Changes that Materials Undergo when Exposed to Temperatures

What is the main source of heat?

• fire

• sun

• body

• wood

What are the three basic states of matter?

• solid, liquid, and gas

• water, air, and land

• fire, air, and light

• solid, liquid, and powder

What is the degree of hotness or coldness of an object?

• elasticity

• hardness

• brittleness

• temperature

What kind of change took place when a new substance is formed?

• practical

• physical

• chemical

• radical

What kind of change took place when a material just changed its phase when heated or cooled?

• practical

• physical

• chemical

• radical

What process is involved in the changing of solid to liquid?

• solidification

• melting

• vaporization

• condensation

When you boiled water in a pot and some of the water became water vapor, what process took place?

• solidification

• melting

• vaporization

• condensation

What should you do with the solidified oil to change it back to its liquid form?

• heat it

• put it in a freezer

• shake it

• it cannot be changed back to liquid

You did not put the ice cream back to the fridge. What do you think will happen?

• the ice cream will harden

• the ice cream will become cake

• the ice cream will melt

• nothing will change

What process will turn the water into ice? It is also called freezing

• solidification

• melting

• vaporization

• condensation