CHEM 103 Exam 1 test questions 2026
updates
Which of the following represents the smallest mass?
3.5 x 105 ng
350 mg
3.5 x 10-8 kg
3.5 x 109 μg
0.035 g --Verified--Solution----3.5 x 10-8 kg
Which of the following numbers has exactly four significant figures?
0.007
4.03 x 108
1.00739
2660
1.280 --Verified--Solution----1.280
If the following calculations are carried out, how many significant
figures should be reported in the answer?
, 22.85−10..009975
1
2
3
4
5 --Verified--Solution----4
Which of the following statements about glucose, C6H12O6, is correct?
Glucose is a mixture.
A physical process could separate a sample of glucose into simpler
substances
Glucose is a pure substance.
Glucose cannot be separated into simpler substances by any means.
More than one of the above is correct. --Verified--Solution----Glucose is
a pure substance
Which of the following best describes a property of a gas?
The atoms/molecules are typically very close together.
The atoms/molecules can move relative to each other. This allows gasses
to take the shape of their container.
The atoms/molecules are arranged in an ordered crystal structure.
updates
Which of the following represents the smallest mass?
3.5 x 105 ng
350 mg
3.5 x 10-8 kg
3.5 x 109 μg
0.035 g --Verified--Solution----3.5 x 10-8 kg
Which of the following numbers has exactly four significant figures?
0.007
4.03 x 108
1.00739
2660
1.280 --Verified--Solution----1.280
If the following calculations are carried out, how many significant
figures should be reported in the answer?
, 22.85−10..009975
1
2
3
4
5 --Verified--Solution----4
Which of the following statements about glucose, C6H12O6, is correct?
Glucose is a mixture.
A physical process could separate a sample of glucose into simpler
substances
Glucose is a pure substance.
Glucose cannot be separated into simpler substances by any means.
More than one of the above is correct. --Verified--Solution----Glucose is
a pure substance
Which of the following best describes a property of a gas?
The atoms/molecules are typically very close together.
The atoms/molecules can move relative to each other. This allows gasses
to take the shape of their container.
The atoms/molecules are arranged in an ordered crystal structure.
