Central nucleus surrounded by electrons

Central nucleus surrounded by protons

Central nucleus surrounded by neutrons

Central nucleus surrounded by positrons

Located in the center of the atom, holds the atom's mass, and is positively charged.

Located in the center of the atom, does not hold the atom's mass and is negatively charged

Located in the center of the atom, holds the atom's mass, and has no charge

Located in the center of the atom, does not hold the atom's mass, and is positively charged.

Protons and electrons

Neutrons and electrons

Neutrons and positrons

Protons and neutrons

Protons are heavier than neutrons

Protons and neutrons have no mass

Protons and neutrons have the same mass

Neutrons are heavier than protons

Positive

Negative

Variable

Neutral

Variable

Neutral

Negative

Positive

Positive

Negative

Neutral

Variable

It becomes a molecule

It becomes a compound

It becomes a mixture

It becomes an ion

Number of shells

Number of electrons

Number of protons inside the nucleus

Number of neutrons

Number of shells

Number of protons inside the nucleus

Number of electrons and protons of an atom

Number of neutrons and protons inside the nucleus

6

7

9

8