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All you need to know about Additional Science

All you need to know about Additional Science. Topic 7. 7.1 Acids and alkalis. Acids = H + ions Alkalis = OH - ions Alkalis = soluble bases. 7.2 + 7.3 Salts. 7.2 + 7.3 Salts – metals, bases and alkalis. Metals: Metal(s) + acid(aq)  salt(aq) + hydrogen(g)

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All you need to know about Additional Science

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  1. All you need to know about Additional Science Topic 7

  2. 7.1 Acids and alkalis Acids = H+ ions Alkalis = OH- ions Alkalis = soluble bases

  3. 7.2 + 7.3 Salts

  4. 7.2 + 7.3 Salts – metals, bases and alkalis Metals: Metal(s) + acid(aq) salt(aq) + hydrogen(g) Bases:Acid(aq) + base(aq) salt(aq) + water(l) Alkalis:Acid(aq) + alkali(aq) salt(aq) + water(l) Ionic equation (neutralisation): H++ OH- H2O

  5. 7.3 Salts – solutions Solutions: solution(aq) + solution(aq)  precipitate(s) + solution(aq) Solid precipitate is filtered off and dried

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