Atoms Vocabulary

Front

What is the smallest unit of matter?

Back

atom

Front

Which subatomic particle has a NEGATIVE charge?

Back

electron

Front

What is a substance that cannot be broken down into simpler substances by chemical means?

Back

element

Front

Where are protons and neutrons found in an atom?

Back

nucleus

Front

What is the center of an atom called?

Back

nucleus

Front

What are the three main subatomic particles?

Back

protons, neutrons, electrons

Front

What charge do protons have?

Back

positive charge

Front

What charge do neutrons have?

Back

no charge (neutral)

Front

What charge do electrons have?

Back

negative charge

Front

What is the region around the nucleus where electrons are likely to be found?

Back

electron cloud