Changes in Matter - Chemistry

How many states of matter are there?

• 2

• 3

• 4

• 5

Match the following

• The by which a substance burns in oxygen

• products

• ingredients that are used in a reaction

• combustion

• converts solid to gas

• sublimation

• reddish orange chemical reaction

• rusting

• substances that are formed in a reaction

• reactants

Which of the following is a property of matter?

• Matter has no mass.

• Matter occupies no space.

• Matter has mass

• Matter is invisible

Ice is a

• fluid

• gas

• solid

• liquid

Burning of fire crackers

• releases heat only

• absorbs heat

• releases heat and light

• absorbs light

Conversion of water into water vapor is called

• condensation

• evaporation

• sublimation

• filtration

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

• solidification

• freezing

• evaporation

• condensation

The process of photosynthesis is a physical change.

• True

• False

Souring of milk is a physical change

• True

• False

Tearing of paper into several pieces

• physical

• chemical