CBSE · Class 10 · Science · Chapter 1

Chemical Reactions and Equations

Learn how to identify, represent and balance chemical reactions while recognising their major types and effects.

9 lessons 45 min
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Lessons in this chapter

  1. 1Chemical Reactions And EquationsChemistry starts leaving clues everywhere: colour, gas, heat and brand-new substances.
  2. 2Chemical EquationsAtoms refuse to vanish, so every chemical equation has to balance its books.
  3. 3Types Of Chemical Reactions: Combination ReactionSometimes chemistry is simple: several reactants meet and one product walks out.
  4. 4Decomposition ReactionOne substance splits apart, provided heat, light or electricity pays the energy bill.
  5. 5Displacement ReactionA more reactive element shows up and politely removes someone else from the compound.
  6. 6Double Displacement ReactionTwo compounds swap ions, and sometimes one product drops out as a solid.
  7. 7Oxidation And ReductionOxygen changes hands and oxidation and reduction happen as an inseparable pair.
  8. 8Have You Observed The Effects Of Oxidation Reactions In Everyday Life?Rusty metal and stale chips turn out to share one quiet villain: oxidation.
  9. 9Chapter Summary and PracticeEvery reaction type returns for one final check that the chemistry actually makes sense.
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