Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
10 Chemistry: Matter and Change
Solving Problems: A Chemistry Handbook
SOLVING PROBLEMS:
A CHEMISTRY HANDBOOK
CHAPTER
2
8. A sample of metal has a mass of 34.65 g. When placed in a
graduated cylinder containing water, the water level rises
3.3 mL. Which of the following metals is the sample made
from: silver, which has a density of 10.5 g/cm 3 ; tin, which has
a density of 7.28 g/cm 3 ; or titanium, which has a density of
4.5 g/cm 3 ?
9. Rock salt has a density of 2.18 g/cm 3 . What would the volume
be of a 4.8-g sample of rock salt?
10. A piece of lead displaces 1.5 mL of water in a graduated
cylinder. Lead has a density of 11.34 g/cm 3 . What is the mass
of the piece of lead?
Temperature The temperature of an object describes how hot
or cold the object is relative to other objects. Scientists use two temperature scales—the Celsius scale and the Kelvin scale—to measure
temperature. You will be using the Celsius scale in most of your
experiments. On the Celsius scale, the freezing point of water is
defined as 0 degrees and the boiling point of water is defined as
100 degrees.
A kelvin is the SI base unit of temperature. On the Kelvin scale,
water freezes at about 273 K and boils at about 373 K. One kelvin is
equal in size to one degree on the Celsius scale. To convert from
degrees Celsius to kelvins, add 273 to the Celsius measurement.
To convert from kelvins to degrees Celsius, subtract 273 from the
measurement in kelvins.
Practice Problems
11. Convert each temperature reported in degrees Celsius to
kelvins.
a. 54°C
b. Ϫ54°C
c. 15°C
12. Convert each temperature reported in kelvins to degrees
Celsius.
a. 32 K
b. 0 K
c. 281 K
▲
10 Chemistry: Matter and Change
Solving Problems: A Chemistry Handbook
SOLVING PROBLEMS:
A CHEMISTRY HANDBOOK
CHAPTER
2
8. A sample of metal has a mass of 34.65 g. When placed in a
graduated cylinder containing water, the water level rises
3.3 mL. Which of the following metals is the sample made
from: silver, which has a density of 10.5 g/cm 3 ; tin, which has
a density of 7.28 g/cm 3 ; or titanium, which has a density of
4.5 g/cm 3 ?
9. Rock salt has a density of 2.18 g/cm 3 . What would the volume
be of a 4.8-g sample of rock salt?
10. A piece of lead displaces 1.5 mL of water in a graduated
cylinder. Lead has a density of 11.34 g/cm 3 . What is the mass
of the piece of lead?
Temperature The temperature of an object describes how hot
or cold the object is relative to other objects. Scientists use two temperature scales—the Celsius scale and the Kelvin scale—to measure
temperature. You will be using the Celsius scale in most of your
experiments. On the Celsius scale, the freezing point of water is
defined as 0 degrees and the boiling point of water is defined as
100 degrees.
A kelvin is the SI base unit of temperature. On the Kelvin scale,
water freezes at about 273 K and boils at about 373 K. One kelvin is
equal in size to one degree on the Celsius scale. To convert from
degrees Celsius to kelvins, add 273 to the Celsius measurement.
To convert from kelvins to degrees Celsius, subtract 273 from the
measurement in kelvins.
Practice Problems
11. Convert each temperature reported in degrees Celsius to
kelvins.
a. 54°C
b. Ϫ54°C
c. 15°C
12. Convert each temperature reported in kelvins to degrees
Celsius.
a. 32 K
b. 0 K
c. 281 K
▲