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Quiz Chapter 6: Periodic Table

10 questions · Form 1 Science Bab 6: Periodic Table

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. How can a compound like water ($H_2O$) be decomposed into its constituent elements (hydrogen and oxygen)?

  1. Filtration through micro-filters
  2. Boiling to high temperatures
  3. Electrolysis
  4. Paper chromatography
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Answer: C

Decomposing a compound requires chemical methods; passing an electric current through water (electrolysis) breaks it into hydrogen and oxygen gas.

2. Which element is liquid at room temperature and classified as a metal?

  1. Bromine
  2. Mercury
  3. Sodium
  4. Chlorine
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Answer: B

Mercury is a metal that remains liquid at normal room temperature.

3. What charge is carried by an electron?

  1. Positive (+)
  2. Negative (-)
  3. Neutral (0)
  4. Variable
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Answer: B

Electrons carry a single negative relative electric charge (-1).

4. Which physical separation technique isolates different color dyes present in black ink?

  1. Paper chromatography
  2. Simple distillation
  3. Sedimentation
  4. Filtration
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Answer: A

Paper chromatography separates different dissolved pigments based on their varying solubilities in a solvent.

5. Which of the following substances is classified as a compound?

  1. Air
  2. Water (H2O)
  3. Copper wire
  4. Salt solution
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Answer: B

Water (H2O) is a compound made of hydrogen and oxygen atoms chemically combined in a fixed 2:1 ratio.

6. What do horizontal rows in the Periodic Table represent?

  1. Groups
  2. Periods
  3. Families
  4. Bonds
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Answer: B

Horizontal rows are called periods (numbered 1 to 7), while vertical columns are called groups.

7. Which technique recovers pure drinking water from seawater by boiling and condensing the vapor?

  1. Distillation
  2. Filtration
  3. Decantation
  4. Magnetic separation
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Answer: A

Distillation boils liquid into steam and condenses it back into pure water, leaving dissolved salt behind.

8. What technique would you use to separate insoluble sand particles from a mixture with water?

  1. Distillation
  2. Filtration
  3. Chromatography
  4. Evaporation
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Answer: B

Filtration separates insoluble solids (residue) from liquids (filtrate) using filter paper.

9. What term describes the ability of a metal to be hammered or rolled into thin sheets without breaking?

  1. Ductility
  2. Malleability
  3. Solubility
  4. Brittleness
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Answer: B

Malleability is the physical property of a material allowing it to be hammered or pressed into thin sheets.

10. Elements belonging to the same vertical group in the Periodic Table share similar...

  1. Proton numbers
  2. Numbers of electron shells
  3. Chemical properties
  4. Physical states at room temperature
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Answer: C

Elements in the same group possess the same number of outer (valence) electrons, giving them similar chemical properties.

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