Chemical Equations — Chapter Summary
Telangana Board · Class 10 · Physical Sciences
Summary of Chemical Equations for Telangana Board Class 10 Physical Sciences. Part of the Telangana Board Class 10 Physical Sciences syllabus.
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Overview
Chemical equations are the symbolic representation of chemical change. A chemical change occurs when new substances are formed with properties completely unlike those of the original substances. Common signs of chemical change include change in colour or state, liberation or absorption of heat, form
Key Concepts
A chemical change produces new substances
A chemical change produces new substances with properties different from the original substances. Such changes may involve heat change, gas evolution,
Reactants are the substances that undergo
Reactants are the substances that undergo chemical change, and products are the new substances formed after the reaction.
A chemical equation is the symbolic
A chemical equation is the symbolic representation of a chemical change. Reactants are written on the left side of the arrow and products on the right
A skeleton equation is an unbalanced
A skeleton equation is an unbalanced chemical equation containing molecular formulae of the substances.
A balanced chemical equation has
A balanced chemical equation has the same number of atoms of each element on both sides. Only coefficients may be changed, not the formulae. Coefficie
Learning Objectives
- Identify chemical changes using observable signs such as heat change, gas evolution, and precipitate formation.
- Write chemical reactions in word form and in symbolic form using chemical formulae.
- Distinguish between reactants and products in a chemical equation.
- Understand why chemical equations must be balanced according to the law of conservation of mass.
- Balance chemical equations using the trial and error method.
Frequently Asked Questions
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Sources & Official References
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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Formula Sheet
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