile and are poor conductors, except for graphite.
- The extraction of metals involves processes like electrolysis and reduction.
- Corrosion is a common issue with metals like iron when exposed to moisture.
CBSE Exam Tips, Important Questions & Common Mistakes to Avoid
Common Mistakes and Exam Tips
Common Pitfalls
- Misclassification of Elements: Students often classify elements incorrectly based on physical properties alone, overlooking exceptions such as iodine being lustrous (a non-metal) and gallium having a low melting point (a metal).
- Ignoring Chemical Properties: Failing to consider chemical properties when classifying metals and non-metals can lead to misunderstandings, as many metals and non-metals behave differently in reactions.
- Overlooking Exceptions: Students may forget that not all metals are solid at room temperature (e.g., mercury) and that some non-metals can exist in different forms (allotropes).
Tips for Success
- Understand Properties: Familiarize yourself with the physical and chemical properties of metals and non-metals, including malleability, ductility, and conductivity.
- Conduct Experiments: Engage in hands-on activities to observe properties directly, such as testing conductivity and observing reactions with acids.
- Use Tables: Create comparison tables for metals and non-metals to visualize differences in properties and reactivity.
- Practice Reactions: Write out and balance chemical equations for reactions involving metals and non-metals to reinforce understanding.
- Review the Activity Series: Memorize the activity series of metals to predict reactivity and displacement reactions effectively.
CBSE Quiz & Practice Test – MCQs, True/False Questions with Solutions
Multiple Choice Questions
A.
Water
B.
Metal Sample
C.
Hydrogen Gas
D.
Glass-wool
Correct Answer: C
Solution:
Hydrogen gas collects at the top of the container.
A.
The reaction will be more vigorous, producing hydrogen gas at a faster rate.
B.
The reaction will stop immediately, producing no hydrogen gas.
C.
The cork will melt due to excessive heat.
D.
The water in the container will evaporate completely.
Correct Answer: A
Solution:
An exothermic reaction with water will release more energy, increasing the rate of hydrogen gas production.
A.
Glass Tube
B.
Metal Sample
C.
Cork
D.
Burner
Correct Answer: C
Solution:
The cork seals one end of the tube, guiding gas through the delivery tube.
A.
It holds the metal sample in place
B.
It supports the entire apparatus
C.
It directs the hydrogen gas to the container
D.
It prevents the burner from overheating
Correct Answer: B
Solution:
The stand supports the apparatus on both sides, ensuring stability during the reaction.
A.
To allow air to enter the tube
B.
To seal the tube and direct the gas through the delivery tube
C.
To support the metal sample
D.
To cool the reaction
Correct Answer: B
Solution:
The cork seals one end of the tube, ensuring that the gas is directed through the delivery tube to the container.
A.
The metal sample would not react, halting hydrogen gas production.
B.
The glass-wool would absorb more water.
C.
The delivery tube would collapse.
D.
The container would overflow with water.
Correct Answer: A
Solution:
The burner is responsible for heating the metal sample to initiate the reaction. Without it functioning, the reaction and subsequent hydrogen gas production would not occur.
A.
The rate of hydrogen gas production will increase.
B.
The rate of hydrogen gas production will decrease.
C.
There will be no change in the rate of hydrogen gas production.
D.
The reaction will stop completely.
Correct Answer: A
Solution:
Increasing the temperature generally increases the rate of chemical reactions, hence a higher temperature burner will increase the rate of hydrogen gas production.
A.
To heat the metal sample
B.
To seal the tube
C.
To provide moisture
D.
To collect hydrogen gas
Correct Answer: C
Solution:
The glass-wool soaked in water provides moisture, which may be necessary for the reaction.
A.
Oxygen gas
B.
Hydrogen gas
C.
Carbon dioxide gas
D.
Nitrogen gas
Correct Answer: B
Solution:
Hydrogen gas collects at the top of the container.
A.
It provides a surface for the reaction to occur.
B.
It guides the hydrogen gas into the delivery tube.
C.
It acts as a filter for impurities.
D.
It prevents water from entering the glass tube.
Correct Answer: B
Solution:
The cork seals one end of the tube and guides the hydrogen gas through the delivery tube, ensuring that the gas is channeled correctly into the container.
