Physical Science Review 2

When a log burns in a fire _____.

• a physical change has occurred
• mass is gained
• energy is created
• new substances are formed

Solubility, the ability for a substance to dissolve in another substance, is a ____.

• chemical change
• chemical property
• physical change 
• physical property

What is a measure of the average kinetic energy of a substance?

• mass 
• volume 
• density 
• temperature 

The tendency of a moving object to continue in a straight line or a stationary object to remain in place is ___.

• accleration
• friction
• inertia
• gravity

The process of going from a gas to a liquid is called what?

• evaporation
• sublimation
• condensation
• boiling

Is spoiling food a physical or chemical change?

• physical
• chemical
• neither
• both

The picture shows a large box being pushed by two men.  The box did not change its position in the room because ___.

• The opposing forces were balanced
• The smooth floor created no friction
• The man on the left side applied more force than the man on the right side.
• The man on the right side applied more force than the man on the left side.

A beaker containing a solution of 10 grams of salt and 50 mL of water is placed on a hot plate and heated to its boiling point. How much salt will remain in the beaker after all of the water has boiled?

• 60 grams
• 10 grams
• 50 grams
• 0 grams

Which of the following statements is true of electromagnetic waves?

• They require a medium to through which to travel
• Sound waves are an example
• They do not require a medium to travel through
• They are all invisible to the human eye

An example of a chemical property is ____. 

• Flammability 
• Boiling point
• Mass
• Density