Chemical Changes in Matter

In a Chemical Change there is always a Source of Energy, a Reactant which cause a New Substance.

• True

• False

What type of changes or processes cause matter to change into new substances?

• Physical

• Chemical

Identify the following process:  Bicycles when they move.

• Physical change
• Chemical change

Identify the following process: When we strike a match.

• Physical change
• Chemical change

Identify the following process: When we fry an egg.

• Physical change
• Chemical change

Identify the following process: When food comes into contact with air.

• Physical change
• Chemical change

A chemical reaction is a process in which one or more substances change into another or others which are different.

• TRUE

• FALSE

A physical change is a process in which one or more substances change into another or others which are different.

• TRUE
• FALSE

What is this ?

• a chemical reaction

• a physical process

What type of changes or processes cause the chemical composition of matter not to change?.. however, the shape or state may change.

• Physical

• Chemical