CHEM 121 EXAM 3 ACTUAL TEST PAPER QUESTIONS CORRECT ANSWERS GRADED A PLUS

CHEM 121 EXAM 3 ACTUAL TEST PAPER QUESTIONS CORRECT ANSWERS GRADED A
PLUS
CHEM 121 EXAM 3 Questions and Answers Verified
Solutions Latest Update 2026/2027

Question:
heat of fusion.

Answer:
amount of heat necessary to melt 1g of any solid substance



Question:
specific heat.

Answer:
amount of heat (in calories) needed to raise the temperature of 1g of a substance by 1C



Question:
specific gravity.

Answer:
density



Question:
volume.

Answer:
amount of space matter occupies



Question:
mass.

Answer:

,amount of matter something contains



Question:
weight.

Answer:
force of gravity on something



Question:
density.

Answer:
mass per unit volume of a substance - d=m/v



Question:
specific density.

Answer:
compares the density of a substance to that of water - water d=1g/1mL



Question:
specific gravity.

Answer:
same calculation as specific density w/o units - d=m/v



Question:
law of conservation of energy.

Answer:
energy cannot be created or destroyed; can only be transferred

, Question:
calorie.

Answer:
amount of heat needed to raise the temperature of 1g of liquid water by 1C-chemists tend to use kcal
where 1kcal=1000cal



Question:
specific heat.

Answer:
amount of heat needed to raise the temperature of any substance by 1C



Question:
physical properties.

Answer:
specific heat, density, and melting point



Question:
energy.

Answer:
capacity to do work



Question:
potential energy.

Answer:
stored energy that has the possibility of motion