PS Chapter 14 Vocabulary-The Atom

Front

What is a fundamental property of matter that can be either positive or negative?

Back

Electric charge

Front

What is one of the discrete allowed energies for electrons in an atom?

Back

Energy level

Front

What is the number of protons plus the number of neutrons in the nucleus?

Back

Mass number

Front

What is a particle with an electric charge found inside atoms but outside the nucleus?

Back

Electron

Front

What theory describes matter and energy at very small atomic masses?

Back

Quantum theory

Front

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

Back

Atom

Front

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

Back

Nucleus

Front

What is the positively charged particle found in the nucleus of an atom?

Back

Proton

Front

What is the neutral particle found in the nucleus of an atom?

Back

Neutron

Front

What is the negatively charged particle that orbits the nucleus of an atom?

Back

Electron