A.
Glass Tube
B.
Container
C.
Delivery Tube
D.
Burner
Correct Answer: B
Solution:
The container is filled with water, receiving hydrogen gas via the delivery tube.
A.
To absorb excess heat from the burner.
B.
To seal the tube and direct gas through the delivery tube.
C.
To prevent the metal sample from reacting too quickly.
D.
To maintain the temperature of the water in the container.
Correct Answer: B
Solution:
The cork seals one end of the tube, ensuring that the hydrogen gas produced is directed through the delivery tube into the container.
A.
Glass Tube
B.
Burner
C.
Delivery Tube
D.
Cork
Correct Answer: C
Solution:
The delivery tube channels gas from the reaction to the container.
A.
The metal sample will not react, and no hydrogen gas will be produced.
B.
The reaction will proceed faster, producing more hydrogen gas.
C.
The reaction will produce hydrogen gas with higher purity.
D.
The reaction will remain unaffected.
Correct Answer: A
Solution:
The presence of water is necessary for the reaction to produce hydrogen gas. Without it, the metal sample will not react.
A.
The rate of hydrogen gas collection will increase.
B.
The rate of hydrogen gas collection will decrease.
C.
The hydrogen gas will not reach the container.
D.
There will be no effect on the rate of gas collection.
Correct Answer: B
Solution:
Extending the delivery tube increases the resistance to gas flow, thereby decreasing the rate of hydrogen gas collection.
A.
It acts as a catalyst
B.
It reacts to produce hydrogen gas
C.
It absorbs heat from the burner
D.
It prevents the cork from moving
Correct Answer: B
Solution:
The metal sample reacts to produce hydrogen gas in the setup.
A.
It acts as a catalyst for the reaction.
B.
It seals the tube to direct gas flow through the delivery tube.
C.
It absorbs excess water from the reaction.
D.
It provides structural support to the glass tube.
Correct Answer: B
Solution:
The cork seals one end of the tube, ensuring that the gas produced is directed through the delivery tube to the container.
A.
The hydrogen gas will be collected more rapidly in the container.
B.
The hydrogen gas will not reach the container.
C.
The rate of gas collection will decrease due to increased resistance.
D.
The reaction will produce less hydrogen gas.
Correct Answer: C
Solution:
Extending the delivery tube increases the resistance to gas flow, thereby decreasing the rate at which hydrogen gas is collected.
A.
Hydrogen gas will escape into the atmosphere.
B.
The rate of reaction will increase.
C.
Hydrogen gas will be collected more efficiently.
D.
The experiment will stop as the container overflows.
Correct Answer: A
Solution:
A smaller container will fill up quickly with hydrogen gas, and any excess gas will escape into the atmosphere.
A.
To heat the metal sample
B.
To channel gas from the reaction to a container
C.
To support the apparatus
D.
To soak in water
Correct Answer: B
Solution:
The delivery tube is responsible for channeling gas from the reaction to a container.
A.
Glass tube
B.
Stand
C.
Cork
D.
Delivery tube
Correct Answer: B
Solution:
The stand supports the apparatus, present on both sides of the setup.
A.
To cool down the hydrogen gas before collection.
B.
To transport hydrogen gas from the reaction site to the container.
C.
To measure the rate of gas production.
D.
To act as a safety valve for excess pressure.
Correct Answer: B
Solution:
The delivery tube is responsible for channeling the hydrogen gas produced during the reaction from the glass tube to the container where it is collected.
A.
It cools down the metal sample
B.
It heats the metal sample to initiate the reaction
C.
It provides light for observation
D.
It acts as a catalyst
Correct Answer: B
Solution:
The burner heats the metal sample, which is necessary to start the chemical reaction.
A.
Glass-wool
B.
Burner
C.
Stand
D.
Cork
Correct Answer: C
Solution:
The stand supports the apparatus, present on both sides of the setup.
A.
To cool down the reaction
B.
To provide light for observation
C.
To heat the metal sample
D.
To ignite the hydrogen gas
Correct Answer: C
Solution:
The burner is used to heat the metal sample, which is necessary for the reaction to proceed.
A.
To heat the metal sample
B.
To support the apparatus
C.
