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Chemistry GCSE > Acids Bases And Salts > Flashcards

Acids Bases And Salts Flashcards

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1
Q

Everyday acids

A

Lemon juice, vinegar, soft drinks

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2
Q

What do acids do when dissolved in water

A

Release positively charged hydrogen ions

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3
Q

Properties of acids

A

Corrosive, conducts electricity, sour taste

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4
Q

What do soluble bases (.i.e alkalis) do when dissolved in water

A

Release hydrogen ions

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5
Q

Properties of bases

A

Conducts electricity, bitter, slippery, corrosive

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6
Q

Everyday example of bases

A

Chalks, soap, cleaning products

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7
Q

What is a indicator

A

A chemical that gives a colour change in acidic, alkaline, and neutral solutions

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8
Q

Colour of phenolphthalein in acid

A

Colourless

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9
Q

Colour of phenolphthalein in alkali

A

Pink

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10
Q

Colour of phenolphthalein in neutral

A

Colourless

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11
Q

Colour of methyl orange in acid

A

Red

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12
Q

Colour of methyl orange in alkali

A

Yellow

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13
Q

Colour of methyl orange in neutral

A

Orange

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14
Q

What does a pH meter record to

A

Records the pH to two decimal places

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15
Q

A ……. Acid ionises completely in water

A

Strong

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16
Q

A ……. Acid ionises partially in water

A

Weal

17
Q

A ……. Alkali ionises completely in water

A

Strong

18
Q

A ……. Alkali ionises partially in water

A

Weak

19
Q

Acids dissolve in water to produce

A

H+ ions

20
Q

Alkalis dissolve in water to produce

A

OH- ions

21
Q

A concentrated acid contains a …….. number of acid particles dissolved per unit volume

A

Large

22
Q

A dilute acid contains a ……. Number of acid particles dissolved per unit volume

A

Small

23
Q

Neutralisation definition

A

The reaction between an acid and an alkali producing a salt and water

24
Q

What is a salt

A

The compound formed when some or all of the hydrogen ions in an acid are replaced with metal ions or ammonium ions

25
Q

Hydrogen test

A

Apply a lighted splint

Squeaky pop is heard

26
Q

Carbon dioxide test

A

Bubble gas through lime water

Limewater changes colour from colourless to milky white

27
Q

Observations of reactions

A

If gas produced - bubbles of gas produced

If a solid - solid disappears and solution is produced

If solution produced - mention colour

Most acid reactions (except copper oxide + acid, sodium hydrogen carbonate + acid) are exothermic - heat is released

28
Q

Colour of copper (ll) oxide

A

Black solid

29
Q

Colour of copper (ll) carbonate

A

Green solid

30
Q

Colour of hydrated copper (ll) sulfate

A

Blue crystals

31
Q

Colour of copper (ll) salts in solution

A

Blue solution

32
Q

Colour of group 1, group 2, aluminium and zinc compounds

A

White solids and if dissolved go colourless

33
Q

Methods of drying salts

A

Dessicator
Low temp oven
Dry between two sheets of filter paper

Chemistry GCSE (7 decks)

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