Energy & Temperature
Identify the following as kinetic or potential energy:
a. kicking a ball
b. a skier at the top of a hill
What is...
a. kinetic energy
b. potential energy
A glucose solution has a density of 1.02 g/mL. Find the specific gravity of the solution.
What is 1.02?
10
Put this in scientific notation and state the number of sig figs.
What is 1 x 10^1
1 sig fig
Color
What is a physical property?
1 m = _____ cm
What is 100 cm?
37.0 oC = _______ oF
What is 98.6 oF?
A dessert contains 137.25 g of vanilla ice cream, 84 g of fudge sauce, and 43.7 g of nuts.
a. what is the total mass, in grams, of the dessert?
b. what is the total mass, in pounds, of the dessert?
What is...
a. 265 g
b. 0.584 lb
.002310
Put this in scientific notation and state the number of sig figs.
What is 2.310 x 10^-3
4 sig figs
Rusting
What is a chemical property?
Measured or exact?
0.107 L
4 knives
What is...
measured
exact
Convert to the following energy units:
a. 3500 cal to kcal
b. 4.5 kJ to cal
What is...
a. 3.5 kcal
b. 1100 cal
LDL is sometimes called "bad cholesterol," is also measured in a routine blood test. If a 0.380 g sample of LDL has a volume of 0.362 mL, what is the density, in grams per milliliter, of the LDL sample?
What is 1.05 g/mL
7.56 x 10^4
What is this not in scientific notation and how may sig figs?
What is 75600
3 sig figs
Burning wood
What is a chemical change?
Identify the measured and/or exact parts...
1 L=1.06 qt
What is...
1 L is exact number
1.06 qt is measured number
In the process of making ice cream, rock salt is added to crushed ice to chill the ice cream mixture. If the temperature drops to -11oC, what is it in degrees Fahrenheit? In Kelvin?
What is 12oF
262 K
Butter has a specific gravity of 0.86. What is the mass, in grams, of 2.15 L of butter?
What is 1800g
67.89 + 8565.6
Solve this, place it in scientific notation, and state the number of sig figs
What is... 8633.5
8.6335 x 103
5 sig figs
Condensing water vapor
What is a physical change?
You have used 250 L of distilled water for a dialysis patient. How many gallons of water is that?
What is 66 gal?
For dinner, Charles had one cup of clam chowder, which contains 16 g of carbohydrates, 12 g of fat, and 9 g of protein. How much energy, in kilocalories and kilojoules, is in the clam chowder?
What is...
210 kcal
880 kJ
A mouthwash is 21.6% ethanol by mass. If each bottle contains 0.358 pt of mouthwash with a density of 0.876 g/mL, how many grams of ethanol are in 180 bottles of the mouthwash?
26,700 g
321.75 x .347
Solve this, place it in scientific notation, and state the number of sig figs.
What is 112
1.12 x 102
3 sig figs
Maintains its own volume but takes the shape of its container.
What is a liquid?
Steve has been diagnosed with diminished thyroid function. His doctor prescribes a dosage of 0.150 mg of Synthroid to be taken once a day. If tablets in stock contain 75 mcg of Synthroid, how many tablets are required to provide the prescribed medication?
What is...
2 tablets.