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Quiz Chapter 6: Periodic Table

10 questions ยท Form 1 Science Bab 6: Periodic Table

Question 1 of 10Score: 0

What charge is carried by an electron?

Full Question List & Answer Key

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

1. 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).

2. Which subatomic particles are located inside the nucleus of an atom?

  1. Protons and Electrons
  2. Protons and Neutrons
  3. Neutrons and Electrons
  4. Electrons only
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Answer: B

The nucleus at the center of an atom contains positively charged protons and uncharged neutrons, while electrons orbit outside.

3. Which separation method is best suited to separate iron filings from sulfur powder?

  1. Filtration
  2. Evaporation
  3. Magnetic separation
  4. Chromatography
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Answer: C

Iron is a magnetic metal, so a magnet can easily attract iron filings while leaving non-magnetic sulfur powder behind.

4. Which statement correctly describes a mixture?

  1. Its components are combined in a fixed chemical proportion
  2. Its components can only be separated by electrolysis
  3. It retains the individual physical properties of its constituent substances
  4. A chemical reaction occurs during its formation
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Answer: C

Because no chemical reaction occurs when forming a mixture, each constituent substance keeps its own original properties.

5. What happens when iron reacts chemically with sulfur upon heating?

  1. A mixture of iron and sulfur is formed
  2. Iron sulfide (a compound) is formed with completely new properties
  3. Iron dissolves into sulfur liquid without chemical change
  4. A magnetic gas is produced
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Answer: B

Heating iron and sulfur causes a chemical reaction forming iron sulfide ($FeS$), a compound that is non-magnetic and chemically distinct.

6. Which of the following is a general physical characteristic of metals?

  1. Dull appearance
  2. Poor electrical conductivity
  3. Good heat conductivity
  4. Brittle texture in solid form
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Answer: C

Metals are generally excellent conductors of both heat and electricity, with shiny surfaces and high ductility/malleability.

7. 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.

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. 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.

10. How are elements ordered in the modern Periodic Table?

  1. Increasing atomic mass
  2. Increasing proton number
  3. Decreasing electron count
  4. Alphabetical order of chemical symbols
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Answer: B

Elements in the modern Periodic Table are arranged sequentially by increasing proton number (atomic number).

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