Grade 10 Physical Sciences · Matter and Materials · Paper 2 (Chemistry)

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Question 1.3 · November 2019 · Paper 2 · National (DBE) · 2 marks

Various options are provided as possible answers to the following questions. Choose the answer and write only the letter (A–D) next to the question numbers (1.1 to 1.10) in the ANSWER BOOK, e.g. 1.11 E. Each question has only ONE correct answer.

1.3 Elements in the periodic table are arranged in order of increasing ...(2)

A mass number.
B number of protons.
C number of neutrons.
D number of nucleons.

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4. Question 3.1.1 · November 2019 · Paper 2 · National (DBE) · 2 marks
3.1 The three isotopes of magnesium are Mg-24, Mg-25 and Mg-26. The percentage abundance of the three isotopes is $80%$ , $10%$ and $10%$ respectively.

Answer the questions that follow.
3.1.1 Define the term isotope.(2)
Show the memo (1 tick)Memo
1. ✓
  Definition of isotopeAtoms of the same element having the same number of protons, but different number of neutrons.
  
  OR: Same atomic number, but different mass numbers.
  2 marks · Define matter and atom terms
5. Question 1.1 · November 2024 · Paper 2 · Provincial · 2 marks
1.1 The process when a solid substance change directly to gaseous phase is called ...(2)
1. A evaporation.
2. B condensation.
3. C sublimation.
4. D boiling.
Show the memo (1 tick)Memo
1. ✓
  Correct optionSublimation is the change of a solid directly into a gas without passing through the liquid phase. Evaporation and boiling start from a liquid; condensation is gas to liquid.
  
  Answer: C
  2 marks · Define matter and atom terms
6. Question 3.1 · November 2024 · Paper 2 · Provincial · 2 marks
Grade 10 learners conducted an experiment to determine the heating curve of water by using ice cubes. The experiment was set up as shown below.
3.1 Define the term temperature.(2)
Show the memo (1 tick)Memo
1. ✓
  Definition of temperatureMeasure of the average kinetic energy of the particles.
  2 marks · Define matter and atom terms
7. Question 3.2 · June 2024 · Paper 2 · Provincial · 2 marks
The diagram below represents the bonding that takes place in a molecule.

The electronegativity difference between element X and oxygen is $1, 0$ .
3.2 To which group in the periodic table does element X belong? Give a reason for your answer.(2)
Show the memo (2 ticks)Memo
1. ✓
  GroupGroup IV
  1 mark · Locate elements on the periodic table
2. ✓
  Reasoncan form 4 bonding pairs with no lone pair or has a valency of four.
  1 mark · Locate elements on the periodic table
8. Question 1.1 · June 2024 · Paper 2 · Provincial · 2 marks
Various options are provided as possible answers to the following questions. Each question has only ONE correct answer. Choose the answer and write only the letter (A–D) next to the question numbers (1.1 to 1.5) in the ANSWER BOOK, e.g. 1.6 C.
1.1 The process where a solid substance change directly to a gas is called:(2)
1. A Evaporation
2. B Condensation
3. C Sublimation
4. D Melting
Show the memo (1 tick)Memo
1. ✓
  Correct optionSublimation is the change of a solid directly into a gas, without passing through the liquid phase. Evaporation is liquid to gas, condensation is gas to liquid and melting is solid to liquid.
  
  Answer: C
  2 marks · Define matter and atom terms
9. Question 2.1 · June 2024 · Paper 2 · Provincial · 2 marks
Study the list below that shows a variety of substances.

glass; bromine; copper wire; table salt; air; sodium chloride
2.1 Define a pure substance.(2)
Show the memo (1 tick)Memo
1. ✓
  Definition of a pure substanceA substance that cannot be separated into simpler components by physical methods.
  2 marks · Define matter and atom terms
10. Question 1.2 · November 2023 · Paper 2 · Provincial · 2 marks
Four options are provided as possible answers to the following questions. Each question has only ONE correct answer. Choose the answer and write only the letter (A–D) next to the question numbers (1.1 to 1.9) in the ANSWER BOOK, e.g. 1.10 D.
1.2 The chemical properties of an element are determined by the number and arrangement of the element's ...(2)
1. A atoms.
2. B protons.
3. C electrons.
4. D ions.
Show the memo (1 tick)Memo
1. ✓
  Correct optionChemical reactions involve only the electrons (especially the valence electrons): atoms gain, lose or share electrons. The protons fix which element it is, but they do not take part in reactions.
  
  Answer: C
  2 marks · Find protons, neutrons and electrons

Atom Grade 10 videos

Short lessons from South African teachers first. Videos load only when you tap play, to save your data.

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