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Chemical Equations

Telangana Board · Class 10 · Physical Sciences

Flashcards for Chemical Equations — Telangana Board Class 10 Physical Sciences. Quick Q&A cards covering key concepts, definitions, and formulas.

44 questions38 flashcards5 concepts

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38 Flashcards
Card 1Chemical equations

What is a chemical equation?

Answer

A chemical equation is the symbolic representation of a chemical change.

Card 2Reactants and products

What are reactants and products?

Answer

Reactants are the substances that undergo chemical change in a reaction. Products are the new substances formed in the reaction.

Card 3Word equations

Write the word equation for calcium oxide reacting with water.

Answer

Calcium oxide + water → calcium hydroxide.

Card 4Formula equations

Write the chemical formula equation for calcium oxide and water.

Answer

CaO + H2O → Ca(OH)2…

Card 5Exothermic reaction

Why does the beaker become hot when calcium oxide is mixed with water?

Answer

Calcium oxide reacts with water and heat is liberated. This is an exothermic reaction.

Card 6Litmus test

How is the solution formed by calcium oxide and water identified as basic?

Answer

A red litmus paper turns blue, while a blue litmus paper does not change colour. This shows that the solution is basic.

Card 7Precipitation reaction

What observation shows that a chemical reaction has occurred in the sodium sulphate and barium chloride reaction?

Answer

A white precipitate of barium sulphate is formed.

Card 8Skeleton equation

Write the unbalanced equation for sodium sulphate reacting with barium chloride.

Answer

Na2SO4 + BaCl2 → BaSO4 + NaCl…

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Frequently Asked Questions

What are the important topics in Chemical Equations for Telangana Board Class 10 Physical Sciences?
Chemical Equations covers several key topics that are frequently asked in Telangana Board Class 10 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Chemical Equations — Telangana Board Class 10 Physical Sciences?
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.
How many flashcards are available for Chemical Equations?
There are 38 flashcards for Chemical Equations covering key definitions, formulas, and concepts. Use them daily for 10–15 minutes for best results.

Sources & Official References

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

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