6.5 Matter Unit Test Review

Front

A change in matter that produces a new substance is —

Back

chemical change

Front

How many atoms of hydrogen are in C2H4O2 (acetic acid)?

Back

4

Front

Two or more elements chemically combine together to form —

Back

compound

Front

The periodic table is arranged —

Back

by the atomic number

Front

The basic building block of all matter is —

Back

atom

Front

What is a physical change?

Back

A change that does not produce a new substance, such as melting or boiling.

Front

What is a chemical compound?

Back

A substance formed when two or more elements chemically bond together.

Front

What is the atomic number?

Back

The number of protons in the nucleus of an atom, which determines the element's identity.

Front

What is a mixture?

Back

A combination of two or more substances that are not chemically bonded.

Front

What is an element?

Back

A pure substance that cannot be broken down into simpler substances by chemical means.