Atoms, Bonds, Reactions Practice

The Atomic Number of an element determines the number of which subatomic particle?

• Proton

• Neutron

• Electron

• Quark

How many neutrons does Sodium, Na, have?

• 11

• 12

• 23

• 1

This element has an atomic mass of 12?

• Carbon

• Sodium

• Magnesium

• Cesium

• Potassium

Protons have a __________charge.

• positive

• negative

• neutral

• partial

How many protons does Al have?

• 5

• 6

• 13

• 27

Select all the statements below which are true about an atom.

• Protons have a positive charge while electrons have a negative charge.

• Neutrons are neutral which means they don't have a charge.

• The total number of protons and neutrons determines the atom's identity (element).

• Neutral atoms have a balanced charge which means the number of neutrons and protons are equal.

• An atom is the smallest form of an element and is composed of three subatomic particles: protons, neutrons, and electrons.

The lon charge is determined by either adding or removing which subatomic particle(s)?

• Proton

• Neutron

• Electron

• Quark

The ONLY way to make an atom with a positive charge (also called a cation) is to remove electron(s).

• TRUE

• FALSE

This element usually has no neutrons

• He

• Pb

• H

• Ar

An ion has:

• no charge

• more protons than neutrons

• a positive or negative charge

• more neutrons than protons