KMT, Atomic Theory & Matter Unit Review

What is the atomic number?

• the number of protons in the nucleus

• the number of neutrons in the nucleus

• the number of protons and neutrons in the nucleus

• the number of protons in the energy levels

What is the mass number?

• the number of protons in the nucleus

• the number of neutrons in the nucleus

• the number of protons and neutrons in the nucleus

• the number of protons and electrons in the atom

What is the atomic number of this atom?

• 1

• 3

• 4

• 7

What subatomic particles would you find in the nucleus of an atom?

• Protons only

• Neutrons and Electrons

• Protons and Neutrons

• Protons and Electrons

An atom has 10 protons, 15 neutrons and 10 electrons what is its mass number.

• 10

• 20

• 25

• 35

What is the atomic number of the atom pictured?

• 9

• 8

• 18

• 19

Which of the following determines the identity of an element?

• number of protons

• number of neutrons

• atomic mass

• number of shells

A neutron has a charge of

• +2

• +1

• -1

• no charge

What are the three states of matter?

• Solid, Liquid, Air

• Rock, Water, Carbon Dioxide

• Solid, Liquid, Gas

• Paper, Juice, Methane

Adding heat to a solid makes the particles move...

• Particles in a solid are not moving

• Slower

• At the same rate as before the heat was applied

• Faster