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WorksheetsAccuracy/ Precision & SI units
Total questions: 7
Worksheet time: 6mins
Name
Class
Date
1.
Which of the Students was Accurate?
a)
Ash
b)
Casey
c)
Blake
2.
Which of the Students was Precise?
a)
Ash
b)
Casey
c)
Blake
3.
C2H5SH is burned in the presence of oxygen gas to form carbon dioxide and water. 0.7 grams of carbon dioxide should have been formed, but the reaction only produced 0.490 grams. What is the percent error of this reaction?
a)
25 %
b)
40 %
c)
30 %
d)
10 %
4.
Chloric acid reacts with strontium hydroxide to form strontium chlorate and water. 80 grams of strontium chlorate should have been formed, but the reaction only produced 64.00 grams. What is the percent yield of this reaction?
a)
25%
b)
50%
c)
75%
d)
80%
5.
What is the standard unit for mass?
a)
kg
b)
g
c)
lbs
d)
mg
6.
Convert 50 km to m
a)
500
b)
5,000
c)
50,000
d)
500,000
7.
Convert 0.085 μL into mL
a)
85
b)
850
c)
0.000085
d)
0.000000085
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