Atoms and Ions Quiz

What is the main difference between an atom and an ion?

• Atoms are always positively charged.

• Atoms are larger than ions.

• Atoms are neutral, ions have a charge.

• Atoms have a charge, ions do not.

Why are atoms considered neutral?

• They have more protons than electrons.

• They have more electrons than protons.

• They have no protons.

• The number of protons equals the number of electrons.

What happens to the charge of an ion when it gains electrons?

• It becomes more positive.

• It becomes more negative.

• It loses its charge.

• It remains neutral.

How can you identify an ion from its symbolic notation?

• It is always written in lowercase.

• It has a different color.

• It has a charge indicated in the top right.

• It has no symbol.

What remains unchanged when an ion is formed?

• The atomic mass.

• The number of protons.

• The number of electrons.

• The overall charge.