WGU C165 – INTEGRATED PHYSICAL SCIENCES ULTIMATE EXAM PREP -
VERIFIED ANSWERS AND QUESTIONS - MOST RECENT EDITION 2026/2027
1. What is the SI unit of mass?
A) Kilogram
B) Pound
C) Newton
D) Gram
✓ Answer: A
2. Which step comes FIRST in the scientific method?
A) Form a hypothesis
B) Make an observation
C) Analyze data
D) Draw a conclusion
✓ Answer: B
3. A hypothesis is best described as:
A) A proven fact
B) A law of nature
C) A testable explanation or prediction
D) A conclusion supported by data
✓ Answer: C
4. Which of the following represents a quantitative observation?
A) The rock is rough
B) The liquid smells sweet
C) The sky appears blue
D) The temperature is 45°C
✓ Answer: D
5. The metric prefix 'kilo-' means:
A) 10³
B) 10⁻³
C) 10⁶
D) 10⁻⁶
,✓ Answer: A
6. Which tool measures mass most accurately in a laboratory?
A) Spring scale
B) Triple-beam balance
C) Ruler
D) Graduated cylinder
✓ Answer: B
7. The independent variable in an experiment is:
A) The variable deliberately changed by the experimenter
B) The variable that is measured as a result
C) The variable kept constant
D) The control group variable
✓ Answer: A
8. Scientific notation for 0.000056 is:
A) 5.6 × 10⁴
B) 56 × 10⁻⁶
C) 5.6 × 10⁻⁵
D) 0.56 × 10⁻⁴
✓ Answer: C
9. Accuracy in measurement refers to:
A) How repeatable a measurement is
B) How close a measurement is to the true value
C) The number of significant figures used
D) The range of possible values
✓ Answer: B
10. A control group in an experiment:
A) Receives the experimental treatment
B) Has no variables at all
C) Is always the largest group
D) Receives no treatment and serves as a baseline
✓ Answer: D
11. The dependent variable is:
A) The variable the experimenter manipulates
B) Always plotted on the x-axis
C) The measured response to the independent variable
, D) Kept constant throughout the experiment
✓ Answer: C
12. Which of the following is an SI base unit?
A) Meter
B) Centimeter
C) Mile
D) Liter
✓ Answer: A
13. How many milliliters are in 1 liter?
A) 10
B) 1000
C) 100
D) 10,000
✓ Answer: B
14. Precision in measurement refers to:
A) The reproducibility of repeated measurements
B) How close results are to the true value
C) The absence of errors
D) The number of trials performed
✓ Answer: A
15. A theory in science is:
A) A guess about what will happen
B) An untested hypothesis
C) An absolute truth
D) A well-tested explanation supported by extensive evidence
✓ Answer: D
Unit 2: Matter & Its Properties
16. Which state of matter has a definite volume but no definite shape?
A) Solid
B) Liquid
C) Gas
D) Plasma
✓ Answer: B
17. A physical change differs from a chemical change in that:
, A) No new substance is formed during a physical change
B) Physical changes are irreversible
C) Chemical changes do not release energy
D) Physical changes always involve gases
✓ Answer: A
18. Which of the following is an example of a chemical change?
A) Ice melting
B) Sugar dissolving in water
C) Iron rusting
D) Glass breaking
✓ Answer: C
19. Density is defined as:
A) Mass times volume
B) Mass divided by volume
C) Volume divided by mass
D) Weight divided by area
✓ Answer: B
20. An element is:
A) A compound made of two or more atoms
B) A mixture of substances
C) Any liquid substance
D) A pure substance made of only one type of atom
✓ Answer: D
21. Which of the following is a mixture?
A) Salt water
B) Pure water
C) Carbon dioxide
D) Gold
✓ Answer: A
22. The boiling point of water at standard pressure is:
A) 0°C
B) 50°C
C) 100°C
D) 212°F only
✓ Answer: C
