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Chapter 5 of 7
Syllabus

Language of Chemistry

ICSE · Class 7 · Chemistry

Complete topic list for Language of Chemistry in ICSE Class 7 Chemistry. Key concepts, sub-topics, and what to focus on for board exams.

44 questions36 flashcards5 concepts

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An illustration demonstrating the Law of Conservation of Mass using a simple chemical reaction, showing that the total mass of reactants equals the total mass of products.
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4 Topics · ICSE Class 7 Chemistry

Topics in Language of Chemistry

1

1. Chemical Reaction and Its Parts

  • A chemical reaction is a chemical change in matter that forms one or more new substances.
  • A chemical reaction also involves transfer of energy.
  • During a chemical reaction, atoms rearrange to form products but are neither destroyed nor newly created.
2

2. Examples of Chemical Reactions

  • Hydrogen and oxygen react to form water.
  • Mercuric oxide decomposes on heating to give mercury and oxygen.
  • Potassium chlorate decomposes on heating in the presence of manganese dioxide to give potassium chloride and oxygen.
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3. Characteristics of Chemical Reactions

  • Change of colour can show that a chemical reaction has taken place.
  • Evolution of a gas is a common sign of a reaction.
  • Formation of a precipitate is another sign of a reaction.
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4. Conditions Needed for Chemical Reactions

  • Close contact is needed for many reactions.
  • Some reactions occur only in solution form.
  • Some reactions need heat.

Key Concepts

Central concept: Language of Chemistry in chemistry uses symbols, formulae, word equations, and chemical equations to describe chemical reactions clearly and briefly.

Chemical reactionReactantsProductsWord equationChemical equationSkeletal equationBalanced equationLaw of conservation of matter or mass

Frequently Asked Questions

What are the important topics in Language of Chemistry for ICSE Class 7 Chemistry?
Key topics in Language of Chemistry include Language of Chemistry — Complete Chapter Overview, Flowchart showing how reactants transform into products through a chemical reaction, with energy involvement, Sequence diagram showing how reactants become products through chemical change. These are the concepts ICSE Class 7 examiners draw on most — study them first, then practise related questions.
How to score full marks in Language of Chemistry — ICSE Class 7 Chemistry?
Understand the core concepts first, then work through the 44 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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