IS_Section Quiz_7.1-7.2_e

Noble gases take up the largest portion of the gases in air.

• True

• False

Water turns dry cobalt chloride paper from pink to blue.

• True

• False

Energy needed for photosynthesis comes from light.

• True

• False

Both carbon dioxide and oxygen are produced during photosynthesis.

• True

• False

Photosynthesis is important in providing food for living things.

• True

• False

The amount of water vapour in air varies from day to day.

• True

• False

There is no simple test for nitrogen because nitrogen is very reactive.

• True

• False

Hydrogencarbonate indicator appears red in a test tube of carbon dioxide.

• True

• False

During photosynthesis, plants change light energy to chemical energy.

• True

• False

The chlorophyll in plants absorbs light energy during photosynthesis.

• True

• False