Podcast
Questions and Answers
Which gas relights a glowing splint?
Which gas relights a glowing splint?
- Noble gases
- Nitrogen
- Carbon dioxide
- Oxygen (correct)
What happens to a burning splint when it is put into a test tube of oxygen?
What happens to a burning splint when it is put into a test tube of oxygen?
- It burns more brightly
- It goes out (correct)
- It changes color
- It turns red
What happens to a glowing splint when it is put into a test tube of oxygen?
What happens to a glowing splint when it is put into a test tube of oxygen?
- It relights (correct)
- It turns blue
- It goes out
- It changes color
What color does hydrogencarbonate indicator turn when exposed to carbon dioxide?
What color does hydrogencarbonate indicator turn when exposed to carbon dioxide?
What color does limewater turn when exposed to carbon dioxide?
What color does limewater turn when exposed to carbon dioxide?
What color does dry cobalt chloride paper turn when exposed to water or water vapor?
What color does dry cobalt chloride paper turn when exposed to water or water vapor?
What is the purpose of the gas lighter in the experiment?
What is the purpose of the gas lighter in the experiment?
What is the purpose of the hydrogencarbonate indicator in the experiment?
What is the purpose of the hydrogencarbonate indicator in the experiment?
What is the purpose of the limewater in the experiment?
What is the purpose of the limewater in the experiment?
What happens to the color of cobalt chloride paper when exposed to hot water?
What happens to the color of cobalt chloride paper when exposed to hot water?
According to the text, why are there no living things found on the Moon?
According to the text, why are there no living things found on the Moon?
What is air made up of?
What is air made up of?
What percentage of gases in air is nitrogen?
What percentage of gases in air is nitrogen?
What percentage of gases in air is carbon dioxide?
What percentage of gases in air is carbon dioxide?
What are the common gases found in air that can be tested?
What are the common gases found in air that can be tested?
What properties can be studied to test gases?
What properties can be studied to test gases?
What did the discovery of oxygen involve?
What did the discovery of oxygen involve?
What is the major difference between the Earth and the Moon?
What is the major difference between the Earth and the Moon?
What is the main reason why living things cannot survive on the Moon?
What is the main reason why living things cannot survive on the Moon?
What is the Earth surrounded by?
What is the Earth surrounded by?
Which gas is used to put out fires in fire extinguishers?
Which gas is used to put out fires in fire extinguishers?
Which gas is used in cutting metals in industry?
Which gas is used in cutting metals in industry?
What gas is used to create a fog effect on stages?
What gas is used to create a fog effect on stages?
Which gas is used in advertising lights?
Which gas is used in advertising lights?
What gas is used to fill balloons and airships?
What gas is used to fill balloons and airships?
What gas is used to fill light bulbs?
What gas is used to fill light bulbs?
What gas is used for storing living cells and tissues?
What gas is used for storing living cells and tissues?
What gas is used to fill some food packages to prevent spoilage?
What gas is used to fill some food packages to prevent spoilage?
What gas is denser than air and does not support burning?
What gas is denser than air and does not support burning?
What gas is used for breathing difficulties?
What gas is used for breathing difficulties?
