CHEM 103 Module 1 | General Chemistry I with Lab Exam Q&A |
Portage Learning
Here are 100 original practice questions for CHEM 103 Module 1.
They are designed as foundational chemistry review questions, not
official exam items.
Question 1:
Which statement best defines matter?
A. Anything that has mass and occupies space
B. Anything that can be seen
C. Anything that contains carbon
D. Anything that conducts electricity
Correct answer:
A
Rationale:
Matter is anything that has mass and occupies space. It includes
solids, liquids, gases, and plasma.
Question 2:
Which of the following is a pure substance?
A. Air
B. Salt water
C. Gold
D. Salad dressing Correct answer: C
Rationale:
Gold is an element and therefore a pure substance. Air, salt water,
and salad dressing are mixtures.
,Question 3:
Which of the following is a heterogeneous mixture?
A. Salt water
B. Trail mix
C. Air
D. Sugar water
Correct answer:
B
Rationale:
A heterogeneous mixture has visibly different components. Trail mix
is heterogeneous.
Question 4:
Which of the following is a homogeneous mixture?
A. Sand and water
B. Oil and water
C. Salt water
D. Granite
Correct answer:
C
Rationale:
Salt water has a uniform composition throughout, making it a
homogeneous mixture.
Question 5:
Which of the following is a chemical property?
,A. Melting point
B. Density
C. Flammability
D. Color
Correct answer:
C
Rationale:
Flammability describes how a substance reacts chemically. Melting
point, density, and color are physical properties.
Question 6:
Which of the following is a physical change?
A. Rusting of iron
B. Burning wood
C. Ice melting
D. Baking a cake
Correct answer:
C
Rationale:
Ice melting changes only the state of water and does not alter its
chemical identity.
Question 7:
Which of the following is a chemical change?
A. Cutting paper
B. Dissolving sugar
C. Digestion of food
, D. Boiling water Correct answer: C
Rationale:
Digestion breaks chemical bonds and forms new substances. The
others are physical changes.
Question 8:
Which property is intensive?
A. Mass
B. Volume
C. Density
D. Length
Correct answer:
C
Rationale:
Intensive properties do not depend on the amount of substance.
Density is intensive.
Question 9:
Which property is extensive?
A. Temperature
B. Mass
C. Density
D. Boiling point Correct answer: B
Rationale:
Extensive properties depend on the amount of matter. Mass is
extensive.
Portage Learning
Here are 100 original practice questions for CHEM 103 Module 1.
They are designed as foundational chemistry review questions, not
official exam items.
Question 1:
Which statement best defines matter?
A. Anything that has mass and occupies space
B. Anything that can be seen
C. Anything that contains carbon
D. Anything that conducts electricity
Correct answer:
A
Rationale:
Matter is anything that has mass and occupies space. It includes
solids, liquids, gases, and plasma.
Question 2:
Which of the following is a pure substance?
A. Air
B. Salt water
C. Gold
D. Salad dressing Correct answer: C
Rationale:
Gold is an element and therefore a pure substance. Air, salt water,
and salad dressing are mixtures.
,Question 3:
Which of the following is a heterogeneous mixture?
A. Salt water
B. Trail mix
C. Air
D. Sugar water
Correct answer:
B
Rationale:
A heterogeneous mixture has visibly different components. Trail mix
is heterogeneous.
Question 4:
Which of the following is a homogeneous mixture?
A. Sand and water
B. Oil and water
C. Salt water
D. Granite
Correct answer:
C
Rationale:
Salt water has a uniform composition throughout, making it a
homogeneous mixture.
Question 5:
Which of the following is a chemical property?
,A. Melting point
B. Density
C. Flammability
D. Color
Correct answer:
C
Rationale:
Flammability describes how a substance reacts chemically. Melting
point, density, and color are physical properties.
Question 6:
Which of the following is a physical change?
A. Rusting of iron
B. Burning wood
C. Ice melting
D. Baking a cake
Correct answer:
C
Rationale:
Ice melting changes only the state of water and does not alter its
chemical identity.
Question 7:
Which of the following is a chemical change?
A. Cutting paper
B. Dissolving sugar
C. Digestion of food
, D. Boiling water Correct answer: C
Rationale:
Digestion breaks chemical bonds and forms new substances. The
others are physical changes.
Question 8:
Which property is intensive?
A. Mass
B. Volume
C. Density
D. Length
Correct answer:
C
Rationale:
Intensive properties do not depend on the amount of substance.
Density is intensive.
Question 9:
Which property is extensive?
A. Temperature
B. Mass
C. Density
D. Boiling point Correct answer: B
Rationale:
Extensive properties depend on the amount of matter. Mass is
extensive.
