WorksheetsSecond Chemistry Test
Total questions: 20
Worksheet time: 11mins
Convert 2.5 grams into milligrams.
25 mg
25,000 mg
250 mg
2,500 mg
How many inches are in 1 mile?
66,330 inches
63,360 inches
63,660 inches
63,066 inches
The waiting time to ride a roller coaster is 20 minutes when 150 people are in line. How long is the waiting time when 240 people are in line?
75 minutes
120 minutes
32 minutes
12.5 minutes
Convert 62 miles per hour to feet per second.
5,456 ft/s
0.003 ft/s
91 ft/s
909 ft/s
If a person weighs 125 pounds, how many kilograms do they weigh?
125 kg
50 kg
275 kg
56.8 kg
The distance from Phoenix to Chandler is 30.5 miles. What is that in cm?
1,932,480 cm
161,040 cm
4,908,499 cm
53,680 cm
Convert 0.0786 kL to dL.
786 dL
78.6 dL
7.86 dL
0.786 dL
The Metric System is based on powers of:
5's
10's
20's
50's
Which unit below is the largest?
Kilogram
Gram
Centigrams
Milligrams
Which unit below is the SMALLEST?
Kilometer
Millimeters
Meters
Centimeters
Convert 6 cm to mm. How many mm equals 6 cm?
6,000 mm
600 mm
60 mm
6 mm
How many milligrams are in 100 grams? Convert 100 grams (g) to milligrams (mg).
10 mg
1,000 mg
100,000 mg
1,000,000 mg
Which one of the following pair of substances illustrates law of multiple proportions?
Calcium oxide and calcium hydroxide
Sodium chloride and sodium bromide
Carbon monoxide and carbon dioxide
None of the above
The percent by mass of carbon to oxygen in CO2 is _.
100%
33.3%
72.7%
27.3%
The percentage of copper and oxygen in samples of “CuO” obtained by different methods were found to be the same. This illustrates the law of:
Definite proportions
Conservation of mass
Multiple proportions
Reciprocal proportions
Which group of the periodic table is composed of inert (not reactive) gases?
answer choices
alkali metals
alkaline earth metals
halogens
noble gases
How many neutrons does calcium have?
20
40
60
0
