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Chemistry · Chapter 2: Word and balanced equations

Year 11 Science · About 16 minutes with activities · Turn your sound on

Chapter 2 · Word and balanced equations
2 H in, 1 H out?atoms can’t vanish
Balanced2 H and 2 Cl on each side

Chapter 2 recap

  • Acid + base → salt + water (neutralisation: H⁺ + OH⁻ → H₂O). Acid + carbonate → salt + water + carbon dioxide (bubbles). Acid + metal → salt + hydrogen (not neutralisation).
  • Naming the salt: metal first, then the acid’s ending. Sulfuric → sulfate, hydrochloric → chloride, nitric → nitrate.
  • Balanced equation: the same number of atoms of each element on both sides. Change only the coefficients, in the simplest whole-number ratio. Leave H and O until last.
  • Next: Chapter 3 · The mole

Two hydrogen atoms go in, one comes out. Where did the other one go?

Chapter 2 · About 16 minutes · sound on

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