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Quiz Chapter 1: Introduction to Chemistry

10 questions · Form 4 Chemistry Bab 1: Introduction to Chemistry

10 questions · plays in fullscreen

Full Question List & Answer Key

Prefer reading to quizzing? All 10 questions are listed below with the answer and explanation under each one.

1. Which substance should be sprinkled over a mercury spill in the laboratory to safely treat it?

  1. Sulfur powder
  2. Sodium chloride
  3. Calcium hydroxide
  4. Activated charcoal
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Answer: A

Sulfur powder reacts with toxic mercury liquid to form non-volatile mercury(II) sulfide (HgS).

2. In a scientific experiment, what is the variable that is systematically altered to test a hypothesis?

  1. Responding variable
  2. Fixed variable
  3. Controlled variable
  4. Manipulated variable
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Answer: D

The manipulated variable is deliberately changed by the experimenter to observe its effects.

3. What is the primary definition of chemistry?

  1. The study of living organisms and their cell functions
  2. The branch of science dealing with forces, energy, and space
  3. The study of the composition, structure, properties, and interactions of matter
  4. The study of celestial bodies and celestial events
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Answer: C

Chemistry focuses on matter, its structure, properties, composition, and chemical reactions.

4. When designing a graph to present experimental data, on which axis is the responding variable placed?

  1. Y-axis (vertical)
  2. X-axis (horizontal)
  3. Z-axis (depth)
  4. Title legend axis
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Answer: A

Standard scientific convention places the manipulated variable on the X-axis and the responding variable on the Y-axis.

5. What type of variable is kept constant throughout an experiment to maintain valid results?

  1. Manipulated variable
  2. Fixed variable
  3. Responding variable
  4. Dependent variable
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Answer: B

Fixed (or controlled) variables are held constant so that only the manipulated variable affects the outcome.

6. Which safety equipment should be used if a student's clothing catches on fire?

  1. Fume chamber
  2. Eyewash station
  3. Safety shower or fire blanket
  4. Laminar flow hood
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Answer: C

Safety showers or fire blankets rapidly smother flames on personal attire or wash away burning substances.

7. Which career path directly relies on the synthesis and analysis of pharmaceutical compounds?

  1. Agronomist
  2. Civil Engineer
  3. Pharmacist
  4. Geologist
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Answer: C

Pharmacy combines chemistry and medicine to synthesize, evaluate, and dispense medications.

8. Where does the English word 'chemistry' trace its historical roots from?

  1. The Greek word 'Chemia'
  2. The Latin word 'Elementum'
  3. The Arabic word 'Al-kimiya'
  4. The Sanskrit word 'Rasayana'
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Answer: C

The term originates from the Arabic word 'al-kimiya', referencing early chemical practices and alchemy.

9. Which item of personal protective equipment (PPE) specifically protects the eyes from chemical splashes?

  1. Face shield
  2. Safety goggles
  3. Lab coat
  4. Surgical mask
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Answer: B

Safety goggles form a secure seal around eyes to guard against liquid chemical splashes and dangerous fumes.

10. What is the first step in a scientific investigation sequence?

  1. Formulating a hypothesis
  2. Identifying variables
  3. Making observations
  4. Designing the experiment
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Answer: C

Scientific investigation begins with careful observation before questions are framed and hypotheses are made.

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