Chemistry Review: Investigations 1-3

Front

How can we identify an unknown substance?

Back

By examining the substance's physical and chemical properties.

Front

When gas particles are forced more closely together, we say they have been _____________.

Back

Compressed.

Front

A phase of matter that has definite volume but no definite shape. Particles are loosely bonded and can flow over and around one another.

Back

Liquid.

Front

Sodium bicarbonate is baking soda's ____________ _____________.

Back

Chemical name.

Front

H is the _____________ _____________ for hydrogen.

Back

Element symbol.

Front

What is the definition of a chemical property?

Back

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

Front

What is the definition of a physical property?

Back

A characteristic of a substance that can be observed without changing its chemical composition.

Front

What is the difference between a solid and a liquid?

Back

A solid has a definite shape and volume, while a liquid has a definite volume but takes the shape of its container.

Front

What is the chemical formula for water?

Back

H2O.

Front

What happens to the particles in a gas when it is heated?

Back

They move faster and spread apart.