To guide gas through the delivery tube
D.
To collect hydrogen gas
Correct Answer: B
Solution:
The stand supports the apparatus, ensuring stability during the reaction.
A.
It stores the metal sample
B.
It holds the burner
C.
It collects hydrogen gas
D.
It supports the glass tube
Correct Answer: C
Solution:
The container collects hydrogen gas that is channeled through the delivery tube.
A.
Hydrogen gas production will stop immediately.
B.
Hydrogen gas production will slow down gradually.
C.
Hydrogen gas production will continue at the same rate.
D.
Hydrogen gas production will increase temporarily.
Correct Answer: B
Solution:
Turning off the burner will cause the temperature to drop, slowing down the reaction and thus the production of hydrogen gas.
A.
The apparatus may become unstable and fall.
B.
The reaction rate would increase.
C.
Hydrogen gas would be produced at a higher rate.
D.
The metal sample would not react.
Correct Answer: A
Solution:
The stand provides stability to the apparatus. Removing it could cause the setup to become unstable and potentially fall, disrupting the experiment.
A.
The pressure inside the tube will increase, potentially causing it to burst.
B.
The reaction will speed up.
C.
The reaction will slow down.
D.
The hydrogen gas will escape into the atmosphere.
Correct Answer: A
Solution:
Blocking the delivery tube will prevent the escape of hydrogen gas, causing pressure to build up inside the tube, which may lead to it bursting.
A.
Glass Tube
B.
Metal Sample
C.
Container
D.
Stand
Correct Answer: C
Solution:
The container filled with water receives and collects the hydrogen gas.
A.
The reaction will proceed at a slower rate.
B.
The reaction will stop completely.
C.
The reaction will produce a different gas.
D.
The metal sample will oxidize.
Correct Answer: B
Solution:
The burner provides the necessary heat to initiate and sustain the reaction. Without it, the reaction will not occur.
A.
The reaction will proceed at a slower rate, producing hydrogen gas more slowly.
B.
The metal sample will melt, causing an overflow of hydrogen gas.
C.
The glass-wool will dry out, stopping the reaction completely.
D.
The container will fill with water instead of hydrogen gas.
Correct Answer: A
Solution:
A lower intensity heat source will provide less energy to the metal sample, slowing down the rate of reaction and consequently slowing the production of hydrogen gas.
A.
Increased rate of hydrogen gas production
B.
Decreased rate of hydrogen gas production
C.
No change in the rate of hydrogen gas production
D.
Formation of a different gas instead of hydrogen
Correct Answer: A
Solution:
A more reactive metal with water will increase the rate of hydrogen gas production due to a faster reaction rate.
A.
Glass-wool
B.
Cork
C.
Burner
D.
Stand
Correct Answer: B
Solution:
The cork seals one end of the glass tube, guiding gas through the delivery tube.
A.
Hydrogen gas will escape, reducing the amount collected.
B.
The reaction will proceed faster.
C.
The reaction will produce a different gas.
D.
The metal sample will not react.
Correct Answer: A
Solution:
An airtight seal is necessary to ensure hydrogen gas is directed through the delivery tube; otherwise, it will escape, reducing the collection efficiency.
A.
Hydrogen gas will escape into the atmosphere, reducing collection efficiency.
B.
The hydrogen gas will be collected more efficiently.
C.
The reaction will not produce hydrogen gas.
D.
The delivery tube will become blocked.
Correct Answer: A
Solution:
Without water in the container, hydrogen gas will not be trapped effectively and will escape into the atmosphere.
A.
It supports the entire apparatus, ensuring stability during the reaction.
B.
It acts as a heat source for the reaction.
C.
It collects the hydrogen gas produced.
D.
It absorbs excess heat from the burner.
Correct Answer: A
Solution:
The stand provides structural support to maintain the stability of the apparatus during the reaction process.
A.
The rate of hydrogen gas production will increase.
B.
The rate of hydrogen gas production will decrease.
C.
There will be no change in the rate of hydrogen gas production.
D.
The hydrogen gas will be produced at the same rate but with a different purity.
Correct Answer: B
Solution:
Replacing the metal with a less reactive one will decrease the rate of reaction, thus reducing the rate of hydrogen gas production.
