StraighterLine Chemistry Final Exam
Study Guide (2026) – Practice
Questions, Step-by-Step Solutions &
Exam Prep
THIS EXAM CONTAINS;
StraighterLine Chemistry Final Exam
Study Guide (2026)
Practice Questions,
Questions Solutions & Exam Prep
, StraighterLine Chemistry Final Exam Study Guide (2026) – Practice
Questions, Step-by-Step Solutions & Exam Prep
1. What is the term used for findings that are summarized based on a
pattern or trend?
A. Law
B. Hypothesis
C. Theory
D. Phenomena
E. Prediction
Correct answer: A
Rationale: A law describes a consistent natural pattern. Hypotheses
and theories explain why.
2. Which of the following is a tentative explanation for a set of
observations?
A. Law
B. Hypothesis
C. Theory
D. Phenomena
E. Prediction
Correct answer: B
3. If a liquid contains 60% sugar and 40% water throughout its
composition, what is it called?
A. Solute
B. Compound
C. Homogeneous mixture
D. Heterogeneous mixture
E. Solvent
Correct answer: C
,4. Which of the following does not have a uniform composition
throughout?
A. Element
B. Compound
C. Homogeneous mixture
D. Heterogeneous mixture
E. Solvent
Correct answer: D
5. Which one of these represents a physical change?
A. Water, when heated, forms steam
B. Bleach turns hair yellow
C. Sugar, when heated, becomes brown
D. Milk turns sour
E. Apples, when exposed to air, turn brown
Correct answer: A
6. How many micrograms are in 65.3 kg?
A. 0.653 μg
B. 6.53 × 10⁷ μg
C. 6.53 × 10⁴ μg
D. 6.53 × 10⁻⁸ μg
E. 6.53 × 10¹⁰ μg
Correct answer: E
7. A smartphone has dimensions 4.9 in (height), 2.3 in (width), 8.0 mm
(depth). Volume in cm³? (1 in = 2.54 cm)
A. 58 cm³
B. 1.7 × 10⁵ cm³
C. 90 cm³
D. 3.4 cm³
, E. 34 cm³
Correct answer: A
8. Given 1 in = 2.54 cm, 1.00 cm³ is equal to:
A. 16.4 in³
B. 6.45 in³
C. 0.394 in³
D. 0.155 in³
E. 0.0610 in³
Correct answer: E
9. What term defines a mass exactly equal to 1/12 the mass of one
carbon-12 atom?
A. Isotope number
B. Mass number
C. Mass-to-charge ratio
D. Atomic number
E. Atomic mass unit
Correct answer: E
10. How many neutrons in an atom of lead with mass number 208?
A. 82
B. 126
C. 208
D. 290
E. None of them
Correct answer: B (208 - 82 = 126)
11. Which element is chemically similar to magnesium?
A. Sulfur
B. Calcium
C. Iron
D. Nickel
Study Guide (2026) – Practice
Questions, Step-by-Step Solutions &
Exam Prep
THIS EXAM CONTAINS;
StraighterLine Chemistry Final Exam
Study Guide (2026)
Practice Questions,
Questions Solutions & Exam Prep
, StraighterLine Chemistry Final Exam Study Guide (2026) – Practice
Questions, Step-by-Step Solutions & Exam Prep
1. What is the term used for findings that are summarized based on a
pattern or trend?
A. Law
B. Hypothesis
C. Theory
D. Phenomena
E. Prediction
Correct answer: A
Rationale: A law describes a consistent natural pattern. Hypotheses
and theories explain why.
2. Which of the following is a tentative explanation for a set of
observations?
A. Law
B. Hypothesis
C. Theory
D. Phenomena
E. Prediction
Correct answer: B
3. If a liquid contains 60% sugar and 40% water throughout its
composition, what is it called?
A. Solute
B. Compound
C. Homogeneous mixture
D. Heterogeneous mixture
E. Solvent
Correct answer: C
,4. Which of the following does not have a uniform composition
throughout?
A. Element
B. Compound
C. Homogeneous mixture
D. Heterogeneous mixture
E. Solvent
Correct answer: D
5. Which one of these represents a physical change?
A. Water, when heated, forms steam
B. Bleach turns hair yellow
C. Sugar, when heated, becomes brown
D. Milk turns sour
E. Apples, when exposed to air, turn brown
Correct answer: A
6. How many micrograms are in 65.3 kg?
A. 0.653 μg
B. 6.53 × 10⁷ μg
C. 6.53 × 10⁴ μg
D. 6.53 × 10⁻⁸ μg
E. 6.53 × 10¹⁰ μg
Correct answer: E
7. A smartphone has dimensions 4.9 in (height), 2.3 in (width), 8.0 mm
(depth). Volume in cm³? (1 in = 2.54 cm)
A. 58 cm³
B. 1.7 × 10⁵ cm³
C. 90 cm³
D. 3.4 cm³
, E. 34 cm³
Correct answer: A
8. Given 1 in = 2.54 cm, 1.00 cm³ is equal to:
A. 16.4 in³
B. 6.45 in³
C. 0.394 in³
D. 0.155 in³
E. 0.0610 in³
Correct answer: E
9. What term defines a mass exactly equal to 1/12 the mass of one
carbon-12 atom?
A. Isotope number
B. Mass number
C. Mass-to-charge ratio
D. Atomic number
E. Atomic mass unit
Correct answer: E
10. How many neutrons in an atom of lead with mass number 208?
A. 82
B. 126
C. 208
D. 290
E. None of them
Correct answer: B (208 - 82 = 126)
11. Which element is chemically similar to magnesium?
A. Sulfur
B. Calcium
C. Iron
D. Nickel
