Chapter 5 of 7
Revision Notes
Language of Chemistry — Revision Notes
ICSE · Class 7 · Chemistry
Language of Chemistry revision notes for ICSE Class 7 Chemistry: 4 topics in quick points. Part of the ICSE Class 7 Chemistry syllabus.
44 questions36 flashcards5 concepts
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Key Topics to Revise
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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.
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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.
Get complete notes with diagrams and examples
Full NotesKey Concepts
A chemical reaction is a chemicalReactants are the substances that undergoA word equation writes the namesA chemical equation uses symbolsA skeletal equation is an unbalanced
Frequently Asked Questions
What are the important topics in Language of Chemistry for ICSE Class 7 Chemistry?
Key topics in Language of Chemistry include Chemical Reaction and Its Parts, Examples of Chemical Reactions, Characteristics of Chemical Reactions, Conditions Needed for Chemical Reactions. Study these first, then practise questions on each for Class 7 exams.
How should I revise Language of Chemistry for Class 7 exams?
Learn the core ideas first, then work through the 44 practice questions on Language of Chemistry. Revise definitions regularly and use flashcards for quick recall before the exam.
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