Lab-Aids Review Chemistry of Materials 1-6

Front

What method is used to find the volume of an irregularly shaped object?

Back

Use a graduated cylinder and measure water displacement.

Front

What can be concluded about a powder that dissolves in water but does not react with acid?

Back

It is soluble and chemically unreactive with acid.

Front

How do you calculate density?

Back

Density = Mass / Volume.

Front

What is the density of a block with a mass of 200 g and a volume of 50 cm^3?

Back

4 g/cm^3.

Front

What is the smallest unit of an element?

Back

Atom.

Front

What is the difference between physical and chemical properties?

Back

Chemical properties describe how a substance reacts with other substances, while physical properties can be observed without changing the substance.

Front

What is a physical property?

Back

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

Front

What is a chemical property?

Back

A characteristic that describes how a substance interacts with other substances.

Front

What is an example of a physical change?

Back

Melting ice.

Front

What is an example of a chemical change?

Back

Rusting of iron.