A.
It reacts with the metal sample
B.
It is absorbed by the glass-wool
C.
It is collected at the top of the container
D.
It escapes into the air
Correct Answer: C
Solution:
The hydrogen gas is collected at the top of the container filled with water.
A.
Glass-wool soaked in water
B.
Cork
C.
Burner
D.
Delivery tube
Correct Answer: C
Solution:
The burner is used to heat the metal sample in the setup.
A.
Hydrogen gas will escape, and less gas will be collected in the container.
B.
The metal sample will not react, and no hydrogen gas will be produced.
C.
The burner will not function properly, reducing the reaction rate.
D.
The glass-wool will absorb more water, affecting the reaction.
Correct Answer: A
Solution:
If the cork is not properly sealed, hydrogen gas will escape through the gaps instead of being channeled through the delivery tube, leading to less gas being collected in the container.
A.
It acts as a catalyst for the reaction.
B.
It prevents the escape of hydrogen gas.
C.
It provides moisture to aid the reaction.
D.
It absorbs excess hydrogen gas.
Correct Answer: C
Solution:
The glass-wool soaked in water provides necessary moisture which can aid in the reaction process.
A.
Hydrogen gas will still be produced.
B.
No hydrogen gas will be produced.
C.
The reaction will produce a different gas.
D.
The glass tube will break due to pressure.
Correct Answer: B
Solution:
If a non-reactive metal is used, it will not react with the water or any other component in the setup, so no hydrogen gas will be produced.
A.
To cool down the metal sample
B.
To collect the hydrogen gas
C.
To act as a support for the apparatus
D.
To provide water for the reaction
Correct Answer: B
Solution:
The container filled with water collects the hydrogen gas that is channeled through the delivery tube.
A.
More hydrogen gas can be collected.
B.
The water level would rise faster.
C.
The reaction would proceed faster.
D.
The metal sample would dissolve.
Correct Answer: A
Solution:
A larger container allows for more hydrogen gas to be collected before it becomes saturated.
A.
Increased resistance to gas flow, potentially slowing down gas collection.
B.
Higher pressure in the container, leading to faster gas collection.
C.
The reaction will stop due to lack of space for gas expansion.
D.
The metal sample will react more vigorously.
Correct Answer: A
Solution:
A longer delivery tube increases the resistance to the flow of hydrogen gas, which may slow down the rate at which gas is collected in the container.
A.
To heat the metal sample
B.
To support the apparatus
C.
To collect hydrogen gas
D.
To seal the glass tube
Correct Answer: B
Solution:
The stand supports the apparatus, ensuring stability during the reaction.
A.
To seal the tube and guide gas through the delivery tube
B.
To hold the metal sample in place
C.
To absorb excess water
D.
To collect hydrogen gas
Correct Answer: A
Solution:
The cork seals one end of the tube, ensuring that gas is directed through the delivery tube.
A.
It supports the entire apparatus to prevent it from tipping over.
B.
It conducts heat to the metal sample.
C.
It absorbs excess hydrogen gas.
D.
It acts as a catalyst in the reaction.
Correct Answer: A
Solution:
The stand provides structural support to the apparatus, ensuring stability during the reaction.
A.
Inside the container filled with water
B.
Within the glass tube
C.
On top of the burner
D.
At the end of the delivery tube
Correct Answer: B
Solution:
The metal sample is positioned within the glass tube.
A.
The reaction will produce hydrogen gas at a faster rate.
B.
The reaction will produce hydrogen gas at a slower rate.
C.
The reaction will produce oxygen gas instead.
D.
The reaction will not occur.
Correct Answer: A
Solution:
A more concentrated acid solution will react more vigorously with the metal, increasing the rate of hydrogen gas production.
A.
It acts as a coolant for the reaction
B.
It collects the hydrogen gas produced
C.
It serves as a reactant in the chemical reaction
D.
It stabilizes the apparatus
Correct Answer: B
Solution:
The container filled with water is used to collect the hydrogen gas produced during the reaction.
A.
More hydrogen gas can be collected
B.
Less hydrogen gas can be collected
C.
The reaction will stop
D.
