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Worksheets1.1 Chem Lab & 1.2 Numbers in Chemistry Review
Total questions: 40
Worksheet time: 40mins
Convert from meters to cm: 9 meters
900 cm
90 cm
0.9 cm
0.09 cm
Convert 17 m to cm:
0.17 cm
0.017 cm
1,700 cm
170 cm
Convert 300 meters to centimeters:
3000 cm
0.3 cm
30,000 cm
3 cn
Convert 8 kilometers to meters
800 m
80,000 m
8,000 m
.008 m
1000 grams = _____ kilograms
0.0001
1,000,000
10
1
Is 20 g greater than, less than, or equal to 2 kg?
greater than
less than
equal to
648 g = ____ mg
6,480
64,800
648,000
64.8
40 cm = ______ mm
( 1 cm = 10 mm)
4000
40
400
None of the Above
What is the basic unit of mass in the metric system?
Liter
Meter
Gram
Kilometer
Select the largest unit.
kilogram
centigram
decigram
decagram
900 cm ____ 9000 mm
(1 cm is 10 mm)
<
=
>
Convert 300 cm to m:
(100 cm = 1 m)
3 m
30 m
0.3 m
0.03 m
How many hours are in a fortnight (2 weeks)?
1 week = 7 days; 1 day = 24 hours [Note: do not round answer]
672 hours
168 hours
336 hours
504 hours
You know that 12 inches = 1 foot. Convert 60 inches to feet.
720 feet
5 feet
5 inches
72 feet
A 12-ounce bottle of shampoo lasts Enrique 16 weeks. How long would you expect an 18-ounce bottle of the same brand to last him?
24 Weeks
24-ounce bottle
10.6 Weeks
10.6-ounce bottle
The Olympic record for the high jump is just over 2.6 yards. What is that distance in feet? (3 ft = 1 yd)
0.867 ft
7.8 ft
8.07 ft
8.27 ft
You roof has a leak. If it leaks at a rate of 14 drops per minute, how many hours will it take to fill a 5 gallon bucket? (20 drops = 1 mL; 30 mL = 1oz; 64 oz = 1 gal) [Round answer to 2 sig figs]
230 hours
950 hours
190 hours
1900 hours
You know 16 cups = 1 gallon. Convert 3.5 gallons into cups.
56 cups
0.21875 cups
19.5 cups
48 cups
How many gallons are in a pool that holds 758,000 Liters?
(1 gallon = 3.79 Liters)
200
20,000
200,000
2,000,000
Convert 40 ounces to pounds (16 oz = 1 lb)
2.5 pounds
.4 pounds
2/5 pounds
5 pounds
A passenger jet has a speed of 900 km/h.
What is its speed in m/s?
(1 km = 1000 m)
250 m/s
324 m/s
1,500 m/s
2,500 m/s
Convert 5.50 yards into centimeters.
502.92 cm
503.32 cm
504.12 cm
505.72 cm
Which of the following is NOT an example of a chemical change?
changing color
getting smaller in size
producing a precipitate
releasing a gas
How many significant figures: 216 m
1
2
3
0
How many significant figures: 2016 m
1
2
3
4
How many significant figures: 153.0 mL
1
2
3
4
How many significant figures: 0.012 km
1
2
3
4
How many significant figures: 0.001 g
4
3
2
1
Solve and round accordingly.
25.0 x 17 = ?
430
425
425.0
430.0
calculate the following to the correct number of sig figs.
32.451 - 21.5
11.0
10.951
11
10.95
Solve and give your answer with the correct number of significant figures
24.28 + 12.5
3.687 x 101
36.8
37
3.70x101
The half-life of Uranium is 2.5 x 105 years. What is this in standard form?
2500000
250
25000
250000
Write 4.83 x 10-6 in Standard Form.
0.00048300
0.00004830
0.00000483
0.00000438
Convert 0.0000037 to Scientific Notation.
.37 x 10-7
3.7 x 10-6
37 x 10-5
370 x 10-4
What should you do if you break glass in the lab?
Tell the teacher.
Sweep up the glass.
Pick up the glass with your hands.
Ignore it; the teacher will clean it up when she sees it later.
Part of lab safety includes reading the lab procedure...
before doing the lab
while doing the lab
after doing the lab
only if you think you really need it
You should never ______ chemicals in the lab.
taste
touch
smell
all of the above
Helping to clean up the lab or classroom is the job of
old students.
transfer students.
each and every student.
only the teacher.
You should report accidents to the teacher __.
after the class is over
immediately
the following day
never
When you are smelling a chemical you should
Smell it directly
Waft the odor
Never smell
Take a big sniff
