Physical Science Final Exam

The particles of a gas are packed tightly together.

• True

• False

• Neither

• I don't know

What is it called when a solid changes directly into a gas?

• Liquid

• Plasma

• Sublimation

• Cheese Pizza

What is the equation to find density?

• Density = volume

• y=mx+b

• pie^2

• p=m/V

What is the atomic number of O?

• 8

• 15.999

• 16

• 0

what is the atomic mass of O?

how many protons does

O have?

• 8

• 15.999

• 16

some atoms do not have a charge because

• number of neutrons

• the same number of electrons and protons

• the same number of neutron and electrons

What is the charge of electrons?

• -2

• 1

• -5

• -1

Protons have a charge of

• -1

• +1

• +3

• 6

What is a product

• the middle

• the beging

• the end of an equation