Quarter 1 Review

What is the atomic number of this atom?

• 2

• 4

• 6

• 8

How many valence electrons?

• 2

• 3

• 4

• 5

What is the atomic number of this element?

• 17

• 18

• 35

• 35.453

The sum of the number of protons and the number of neutrons is called the _____

• Atomic Number

• Atomic Mass

• Atomic Symbol

• Atomic Name

Atomic number represents which subatomic particle?

• electrons

• protons

• neutrons

How many electrons can the first energy level hold?

• 1

• 2

• 8

• Unlimited

How many electrons can the second and third (for our intents and purposes) energy levels hold?

• 1

• 2

• 8

• Unlimited

An atom is electrically neutral because

• the numbers of protons and neutrons are equal.

• the numbers of protons and electrons are equal.

• neutrons balance the protons and electrons.

The mass number is the total of the protons plus the neutrons in the atom.

• True

• False

Which subatomic particle has a negative charge?

• proton

• electron

• neutron

• quark