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Lab Practicum: CHEM120 / CHEM 120 –
Introduction to General, Organic &
Biological Chemistry | Updated 2025/2026
Edition | Verified Questions & Answers |
Grade A | Chamberlain University
Overview
50 Verified Lab Practicum Questions | 100% Correct Answers | Step-by-Step Solutions |
Aligned with Chamberlain CHEM120 Curriculum
This comprehensive lab practicum review covers general chemistry (bonding, reactions,
acids/bases), organic chemistry (functional groups, nomenclature), and biological chemistry
(biomolecules, enzymes, metabolism). Includes lab safety, measurements, titration,
spectrophotometry, and qualitative analysis.
Questions with Answers
Section 1: Lab Safety & Measurements (1–10)
1. What is the first action if a chemical splashes in your eye?
A) Rub the eye
B) Flush with water for 15 minutes at eyewash station
C) Apply neutralizer
D) Wait for instructor
Answer: B)
Solution: Immediate flushing prevents damage; 15 min minimum (OSHA/ACS guideline).
2. The correct unit for measuring volume in lab is:
A) Grams
B) Milliliters (mL)
C) Meters
D) Moles
Lab Practicum: CHEM120 |
, 2
Answer: B)
Solution: Use graduated cylinder or pipette; 1 L = 1000 mL.
3. When reading a meniscus, read at:
A) Top of curve
B) Bottom of curve (eye level)
C) Side
D) No reading needed
Answer: B)
Solution: For water (concave); mercury is convex—read top.
4. Significant figures in 0.00520 g:
A) 2
B) 3
C) 4
D) 5
Answer: B)
Solution: Leading zeros don't count; 5,2,0 = 3 sig figs.
5. Density of a substance = mass/volume. If mass = 25.0 g, volume = 10.0 mL, density =
?
Answer: 2.50 g/mL
Solution: 25.0 ÷ 10.0 = 2.50 g/mL (3 sig figs).
6. The safest way to smell a chemical is:
A) Direct inhalation
B) Wafting toward nose
C) Taste it
D) No smelling
Answer: B)
Solution: Wafting prevents direct exposure.
7. Goggles are required when:
A) Only with acids
B) Handling any chemical or glassware
C) Optional
D) Only heating
Answer: B)
Solution: ANSI Z87.1; always in lab.
Lab Practicum: CHEM120 |
Lab Practicum: CHEM120 / CHEM 120 –
Introduction to General, Organic &
Biological Chemistry | Updated 2025/2026
Edition | Verified Questions & Answers |
Grade A | Chamberlain University
Overview
50 Verified Lab Practicum Questions | 100% Correct Answers | Step-by-Step Solutions |
Aligned with Chamberlain CHEM120 Curriculum
This comprehensive lab practicum review covers general chemistry (bonding, reactions,
acids/bases), organic chemistry (functional groups, nomenclature), and biological chemistry
(biomolecules, enzymes, metabolism). Includes lab safety, measurements, titration,
spectrophotometry, and qualitative analysis.
Questions with Answers
Section 1: Lab Safety & Measurements (1–10)
1. What is the first action if a chemical splashes in your eye?
A) Rub the eye
B) Flush with water for 15 minutes at eyewash station
C) Apply neutralizer
D) Wait for instructor
Answer: B)
Solution: Immediate flushing prevents damage; 15 min minimum (OSHA/ACS guideline).
2. The correct unit for measuring volume in lab is:
A) Grams
B) Milliliters (mL)
C) Meters
D) Moles
Lab Practicum: CHEM120 |
, 2
Answer: B)
Solution: Use graduated cylinder or pipette; 1 L = 1000 mL.
3. When reading a meniscus, read at:
A) Top of curve
B) Bottom of curve (eye level)
C) Side
D) No reading needed
Answer: B)
Solution: For water (concave); mercury is convex—read top.
4. Significant figures in 0.00520 g:
A) 2
B) 3
C) 4
D) 5
Answer: B)
Solution: Leading zeros don't count; 5,2,0 = 3 sig figs.
5. Density of a substance = mass/volume. If mass = 25.0 g, volume = 10.0 mL, density =
?
Answer: 2.50 g/mL
Solution: 25.0 ÷ 10.0 = 2.50 g/mL (3 sig figs).
6. The safest way to smell a chemical is:
A) Direct inhalation
B) Wafting toward nose
C) Taste it
D) No smelling
Answer: B)
Solution: Wafting prevents direct exposure.
7. Goggles are required when:
A) Only with acids
B) Handling any chemical or glassware
C) Optional
D) Only heating
Answer: B)
Solution: ANSI Z87.1; always in lab.
Lab Practicum: CHEM120 |
