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Chemical reactions: oxidation

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Lesson outcome

Waxaan qeexi karaa falcelinnada oksaydhaynta, oo ay ku jiraan gubashada iyo mirashada, oo aan magacaabi karaa waxsoosaarka qaar ka mid ah falcelinnada oksaydhaynta.

Introduction

In this lesson: I can describe oxidation reactions, including combustion and rusting, and name the products of some oxidation reactions. Combustion requires fuel, heat and oxygen, and will not happen without one of them. When a substance reacts to combine with oxygen, this is called oxidation.

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Combustion requires fuel, heat and oxygen, and will not happen without one of them. When a substance reacts to combine with oxygen, this is called oxidation. Examples of oxidation are combustion and rusting. One of the products of oxidation is always an oxide, but the other products vary.

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Quizzes

  1. 1. Which of the following best describes an element?

    • A substance made of two or more different types of atoms chemically bonded.
    • Correct answer:A pure substance consisting of only one type of atom.
    • A mixture of two or more substances.
    • A substance that cannot change physical state.

  2. 2. What happens to the total mass of substances during a chemical reaction?

    • It increases.
    • It decreases.
    • Correct answer:It remains the same.
    • It varies depending on the reaction.

  3. 3. A {{}} is a substance made of two or more elements chemically bonded.

    • Correct answer:Compound
    • Mixture
    • Gas
    • Aqueous solution

  4. 4. Why is it important to follow safety protocols in the laboratory?

    • Correct answer:To prevent accidents and injuries.
    • To ensure accurate experimental results.
    • Correct answer:To protect the environment.
    • To speed up experiments.

  1. 1. In an oxidation reaction involving magnesium and oxygen, which of the following is a correct product?

    • Magnesium chloride
    • Correct answer:Magnesium oxide
    • Magnesium hydroxide
    • Magnesium carbonate

  2. 2. What are the three necessary components for combustion to occur?

    • Correct answer:Fuel
    • Light
    • Correct answer:Heat
    • Water
    • Correct answer:Oxygen

  3. 3. What is rusting?

    • The formation of water on a metal surface.
    • Correct answer:The corrosion of iron or steel in the presence of water and oxygen.
    • The melting of iron at high temperatures.
    • The process of painting metal surfaces.
    • The reaction of metals with oxygen to form metal oxides.

What pupils see

The same lesson as a pupil sees it. You can set any section as work on its own.

  • IntroductionPrepare
  • Starter quizActivate · 4 questions
  • Lesson videoLearn
  • Exit quizCheck · 3 questions
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