1. The density of an object is the mass of a unit volume, usually one cubic centimeter, of the material of which the object is made. A solid piece of copper and a solid piece of aluminum have the same mass. If the density of copper is 8.9 grams/cm³ and the density of aluminum is 2.7 grams/cm³, which of the following statements is true:

a. Both objects will have the same volume.
b. The volume of the copper piece is larger than that of the aluminum piece.
c. The volume of the aluminum piece is larger than that of the copper piece.
d. Not enough information is provided in order to compare the two volumes.

Click Here for Answer

2. A solid object floats in water when it is:

a. light
b. heavy
c. more dense than water.
d. less dense than water

Click Here for Answer

3. Four solid objects are made from the same exact plastic material. The density of the plastic material is 0.95 grams/cm³. Object A weighs 0.5 lbs, object B weighs 1 lbs, object C weighs 10 lbs and object D weighs 1000 lbs. If density of water is 1.0 grams/cm³, which one of the following statements is true?

a. Only A & B will float
b. Only object A will float
c. All objects will float
d. All objects will sink.

Click Here for Answer

4. If one plots the mass vs. volume for a pure substance, i.e., water, which of the graphs below best represent the data?

Click Here for Answer