Protons, Neutrons, and Electrons

Front

What is the charge of a proton?

Back

Positively charged.

Front

What is the charge of an electron?

Back

Negatively charged.

Front

What is the charge of a neutron?

Back

Neutral (no charge).

Front

What is the nucleus of an atom?

Back

The tiny, dense, positively charged center of an atom that contains protons and neutrons.

Front

How do you calculate the number of neutrons in an atom?

Back

Mass Number - Atomic Number.

Front

What is the mass number of an atom?

Back

The total number of protons and neutrons in the nucleus.

Front

What is an atomic number?

Back

The number of protons in the nucleus of an atom, which determines the element.

Front

What is the role of electrons in an atom?

Back

Electrons are negatively charged particles that orbit the nucleus and are involved in chemical bonding.

Front

What is the difference between atomic mass and mass number?

Back

Atomic mass is the weighted average mass of an element's isotopes, while mass number is the total number of protons and neutrons.

Front

What is an isotope?

Back

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