Unit #3 Flashcard #1

Front

What type of property is the ability to rust?

Back

Chemical property

Front

What are properties that can be observed without changing the identity of the substance?

Back

Physical properties

Front

What is an example of a physical change?

Back

Ice melting

Front

Which state of matter has molecules that move fastest and spread to fill the space they are in?

Back

Gas

Front

What is NOT an example of a physical change?

Back

Sour milk

Front

Define a chemical property.

Back

A characteristic of a substance that can only be observed during a chemical reaction.

Front

What is the difference between physical and chemical changes?

Back

Physical changes do not alter the chemical composition of a substance, while chemical changes do.

Front

What happens to the molecules in a solid when it melts?

Back

They gain energy and begin to move more freely.

Front

What is the state of matter where molecules are tightly packed and vibrate in place?

Back

Solid

Front

What is an example of a chemical change?

Back

Burning wood