Unit 1 Review

Anything that occupies space and has mass is known as

• liquid
• air
• matter
• solid

Atoms always have the same form.

• True

• False

All matter is made up of .....

• Compounds
• Atoms
• Molecules
• Sunshine

Jack has a rock. The rock has a mass of 14g and a volume of 2cm³. What is the density of the rock?

• 7 mL

• 7 g/cm³

• 28 g/cm³

• 1/7 g/cm³

If an object has a density of .6 g/mL and you put it into water, will it sink or float?  

• sink
• float

What units are used to measure mass?

• g
• cm³
• g/cm³
• cm³/g

Which subatomic particles are found in the nucleus of an atom?

• Protons and Electrons
• Protons and Neutrons
• Neutrons and Electrons
• Protons, Neutrons and Electrons

What electrical charge does a proton have?

• +1
• 0
• -1
• +2

What mass does a neutron have?

• 1 amu

• 0 amu

• -1 amu

• +2 amu

How many electrons does a sodium atom have?

• 23

• 11

• 12

• 34