Chemistry and Matter

Front

What happens if an atom is unstable?

Back

An unstable atom will gain, lose, or share electrons.

Front

What are electrons on the outermost energy level of an atom called?

Back

Valence electrons.

Front

What is a subatomic particle that has a negative charge and is found outside the nucleus?

Back

Electron.

Front

Why does an atom gain an electron?

Back

An atom gains an electron to fill its current energy level.

Front

What is a subatomic particle that has no charge and is found in the nucleus of an atom?

Back

Neutron.

Front

What is the center of an atom called?

Back

Nucleus.

Front

What is the positively charged subatomic particle in an atom?

Back

Proton.

Front

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

Back

Atomic number.

Front

What do you call the energy levels where electrons are found?

Back

Electron shells or energy levels.

Front

What is the term for atoms of the same element with different numbers of neutrons?

Back

Isotopes.