23. Sublimation is the process by which:
VERIFIED ANSWERS AND QUESTIONS - MOST RECENT EDITION 2026/2027
1. What is the SI unit of mass?
A) Kilogram
B) Pound
C) Newton
D) Gram
✓ Answer: A
2. Which step comes FIRST in the scientific method?
A) Form a hypothesis
B) Make an observation
C) Analyze data
D) Draw a conclusion
✓ Answer: B
3. A hypothesis is best described as:
A) A proven fact
B) A law of nature
C) A testable explanation or prediction
D) A conclusion supported by data
✓ Answer: C
4. Which of the following represents a quantitative observation?
A) The rock is rough
B) The liquid smells sweet
C) The sky appears blue
D) The temperature is 45°C
✓ Answer: D
5. The metric prefix 'kilo-' means:
A) 10³
B) 10⁻³
C) 10⁶
D) 10⁻⁶
,✓ Answer: A
6. Which tool measures mass most accurately in a laboratory?
A) Spring scale
B) Triple-beam balance
C) Ruler
D) Graduated cylinder
✓ Answer: B
7. The independent variable in an experiment is:
A) The variable deliberately changed by the experimenter
B) The variable that is measured as a result
C) The variable kept constant
D) The control group variable
✓ Answer: A
8. Scientific notation for 0.000056 is:
A) 5.6 × 10⁴
B) 56 × 10⁻⁶
C) 5.6 × 10⁻⁵
D) 0.56 × 10⁻⁴
✓ Answer: C
9. Accuracy in measurement refers to:
A) How repeatable a measurement is
B) How close a measurement is to the true value
C) The number of significant figures used
D) The range of possible values
✓ Answer: B
10. A control group in an experiment:
A) Receives the experimental treatment
B) Has no variables at all
C) Is always the largest group
D) Receives no treatment and serves as a baseline
✓ Answer: D
11. The dependent variable is:
A) The variable the experimenter manipulates
B) Always plotted on the x-axis
C) The measured response to the independent variable
, D) Kept constant throughout the experiment
✓ Answer: C
12. Which of the following is an SI base unit?
A) Meter
B) Centimeter
C) Mile
D) Liter
✓ Answer: A
13. How many milliliters are in 1 liter?
A) 10
B) 1000
C) 100
D) 10,000
✓ Answer: B
14. Precision in measurement refers to:
A) The reproducibility of repeated measurements
B) How close results are to the true value
C) The absence of errors
D) The number of trials performed
✓ Answer: A
15. A theory in science is:
A) A guess about what will happen
B) An untested hypothesis
C) An absolute truth
D) A well-tested explanation supported by extensive evidence
✓ Answer: D
Unit 2: Matter & Its Properties
16. Which state of matter has a definite volume but no definite shape?
A) Solid
B) Liquid
C) Gas
D) Plasma
✓ Answer: B
17. A physical change differs from a chemical change in that:
, A) No new substance is formed during a physical change
B) Physical changes are irreversible
C) Chemical changes do not release energy
D) Physical changes always involve gases
✓ Answer: A
18. Which of the following is an example of a chemical change?
A) Ice melting
B) Sugar dissolving in water
C) Iron rusting
D) Glass breaking
✓ Answer: C
19. Density is defined as:
A) Mass times volume
B) Mass divided by volume
C) Volume divided by mass
D) Weight divided by area
✓ Answer: B
20. An element is:
A) A compound made of two or more atoms
B) A mixture of substances
C) Any liquid substance
D) A pure substance made of only one type of atom
✓ Answer: D
21. Which of the following is a mixture?
A) Salt water
B) Pure water
C) Carbon dioxide
D) Gold
✓ Answer: A
22. The boiling point of water at standard pressure is:
A) 0°C
B) 50°C
C) 100°C
D) 212°F only
✓ Answer: C
23. Sublimation is the process by which:
