CHEM 103 GEnEral CHEMistry i PortaGE lEarninG ModulEs 1-6 &
Final ExaM aCtual ExaM 2026/2027 – CoMPlEtE ExaM-stylE
QuEstions witH dEtailEd rationalEs | Pass GuarantEEd – a+
GradEd
Module 1: Matter, Measurement & Atomic Structure (Questions 1-25)
**Q1.** Which of the following is an example of a chemical property of matter?
A. Density
B. Melting point
C. Flammability
D. Boiling point
Correct Answer: C
Rationale: A chemical property describes a substance's ability to undergo a
chemical change or reaction. Flammability describes how easily a substance
burns, which is a chemical reaction with oxygen. Density, melting point, and
boiling point are physical properties because they describe the state or physical
condition of a substance without changing its chemical identity.
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**Q2.** Convert 0.0045 kilograms to milligrams.
A. 4.5 mg
, B. 45 mg
C. 450 mg
D. 4500 mg
Correct Answer: D
Rationale: To convert kilograms to milligrams, one must move the decimal point
six places to the right (1 kg = 1,000,000 mg). Therefore, 0.0045 kg becomes
4,500 mg. 4.5 mg is off by a factor of 1000, and 450 mg is off by a factor of 10.
---
**Q3.** Which of the following is an intensive property of matter?
A. Mass
B. Volume
C. Density
D. Weight
Correct Answer: C
Rationale: Intensive properties do not depend on the amount of substance
present. Density is an intensive property because it remains constant
regardless of sample size. Mass, volume, and weight are extensive properties
because they depend on the amount of matter present.
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**Q4.** The measurement 0.0003405 has how many significant figures?
Final ExaM aCtual ExaM 2026/2027 – CoMPlEtE ExaM-stylE
QuEstions witH dEtailEd rationalEs | Pass GuarantEEd – a+
GradEd
Module 1: Matter, Measurement & Atomic Structure (Questions 1-25)
**Q1.** Which of the following is an example of a chemical property of matter?
A. Density
B. Melting point
C. Flammability
D. Boiling point
Correct Answer: C
Rationale: A chemical property describes a substance's ability to undergo a
chemical change or reaction. Flammability describes how easily a substance
burns, which is a chemical reaction with oxygen. Density, melting point, and
boiling point are physical properties because they describe the state or physical
condition of a substance without changing its chemical identity.
---
**Q2.** Convert 0.0045 kilograms to milligrams.
A. 4.5 mg
, B. 45 mg
C. 450 mg
D. 4500 mg
Correct Answer: D
Rationale: To convert kilograms to milligrams, one must move the decimal point
six places to the right (1 kg = 1,000,000 mg). Therefore, 0.0045 kg becomes
4,500 mg. 4.5 mg is off by a factor of 1000, and 450 mg is off by a factor of 10.
---
**Q3.** Which of the following is an intensive property of matter?
A. Mass
B. Volume
C. Density
D. Weight
Correct Answer: C
Rationale: Intensive properties do not depend on the amount of substance
present. Density is an intensive property because it remains constant
regardless of sample size. Mass, volume, and weight are extensive properties
because they depend on the amount of matter present.
---
**Q4.** The measurement 0.0003405 has how many significant figures?
