Quick assessment-Grade 7

Give one example of chemical change.

All forms of matter are made up of tiny____ and ____.

• atoms

• molecules

Name three ingredients of which a bath bomb is made off.

Which gas is responsible for bubble formation?

• Carbon dioxide

• Oxygen

• Nitrogen

What is the other name for baking soda?

• Sodium bicarbonate

• Potassium bicarbonate

Cornstarch in a bath bomb acts as a dry filler.

• True

• False

The reaction between citric acid and baking soda in a bath bomb is called:

• Photosynthesis

• Neutralization

• Combustion

• Respiration

Chemical change forms a new substance.

• True

• False