Chapter 2 – Review
2.1 Measurements
- Is one liter about an ounce, a pint, a quart, or a gallon?
- Is a meter about an inch, a foot, a yard, or a mile?
Check answers: [1] - Indicate the SI base units or derived units that are appropriate for the following measurements:
- the length of a marathon race (26 miles 385 yards)
- the mass of an automobile
- the volume of a swimming pool
- the speed of an airplane
- the density of gold
- the area of a football field
- the maximum temperature at the South Pole on April 1, 1913
- Indicate the SI base units or derived units that are appropriate for the following measurements:
- the mass of the moon
- the distance from Dallas to Oklahoma City
- the speed of sound
- the density of air
- the temperature at which alcohol boils
- the area of the state of Delaware
- the volume of a flu shot or a measles vaccination
Check answers: [2]
-
Give the name and symbol of the prefixes used with SI units to indicate multiplication by the following exact quantities.
-
103
-
10−2
-
0.1
-
10−3
-
1,000,000
-
0.000001
-
-
Give the name of the prefix and the quantity indicated by the following symbols that are used with SI base units.
-
c
-
d
-
G
-
k
-
m
-
n
-
p
-
T
Check answers: [3]
-
-
A large piece of jewelry has a mass of 132.6 g. A graduated cylinder initially contains 48.6 mL water. When the jewelry is submerged in the graduated cylinder, the total volume increases to 61.2 mL.
- Determine the density of this piece of jewelry.
- Assuming that the jewelry is made from only one substance, what substance is it likely to be? Explain.
-
Visit this density simulation and click the “turn fluid into water” button to adjust the density of liquid in the beaker to 1.00 g/mL.
- Use the water displacement approach to measure the mass and volume of the unknown material (select the green block with question marks).
- Use the measured mass and volume data from step (a) to calculate the density of the unknown material.
- Link out to the link provided.
-
Assuming this material is a copper-containing gemstone, identify its three most likely identities by comparing the measured density to the values tabulated in this gemstone density guide.
- How are mass and density related for blocks of the same volume?
Check answers: [4]
- Visit this density simulation and click the “reset” button to ensure all simulator parameters are at their default values.
- Use the water displacement approach to measure the mass and volume of the red block.
- Use the measured mass and volume data from step (a) to calculate the density of the red block.
- Use the vertical green slide control to adjust the fluid density to values well above, then well below, and finally nearly equal to the density of the red block, reporting your observations.
- Visit this density simulation and click the “turn fluid into water” button to adjust the density of liquid in the beaker to 1.00 g/mL. Change the block material to foam, and then wait patiently until the foam block stops bobbing