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Course: Combined Science 0653 — Chemistry
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Curriculum

Combined Science 0653 — Chemistry

1. Experimental Chemistry

0/19

2. The Particulate Nature of Matter

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3. Formulae, Stoichiometry and the Mole Concept

0/17

4. Electrolysis

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5. Energy from Chemicals

0/6

6. Chemical Reactions

0/21

7. Acids, Bases and Salts

0/16

8. The Periodic Table

0/19

9. Metals

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10. Air and the Environment

0/11

11. Organic Chemistry

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Quiz

Redox – Check yourself

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Redox IGCSE Chemistry check yourself quiz: free practice for IGCSE Chemistry. Work through this Redox IGCSE Chemistry check yourself quiz and get instant feedback on every answer. If you get stuck, review the 6.4 Redox — Notes lesson. More practice: IGCSE Chemistry — all units. Syllabus: Cambridge IGCSE Chemistry 0620 syllabus.

  • Questions count: 7
  • Passing grade: B+
  • Time limit: 10 minutes
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1.
Which statement best describes Reduction?
Which statement best describes Reduction?
Negative electrode – reduction.
Decomposition using electric current.
Donates electrons; is itself oxidised.
Gain of electrons / decrease in oxidation number.
2.
According to the comparison table in this lesson, what is the Oxidation number of Simple ion?
According to the comparison table in this lesson, what is the Oxidation number of Simple ion?
Oxidation number rules
+1
−1
= charge
= overall charge
3.
Which statement best describes Oxidation?
Which statement best describes Oxidation?
Donates electrons; is itself oxidised.
Decomposition using electric current.
Loss of electrons / increase in oxidation number.
Positive electrode – oxidation.
4.
Which key term matches this description: "Charge an atom would have if all bonds were ionic."
Which key term matches this description: "Charge an atom would have if all bonds were ionic."
Oxidising agent
Oxidation number
Oxidation
Reduction
5.
Which step comes first in the sequence covered in this lesson?
Which step comes first in the sequence covered in this lesson?
Up = oxidised
Name the agents
Oxidation numbers
Down = reduced
6.
According to the comparison table in this lesson, what is the Example of Simple ion?
According to the comparison table in this lesson, what is the Example of Simple ion?
Oxidation number rules
SO₄²⁻: S = +6
H₂O
Na⁺ +1, Cl⁻ −1
Na, O₂, Cl₂
7.
Complete the statement: Oxidation is ______ of electrons.
Complete the statement: Oxidation is ______ of electrons.
cathode
Oxidation number
Oxidation
loss
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Part of 6. Chemical Reactions — see every lesson and quiz in this unit.
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