Front

What kind of bond forms when atoms share electrons?

Back

Covalent bond: A type of chemical bond where two atoms share one or more pairs of electrons.

Front

Which region of an atom has a negative charge?

Back

The electron cloud: The area surrounding the nucleus of an atom where electrons are likely to be found.

Front

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

Back

Atomic number: The number of protons in the nucleus of an atom, which determines the element's identity.

Front

What are anions?

Back

Anions: Negatively charged ions that gain electrons.

Front

If an atom has 9 protons, what can we conclude about it?

Back

It cannot be an atom of oxygen: Oxygen has 8 protons, so an atom with 9 protons is a different element.

Front

What is the charge of a proton?

Back

Positive charge: Protons carry a positive electrical charge.

Front

What is the charge of a neutron?

Back

Neutral charge: Neutrons have no electrical charge.

Front

What is the charge of an electron?

Back

Negative charge: Electrons carry a negative electrical charge.

Front

What is an isotope?

Back

Isotope: Atoms of the same element that have the same number of protons but different numbers of neutrons.

Front

What is the atomic mass?

Back

Atomic mass: The weighted average mass of an atom's isotopes, measured in atomic mass units (amu).