Types of Physical and Chemical Changes

What type of change occurs when Mentos are dropped into Diet Coke?

• Physical

• Chemical

• Both

• Neither

Which statement best describes a physical change?

• A new substance is created

• Electrons are exchanged

• Matter changes forms but not chemical identity

• There is always an explosion

What happens during a chemical change?

• Matter changes shape

• Electrons are exchanged and a new substance is created

• Only the size of matter changes

• Matter changes from solid to liquid

Which of the following is an indicator of a chemical change?

• Change in size

• Change in shape

• Change in temperature

• Change in phase

Breaking a piggy bank with a hammer is an example of what type of change?

• Chemical change

• Nuclear change

• Physical change

• Biological change

When fireworks explode, what type of change is occurring?

• Physical change

• Phase change

• Chemical change

• Size change

When hydrogen gas is ignited, causing an explosion and temperature change, what kind of change is it?

• Physical

• Phase

• Chemical

• Mechanical

Cutting hair is an example of what type of change?

• Chemical

• Physical

• Both chemical and physical

• Neither chemical nor physical

When ice melts into water, what type of change occurs?

• Chemical

• Nuclear

• Physical

• Biological

Dissolving sugar in coffee is considered what type of change?

• Chemical

• Irreversible

• Physical

• Explosive