Front

What is the smallest particle of an element that can still be recognized as that element?

Back

Atom

Front

What is the center of an atom called, which contains the protons and neutrons?

Back

Nucleus

Front

What are the positively charged particles in the nucleus of an atom called?

Back

Protons

Front

Which particles in the nucleus have no charge?

Back

Neutrons

Front

What is the term for the number of protons and neutrons in an atom?

Back

Atomic mass

Front

What are the negatively charged particles found outside the nucleus of an atom?

Back

Electrons

Front

What is the space that represents the average distance of the electrons from the nucleus of an atom called?

Back

Shell

Front

What is the number of protons in the nucleus of an atom called?

Back

Atomic number

Front

What theory states that all matter is composed of tiny particles called atoms?

Back

Atomic theory

Front

What are the abbreviations for the names of the elements called?

Back

Chemical symbols