The reaction will become more exothermic
Correct Answer: A
Solution:
A larger container allows for more hydrogen gas to be collected without changing the nature of the reaction.
A.
To initiate the reaction by providing moisture.
B.
To act as a catalyst for the reaction.
C.
To absorb excess hydrogen gas.
D.
To prevent the metal sample from overheating.
Correct Answer: A
Solution:
The glass-wool soaked in water provides the necessary moisture to react with the metal sample, initiating the production of hydrogen gas.
A.
To heat the metal sample
B.
To channel gas to the container
C.
To seal the glass tube
D.
To collect hydrogen gas
Correct Answer: A
Solution:
The burner is used to heat the metal sample in the setup.
A.
To heat the metal sample
B.
To guide gas through the delivery tube
C.
To collect hydrogen gas
D.
To support the apparatus
Correct Answer: B
Solution:
The cork seals one end of the tube, guiding gas through the delivery tube.
A.
Glass Tube
B.
Cork
C.
Stand
D.
Burner
Correct Answer: B
Solution:
The cork seals one end of the tube and guides the gas through the delivery tube into the container.
A.
The entire setup may collapse, disrupting the experiment.
B.
The reaction will proceed faster due to increased heat exposure.
C.
The metal sample will not react due to lack of support.
D.
The hydrogen gas will be collected more efficiently.
Correct Answer: A
Solution:
The stand provides structural support to the apparatus. Removing it may cause the setup to collapse, disrupting the experiment and preventing the collection of hydrogen gas.
A.
To heat the metal sample
B.
To guide the hydrogen gas to the container
C.
To measure the volume of gas produced
D.
To provide oxygen for the reaction
Correct Answer: B
Solution:
The delivery tube channels the hydrogen gas from the reaction to the container.
A.
Glass-wool soaked in water
B.
Cork
C.
Burner
D.
Stand
Correct Answer: B
Solution:
The cork seals one end of the tube, guiding the gas through the delivery tube.
A.
To heat the metal sample
B.
To collect hydrogen gas
C.
To support the apparatus
D.
To soak the glass-wool
Correct Answer: C
Solution:
The stand supports the apparatus, present on both sides of the setup.
A.
Glass-wool
B.
Metal sample
C.
Cork
D.
Burner
Correct Answer: C
Solution:
The cork seals one end of the tube, guiding gas through the delivery tube.
A.
The reaction will proceed faster.
B.
The reaction will stop.
C.
The rate of hydrogen gas collection will increase.
D.
There will be no significant change in the experiment.
Correct Answer: D
Solution:
Replacing the cork with a rubber stopper should have no significant effect on the experiment as long as it maintains an airtight seal.
A.
To act as a catalyst for the reaction.
B.
To prevent the escape of hydrogen gas.
C.
To maintain a moist environment for the reaction.
D.
To absorb excess heat from the burner.
Correct Answer: C
Solution:
The glass-wool soaked in water is used to maintain a moist environment, which can be crucial for certain reactions where moisture is necessary for the reaction to proceed efficiently.
A.
To contain the metal sample and glass-wool
B.
To collect hydrogen gas
C.
To support the apparatus
D.
To heat the metal sample
Correct Answer: A
Solution:
The glass tube contains the metal sample and glass-wool soaked in water.
A.
The reaction will speed up.
B.
The metal sample will melt.
C.
Pressure will build up, potentially causing the setup to fail.
D.
Water will flow back into the glass tube.
Correct Answer: C
Solution:
Blocking the delivery tube will cause pressure to build up as the gas has no outlet, potentially leading to failure of the setup.
A.
Hydrogen gas would collect more slowly.
B.
The reaction would stop immediately.
C.
The water in the container would evaporate.
D.
The metal sample would not react.
Correct Answer: A
Solution:
A partially blocked delivery tube would slow down the flow of hydrogen gas, leading to slower collection.
A.
To dissolve the hydrogen gas as it is produced.
B.
To provide a medium for observing gas bubbles.
C.
To cool the hydrogen gas before collection.
D.
To prevent the hydrogen gas from escaping into the atmosphere.
Correct Answer: D
Solution:
The container is filled with water to prevent the hydrogen gas from escaping into the atmosphere and to allow it to be collected at the top of the container.
