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Questions and Answers
Which gas is used to fill balloons and airships?
Which gas is used to fill balloons and airships?
Which gas is used to produce a fog effect on stages?
Which gas is used to produce a fog effect on stages?
Which gas is used to fill light bulbs?
Which gas is used to fill light bulbs?
Which gas is used for storing living cells and tissues?
Which gas is used for storing living cells and tissues?
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Which gas is used to put out fires in fire extinguishers?
Which gas is used to put out fires in fire extinguishers?
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Which gas is used in cutting metals in industry?
Which gas is used in cutting metals in industry?
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Which gas is used to prevent food from going bad in some food packages?
Which gas is used to prevent food from going bad in some food packages?
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Which gas is used in advertising lights?
Which gas is used in advertising lights?
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Which gas does not support burning and is denser than air?
Which gas does not support burning and is denser than air?
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Which gas is used to help with breathing difficulties?
Which gas is used to help with breathing difficulties?
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Which gas causes a burning splint to burn more brightly?
Which gas causes a burning splint to burn more brightly?
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What happens to the glowing splint when placed in a test tube of oxygen?
What happens to the glowing splint when placed in a test tube of oxygen?
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What happens to the hydrogencarbonate indicator when added to a test tube of carbon dioxide?
What happens to the hydrogencarbonate indicator when added to a test tube of carbon dioxide?
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What happens to the limewater when added to a test tube of carbon dioxide?
What happens to the limewater when added to a test tube of carbon dioxide?
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What color does dry cobalt chloride paper turn when exposed to water?
What color does dry cobalt chloride paper turn when exposed to water?
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What happens to the color of the cobalt chloride paper when it is placed above a beaker of hot water?
What happens to the color of the cobalt chloride paper when it is placed above a beaker of hot water?
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Which gases do not have simple tests for identification?
Which gases do not have simple tests for identification?
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What is the purpose of the gas lighter in the experiment?
What is the purpose of the gas lighter in the experiment?
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What is the purpose of the hydrogencarbonate indicator in the experiment?
What is the purpose of the hydrogencarbonate indicator in the experiment?
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What is the purpose of the limewater in the experiment?
What is the purpose of the limewater in the experiment?
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Which of the following correctly describes why there are no living things found on the Moon?
Which of the following correctly describes why there are no living things found on the Moon?
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Which of the following correctly describes what air is made up of?
Which of the following correctly describes what air is made up of?
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Who discovered oxygen and what experiments did they do that led to the discovery?
Who discovered oxygen and what experiments did they do that led to the discovery?
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Which of the following gases is NOT found in air according to the information provided?
Which of the following gases is NOT found in air according to the information provided?
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How can we test for the presence of gases such as oxygen, carbon dioxide, and water vapor?
How can we test for the presence of gases such as oxygen, carbon dioxide, and water vapor?
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Which of the following gases is the most abundant in air?
Which of the following gases is the most abundant in air?
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Which of the following is NOT a property used to test gases?
Which of the following is NOT a property used to test gases?
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What is the main difference between the Earth and the Moon when it comes to the presence of living things?
What is the main difference between the Earth and the Moon when it comes to the presence of living things?
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What is the Moon made of?
What is the Moon made of?
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Which of the following correctly describes the composition of air?
Which of the following correctly describes the composition of air?
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