Identifying Chemical Change Read About It

What is a chemical change?

• A change in matter that produces one or more new substances

• A change in matter that does not produce new substances

• A change in the state of matter

• A change in the size of matter

Which of the following is NOT a sign of a chemical change?

• Change in color

• Production of gas

• Change in shape

• Formation of a precipitate

What happens to bread when it is toasted?

• It undergoes a physical change

• It undergoes a chemical change

• It remains the same

• It only changes in temperature

Rust is formed when iron reacts with ___.

When two liquids are combined and a solid forms, what is this solid called?

• Precipitate

• Solvent

• Solution

• Mixture

What evidence indicates a chemical change when sugar is heated in a pan?

• It melts

• It changes color

• It dissolves

• It evaporates

A chemical ice pack becomes cold due to a chemical change. What is this an example of?

• Change in thermal energy

• Production of gas

• Formation of a precipitate

• Change in color