A.
Hydrogen gas will be collected at a slower rate.
B.
Hydrogen gas will not be collected at all.
C.
The rate of hydrogen gas collection will remain the same.
D.
The salt solution will react with the hydrogen gas.
Correct Answer: C
Solution:
The salt solution will not significantly affect the collection of hydrogen gas compared to water, as the gas is collected above the liquid.
A.
To cool down the hydrogen gas.
B.
To prevent the glass tube from breaking.
C.
To collect the hydrogen gas at the top.
D.
To provide a reaction medium for the metal sample.
Correct Answer: C
Solution:
The container is filled with water to allow the hydrogen gas to rise and collect at the top, as it is less dense than water.
A.
To absorb excess hydrogen gas
B.
To prevent the metal sample from overheating
C.
To provide moisture for the reaction
D.
To filter impurities from the gas
Correct Answer: C
Solution:
The glass-wool soaked in water provides moisture necessary for the reaction to proceed.
A.
To increase the pressure inside the glass tube.
B.
To initiate the chemical reaction by providing activation energy.
C.
To sterilize the metal sample before the reaction.
D.
To evaporate any water present in the tube.
Correct Answer: B
Solution:
The burner is used to heat the metal sample to provide the necessary activation energy to initiate the chemical reaction that produces hydrogen gas.
A.
Reduced flow of hydrogen gas into the container
B.
Increased flow of hydrogen gas into the container
C.
No effect on the flow of hydrogen gas
D.
Complete cessation of hydrogen gas production
Correct Answer: A
Solution:
An obstruction in the delivery tube will reduce the flow rate of hydrogen gas into the container.
A.
Increasing the temperature of the burner.
B.
Decreasing the amount of water in the glass-wool.
C.
Using a larger metal sample.
D.
Using a longer delivery tube.
Correct Answer: A
Solution:
Increasing the temperature of the burner would provide more energy for the reaction, thereby increasing the rate of hydrogen gas production.
A.
Hydrogen gas would escape, reducing the amount collected.
B.
The reaction rate would increase.
C.
The metal sample would not heat properly.
D.
Water would enter the glass tube.
Correct Answer: A
Solution:
An airtight cork is essential to guide the gas through the delivery tube. If the cork is not airtight, hydrogen gas would escape, reducing the amount collected.
A.
Glass-wool
B.
Metal sample
C.
Cork
D.
Stand
Correct Answer: C
Solution:
The cork seals one end of the tube, guiding the gas through the delivery tube.
A.
Glass tube
B.
Delivery tube
C.
Container
D.
Burner
Correct Answer: C
Solution:
The container, filled with water, is where the hydrogen gas collects at the top after being channeled through the delivery tube.
A.
The hydrogen gas will take longer to reach the container, slowing down the collection process.
B.
The hydrogen gas will not reach the container at all.
C.
The hydrogen gas will reach the container faster.
D.
The delivery tube will cause the hydrogen gas to condense.
Correct Answer: A
Solution:
A longer delivery tube increases the distance the gas must travel, slowing down its arrival at the container.
A.
To generate hydrogen gas when heated
B.
To absorb water from the glass-wool
C.
To act as a catalyst for the reaction
D.
To seal the tube
Correct Answer: A
Solution:
The metal sample is heated by the burner to generate hydrogen gas.
A.
It is absorbed by the glass-wool
B.
It is trapped by the cork
C.
It is collected at the top of the container filled with water
D.
It is dissolved in water
Correct Answer: C
Solution:
The hydrogen gas is collected at the top of the container filled with water, as it is less dense than water.
A.
To heat the metal sample
B.
To seal the tube
C.
To collect hydrogen gas
D.
To support the apparatus
Correct Answer: A
Solution:
The burner is used to heat the metal sample, which is essential for the chemical reaction to occur.
A.
At the bottom of the container
B.
In the glass tube
C.
At the top of the container
D.
In the delivery tube
Correct Answer: C
Solution:
The hydrogen gas collects at the top of the container, as it is lighter than air.
True or False
Correct Answer: False
Solution:
The stand supports the apparatus and is present on both sides of the setup.
Correct Answer: False
Solution:
The hydrogen gas is collected at the top of the container, as described in the diagram.
