Matter Quiz Review

What is the percent by mass of oxygen in MgO?

• 20%
• 40%
• 50%
• 60%

What is the percent by mass of sodium in NaCl?

• 39%
• 61%
• 35%
• 65%

What is the percent by mass of fluorine in CaF₂ (gram-formula mass = 78 g/mol)?

• 24%
• 49%
• 51%
• 65%

Hydrochloric acid reacts with potassium hydroxide to produce a salt, water,and heat.

• Chemical Change
• Physical Change

Sodium Hydroxide dissolves in water

• Chemical Change
• Physical Change

A pellet of sodium is sliced in two

• Chemical change
• Physical Change

Iron rusts.

• Chemical change
• Physical Change

The state of matter that has no definite size or shape is

• Solid

• Liquid

• Gas

State of matter in which materials have a definite shape and volume.

• Solid state

• Liquid state

• Gas state

• Plasma state

• element
• compound
• mixture of elements
• mixture of compounds