CHM 113 EXAM PREP QUESTIONS ANSWERS STUDY GUIDE VERIFIED SOLUTION
CHM 113 EXAM Script 2026/2027 Questions and
Answers Verified Solutions Latest Update
Question:
Specific Gravity.
Answer:
the ratio of the density of the substance to the density of water
Question:
Intensive Property.
Answer:
physical property not dependent on the size of the sample
Question:
Extensive Property.
Answer:
depends on the size of the sample
Question:
For a piece of wood having: Length = 10.35 cm Width = 6.42 cm Height = 1.90 cm Mass = 72.412 g
Calculate the density.
Answer:
d = m/v d = (72.412)/(10.35*6.45*1.90) d = 0.571 g/cm^3
Question:
A cylinder has: diameter = 1.28 cm height = 3.85 cm mass = 39.730 g What is its density?
,Answer:
d = 39.730/4.954 d = 8.019 g/cm^3
Question:
A rock weighs: 143 g in air 82 g in H2O mass displaced? volume H2O displaced? density?
Answer:
V = 61g/cm^3 1. 61g 2. 61g 3. 143/61 = 2.344 g/cm^3
Question:
A graduated cylinder weighs 28.102 g. A solution has been created which levitates a piece of PVC.
The graduated cylinder containing 6.25 mL of that solution weighs 34.200 g. Density?
Answer:
d = (34.200 - 28.102)/6.25
Question:
Increasing denisty.
Answer:
1 - gas 2 - liquid 3 - solid
Question:
Increasing density of H2O.
Answer:
1 - gas 2 - solid 3 - liquid
Question:
If an object has a density of 0.5g/mL, will it float or sink when placed in water? Why?
Answer:
, It will float in water because it is less dense than water which has a density of 1g/mL
Question:
A rock has a mass of 20g in air, and 10g in water. Density of the rock?
Answer:
d = 20/10 d = 2g/cm^3
Question:
If a 10 mL solution with a density of 1.5g/mL levitates a 1 g piece PVC, what is the density of the
PVC?
Answer:
density of PVC = density of solution
Question:
A cylinder has a diameter of 1.6mm, a height of 2 cm and a mass of 50 g. Density?
Answer:
d = 50/0.0402 d = 1243.78 g/cm^3
Question:
Units of density.
Answer:
g/cm^3 or g/mL
Question:
Why do things have a high density and others have a low density?
Answer:
It depends on how atoms are arranged in a space and the temperature of the substance.
CHM 113 EXAM Script 2026/2027 Questions and
Answers Verified Solutions Latest Update
Question:
Specific Gravity.
Answer:
the ratio of the density of the substance to the density of water
Question:
Intensive Property.
Answer:
physical property not dependent on the size of the sample
Question:
Extensive Property.
Answer:
depends on the size of the sample
Question:
For a piece of wood having: Length = 10.35 cm Width = 6.42 cm Height = 1.90 cm Mass = 72.412 g
Calculate the density.
Answer:
d = m/v d = (72.412)/(10.35*6.45*1.90) d = 0.571 g/cm^3
Question:
A cylinder has: diameter = 1.28 cm height = 3.85 cm mass = 39.730 g What is its density?
,Answer:
d = 39.730/4.954 d = 8.019 g/cm^3
Question:
A rock weighs: 143 g in air 82 g in H2O mass displaced? volume H2O displaced? density?
Answer:
V = 61g/cm^3 1. 61g 2. 61g 3. 143/61 = 2.344 g/cm^3
Question:
A graduated cylinder weighs 28.102 g. A solution has been created which levitates a piece of PVC.
The graduated cylinder containing 6.25 mL of that solution weighs 34.200 g. Density?
Answer:
d = (34.200 - 28.102)/6.25
Question:
Increasing denisty.
Answer:
1 - gas 2 - liquid 3 - solid
Question:
Increasing density of H2O.
Answer:
1 - gas 2 - solid 3 - liquid
Question:
If an object has a density of 0.5g/mL, will it float or sink when placed in water? Why?
Answer:
, It will float in water because it is less dense than water which has a density of 1g/mL
Question:
A rock has a mass of 20g in air, and 10g in water. Density of the rock?
Answer:
d = 20/10 d = 2g/cm^3
Question:
If a 10 mL solution with a density of 1.5g/mL levitates a 1 g piece PVC, what is the density of the
PVC?
Answer:
density of PVC = density of solution
Question:
A cylinder has a diameter of 1.6mm, a height of 2 cm and a mass of 50 g. Density?
Answer:
d = 50/0.0402 d = 1243.78 g/cm^3
Question:
Units of density.
Answer:
g/cm^3 or g/mL
Question:
Why do things have a high density and others have a low density?
Answer:
It depends on how atoms are arranged in a space and the temperature of the substance.