Correct Answer: False
Solution:
The delivery tube channels hydrogen gas to a container filled with water, not directly into the atmosphere.
Correct Answer: True
Solution:
The diagram description notes that the stand supports the apparatus, present on both sides of the setup.
Correct Answer: True
Solution:
The burner is used to heat the metal sample, as described in the diagram.
Correct Answer: False
Solution:
The burner is used to heat the metal sample, not cool it.
Correct Answer: True
Solution:
The delivery tube is specifically designed to transport the gas produced in the reaction to the container filled with water.
Correct Answer: False
Solution:
The burner is used to heat the metal sample, not the container filled with water.
Correct Answer: True
Solution:
The glass tube is designed to hold the metal sample and allow the chemical reaction to occur within it.
Correct Answer: False
Solution:
The hydrogen gas collects at the top of the container, not the bottom, as per the diagram description.
Correct Answer: True
Solution:
The cork seals one end of the tube, guiding gas through the delivery tube and preventing it from escaping.
Correct Answer: False
Solution:
The burner is used to heat the metal sample, not cool it.
Correct Answer: False
Solution:
The metal sample is positioned within the glass tube, not outside.
Correct Answer: False
Solution:
The delivery tube channels gas from the reaction to a container, not directly into the metal sample.
Correct Answer: True
Solution:
The burner is specifically mentioned as the component used to heat the metal sample.
Correct Answer: True
Solution:
The diagram description states that the metal sample is positioned within the glass tube.
Correct Answer: True
Solution:
The stand supports the apparatus on both sides of the setup.
Correct Answer: False
Solution:
The container is filled with water, not oil, to collect hydrogen gas.
Correct Answer: False
Solution:
The glass-wool is soaked in water, not oil, as specified in the diagram description.
Correct Answer: True
Solution:
The stands provide support to the entire apparatus, ensuring stability during the experiment.
Correct Answer: False
Solution:
The delivery tube channels gas from the reaction to a container filled with water, not directly into the air.
Correct Answer: True
Solution:
The excerpt states that the metal sample is positioned within the glass tube.
Correct Answer: True
Solution:
The diagram description indicates that the stand supports the apparatus on both sides.
Correct Answer: True
Solution:
The delivery tube's purpose is to channel gas from the reaction to a container.
Correct Answer: True
Solution:
The diagram description explicitly mentions that a burner heats the metal sample, leading to the generation of hydrogen gas.
Correct Answer: False
Solution:
The burner is used to heat the metal sample, not the glass-wool soaked in water.
Correct Answer: False
Solution:
The hydrogen gas collects at the top of the container, as it is less dense than water.
Correct Answer: True
Solution:
According to the diagram description, the glass-wool is indeed soaked in water.
Correct Answer: True
Solution:
The container is filled with water and receives hydrogen gas via the delivery tube, as described in the diagram.
Correct Answer: False
Solution:
The container is filled with water, not oil, to receive hydrogen gas.
Correct Answer: False
Solution:
The delivery tube channels gas from the reaction to a container filled with water, not air.
Correct Answer: True
Solution:
The diagram description mentions that a stand is present on both sides of the setup to support the apparatus.
Correct Answer: True
Solution:
The delivery tube is described as channeling gas from the reaction to a container filled with water.
Correct Answer: False
Solution:
The container is filled with water, not air, to receive hydrogen gas.
Correct Answer: True
Solution:
The cork is specifically mentioned as sealing one end of the tube and guiding gas through the delivery tube.
Correct Answer: True
Solution:
According to the diagram description, the glass tube contains glass-wool soaked in water at one end.
Correct Answer: True
Solution:
The diagram description states that the burner heats the metal sample.
Correct Answer: True
Solution:
The cork seals one end of the tube and guides the gas through the delivery tube.
Correct Answer: False
Solution:
The metal sample is positioned within the glass tube, not outside.
Correct Answer: False
Solution:
The glass-wool is soaked in water, not oil, as per the diagram description.
Correct Answer: False
Solution:
Hydrogen gas collects at the top of the container, as it is less dense than water.
Correct Answer: True
Solution:
The glass tube contains the metal sample and the glass-wool soaked in water, as described in the diagram.