Test 1 – Chemistry Flashcard

How many significant figures are in the following number:
502,000
3
How many significant figures are in the following number:
5.00
3
How many significant figures are in the following number:
300
1
How many significant figures are in the following number:
1.01 x 10^5
3
How many significant figures are in the following number:
0.00020
2
Round the answer to the correct sig figs:

2.00 + 3.2 + 50 = _____

60 (you can only round to the tens place because of the number 50)
Round the answer to the correct sig figs:

5.0 + 6.39 + 0.61 =______

12.0 (you must show sig figs to the tenths place because of the number 5.0)
Round the answer to the correct sig figs:

5.00 x 0.02 x 101 =______

10 (you can only have 1 sig fig because of the number 0.02)
Round the answer to the correct sig figs:

(6.10 x 10^2)/(2.0) = ________

310 (answer can only have 2 sig figs, must round up)
Convert to scientific notation to the proper # of sig figs:
560,000
5.6 x 10^5
Convert to scientific notation to the proper # of sig figs:
0.0001010
1.010 x 10^-4
Convert to scientific notation to the proper # of sig figs:
1001
1.001 x 10^3
Convert to scientific notation to the proper # of sig figs:
500.0
5.000 x 10^2
Convert to scientific notation to the proper # of sig figs:
100
1 x 10^2
Convert the following # into standard form:
5.600 x 10^-2
0.05600
Convert the following # into standard form:
1.01 x 10^5
101000
Convert the following # into standard form:
5 x 10^0
5
Convert by sliding the decimal:
2.00 L =______mL
2000 mL
Convert by sliding the decimal:
700 hectoliters = _______liters
70000 L
Convert by sliding the decimal:
0.000542 kg = ________mg
542 mg
Convert the following by doing dimensional analysis:
400 g = _______lbs
0.88 lbs
Convert the following by doing dimensional analysis:
0.000226 kL =________cups
0.95 cups
Convert the following by doing dimensional analysis:
800 mL = ______pints
1.69 pints
Convert the following temperatures:
95 degrees F = ______ degrees C
35 degrees C
275 degrees F = _____ K
408 K
20 degrees C = ______K
293 K
The density of a substance is 4.0 g/cm^3. If a sample of the substance has a volume of 25 cm^3, then what is its mass?
100 g
You have a lead ball with a mass of 420 g. The density of lead is 10.5 g/cm^3. What is the volume of the ball?
40 cm^3
A loaf of bread has a mass of 500 g and volume of 2500 cm^3. What is the density of the bread?
0.2 g/cm^3
I have 20 g sample of aluminum and a 40 g sample of aluminum. What can I assume about the densities and volumes of each sample?
the density of each is the same
the volume of the 40 g sample would be twice as larger as the 20 g sample
density can’t change, so mass & volume increase proportionally

Get instant access to
all materials

Become a Member