Components of Air

Air is made up of a number of gases. Name the gas found in air that is useful for the process of respiration.

• nitrogen

• oxygen

• water vapor

• carbon dioxide

Nitrogen is a gas found in air. What percentage of the air is made up of nitrogen?

• 78 %

• 21%

• 0.04%

• 0.06%

Which property of air is demonstrated by the following diagram?

• Air takes up space

• Air exerts pressure

• Air has mass

A colorless and odorless gas is captured and contained in a test tube. Which item or items is used to test this unknown gas for oxygen?

• a cup, water and a piece of cardboard

• marble chips and hydrochloric acid

• a glass straw and lime water

• a glowing splint

Which number shows decomposition?

• 1

• 2

• 5

• 6

Which process removes carbon dioxide out of the air?

• combustion

• decomposition

• photosynthesis

• respiration

Which of the choices below are uses of nitrogen?

• moisture

• produces protein

• photosynthesis

• fertilizers

Which gas DOES NOT support combustion?

• nitrogen

• oxygen

• carbon dioxide

• water vapor

Carbon dioxide is a:

• compound

• element

• mixture

• molecule

Tags

NGSS.MS-PS1-1

Which is a use of carbon dioxide

• used in respiration

• used for life support

• used in fire extinguishers

• used to make fertilizers