Chemistry acids, bases and salts revision cards

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  • Created by: Gigamber
  • Created on: 14-10-15 09:06
Acids
Substances with a pH of less than 7. Acidic solutions turn blue litmus paper red
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Bases
Substances that can react with acids and neutralise them to make a salt and water.
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Alkalis
Bases that dissolve in water. Alkaline solutions have a pH of more than 7. They turn universal indicator paper dark blue or purple if they are strongly alkaline, and blue-green if they are weakly alkaline.
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Neutral solutions
Neutral solutions have a pH of 7. They do not change the colour of litmus paper, but they turn universal indicator paper green.
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Neutralisation reactions - Acids
When acids dissolve in water they produce aqueous hydrogen ions, H+(aq). HCl(aq) → H+(aq) + Cl–(aq)
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Neutralisation reactions - Alkalis
When alkalis dissolve in water they produce aqueous hydroxide ions, OH–(aq). NaOH(aq) → Na+(aq) + OH–(aq)
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Acids reacting with bases
acid + metal oxide → salt + water . Acid + metal hydroxide → salt + water
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Acids reacting with reactive metals
acid + metal → salt + hydrogen .
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Salts
Chloride, Nitrate, Sulfate.
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Ammonium salts
Ammonium nitrate, Ammonium phosphate, Ammonium sulfate.
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Soluble salts
All nitrates, Most sulfates, Most chlorides, bromides and iodides, Sodium carbonate, potassium carbonate, Sodium hydroxide and potassium hydroxide.
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Insoluble salts
Lead sulfate, barium sulfate, Silver chloride, silver bromide, silver iodide, lead chloride, lead bromide, lead iodide, Most other carbonates and Most other hydroxides.
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Making an insoluble salt
silver nitrate + sodium chloride → sodium nitrate + silver chloride / AgNO3(aq) + NaCl(aq) → NaNO3(aq) +AgCl(s).
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Other cards in this set

Card 2

Front

Substances that can react with acids and neutralise them to make a salt and water.

Back

Bases

Card 3

Front

Bases that dissolve in water. Alkaline solutions have a pH of more than 7. They turn universal indicator paper dark blue or purple if they are strongly alkaline, and blue-green if they are weakly alkaline.

Back

Preview of the back of card 3

Card 4

Front

Neutral solutions have a pH of 7. They do not change the colour of litmus paper, but they turn universal indicator paper green.

Back

Preview of the back of card 4

Card 5

Front

When acids dissolve in water they produce aqueous hydrogen ions, H+(aq). HCl(aq) → H+(aq) + Cl–(aq)

Back

Preview of the back of card 5
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