Chemistry Unit Test

Front

The air we breathe is a _________.

Back

mixture

Front

Name the element that is essential for life and has the symbol 'C'.

Back

Carbon

Front

Found in the nucleus of an atom. This particle has a positive charge. What is it?

Back

Proton

Front

True or False: Atoms are most stable when their outer shell is complete.

Back

True

Front

Which is an example of a physical property?

Back

Color

Front

What is the smallest unit of an element that retains the properties of that element?

Back

Atom

Front

What is a substance made of two or more elements that are chemically combined?

Back

Compound

Front

What is the term for a change that does not alter the chemical composition of a substance?

Back

Physical change

Front

What is the term for a change that results in the formation of new chemical substances?

Back

Chemical change

Front

What is the negatively charged particle found in an atom?

Back

Electron