Unit 3 Changes in Matter iTeachly Chem Test 23-24

How many main states of matter are there?

• 2

• 3

• 4

• 5

Which of the following is a property of matter?

• Matter has no mass.

• Matter occupies no space.

• Matter has mass.

• Matter is invisible

Conversion of water into water vapor is called _______________.

• condensation

• evaporation

• sublimation

• filtration

In which of the following reactions, is a new substance is formed?

• Sugar crystals are dissolved in hot water.

• Boiling of water and formation of steam.

• Cutting of an apple into two pieces.

• Burning of wood and formation of ash and fumes.

Water converts into steam in the presence of heat. This process is called ________________________.

• solidification

• freezing

• evaporation

• condensation

During a chemical change only the appearance of the substance changes.

• True

• False

Rusting of a nail

• Chemical change

• Physical change

Baking bread

• Chemical change

• Physical change

Making orange juice

• Chemical change

• Physical change

_________ are ingredients of a chemical reaction.

• Reactants

• Products

• Reagents

• Enzymes