Fundamental Chemistry CHM 130 Midterm Exam With
Questions And Answers Latest Update 2026
A. Multiple Choice (NOTE: Answer Key is at the end of the exam.)
1. How many milligrams are there in 1.0 kilograms?
a) 1.0 x 106 mg
b) 1.0 x 103 mg
c) 1.0 x 103 mg
d) 1.0 x 106 mg
2. What would be the volume in the graduated cylinder reported to the correct number of
significant figures?
a) 26 mL
b) 15.5 mL
c) 14.0 mL
d) 14 mL
3. Using the rules of significant figures calculate the following: 4.0021 – 0.179
a) 3.823
b) 4
c) 3.8231
d) 3.82
4. Which of the following is a chemical property of aluminum?
a) has a density of 2.70 g/cm3
b) has an atomic number of 13
c) reacts with copper sulfate to produce solid copper and aluminum sulfate
d) boils at 3200 oF
, 5. The distance from the earth to the moon is 38,200,000,000 centimeters. Express this
number in 5 significant figures.
a) 38.200 x 109 cm
b) 00.382 x 109 cm
c) 3.8200 x 1010 cm
d) 3.8200 x 1010 cm
6. Which of the following statements from Dalton's atomic theory is no longer true,
according to modern atomic theory?
a) Elements are made up of tiny particles called atoms.
b) Atoms are not created or destroyed in chemical reactions.
c) All atoms of a given element are identical.
d) Atoms are indivisible in chemical reactions.
7. The following measurements were taken in the lab for an irregularly shaped solid
substance.
mass of solid 22.663 g
volume of water in graduated cylinder 16.00 mL
volume of water + solid in graduated cylinder 24.70 mL
Calculate the density of the solid using significant figures.
a) 1.605 g/mL
b) 0.384 mL/g
c) 2.60 g/mL
d) 0.38389 mL/g
8. In which of the following sets are the symbols of the element, the number of the protons,
and the number of electrons given correctly?
a) Zn, 30 protons, 60 electrons
b) Cs, 55 protons, 132.9 electrons
c) F, 19 protons, 19 electrons
d) In, 49 protons, 49 electrons
9. The mass number of an element is equal to .
a) the total number of electrons in the nucleus.
b) less than twice the atomic number
c) the total number of protons and neutrons in the nucleus
d) a constant number for the light elements
Questions And Answers Latest Update 2026
A. Multiple Choice (NOTE: Answer Key is at the end of the exam.)
1. How many milligrams are there in 1.0 kilograms?
a) 1.0 x 106 mg
b) 1.0 x 103 mg
c) 1.0 x 103 mg
d) 1.0 x 106 mg
2. What would be the volume in the graduated cylinder reported to the correct number of
significant figures?
a) 26 mL
b) 15.5 mL
c) 14.0 mL
d) 14 mL
3. Using the rules of significant figures calculate the following: 4.0021 – 0.179
a) 3.823
b) 4
c) 3.8231
d) 3.82
4. Which of the following is a chemical property of aluminum?
a) has a density of 2.70 g/cm3
b) has an atomic number of 13
c) reacts with copper sulfate to produce solid copper and aluminum sulfate
d) boils at 3200 oF
, 5. The distance from the earth to the moon is 38,200,000,000 centimeters. Express this
number in 5 significant figures.
a) 38.200 x 109 cm
b) 00.382 x 109 cm
c) 3.8200 x 1010 cm
d) 3.8200 x 1010 cm
6. Which of the following statements from Dalton's atomic theory is no longer true,
according to modern atomic theory?
a) Elements are made up of tiny particles called atoms.
b) Atoms are not created or destroyed in chemical reactions.
c) All atoms of a given element are identical.
d) Atoms are indivisible in chemical reactions.
7. The following measurements were taken in the lab for an irregularly shaped solid
substance.
mass of solid 22.663 g
volume of water in graduated cylinder 16.00 mL
volume of water + solid in graduated cylinder 24.70 mL
Calculate the density of the solid using significant figures.
a) 1.605 g/mL
b) 0.384 mL/g
c) 2.60 g/mL
d) 0.38389 mL/g
8. In which of the following sets are the symbols of the element, the number of the protons,
and the number of electrons given correctly?
a) Zn, 30 protons, 60 electrons
b) Cs, 55 protons, 132.9 electrons
c) F, 19 protons, 19 electrons
d) In, 49 protons, 49 electrons
9. The mass number of an element is equal to .
a) the total number of electrons in the nucleus.
b) less than twice the atomic number
c) the total number of protons and neutrons in the nucleus
d) a constant number for the light elements
