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chemistry > Chemical Changes > Flashcards

Chemical Changes Flashcards

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1
Q

Bronze

A

Alloy copper and tin

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2
Q

Brass

A

Alloy copper and zinc

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3
Q

Gold

A

Can be alloyed with silver, copper and zinc

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4
Q

Percentage purity gold

A

Carat number/24 x100

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5
Q

Steel

A

Alloy iron, carbon and other materials

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6
Q

High carbon steel

A

Strong but brittle

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7
Q

Low carbon steel

A
  • softer, more maleable

- car body work

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8
Q

Stainless steel

A

Steel with chromium and nickel

  • hard, restistant to corrosion
  • cutlery
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9
Q

Aluminium alloy

A

Low density

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10
Q

Base

A

Any substance thatreacts with an acid to form salt and water only

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11
Q

Potassium reaction

A

With cold water

-fizzig and lilac flame

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12
Q

Sodium reaction

A

Reacts with sold water

-moves spins, melt into ball, dissolve

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13
Q

Lithium reaction

A

Reacts with cold water

-fizzes, dissolves into water

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14
Q

Calcium reaction

A

Reacts with cold water

-bubbles violently, white precipitat

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15
Q

Magnesium

A

Reacts hot water

-bubbles come of

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16
Q

Zinc

A

Reacts with acid

-fizzes, white precipitate

17
Q

Iron reaction

A

Reacts with hot acid

-fizzes, white precipitate

18
Q

Lead reaction

A

Doesnt react with acid and water

19
Q

Metal + acid

A

Salt + hydrogen

20
Q

Metal oxide + acid

A

Salt + water

21
Q

Metal hydroxide + acid

A

Salt + water

22
Q

Metal carbonate + acid

A

Salt + water + carbon dioxide

23
Q

Hydrochloric acid salt name

A

Chloride

24
Q

Sulphuric acid salt name

A

Sulphate

25
Q

Nitric acid salt name

A

Nitrate

26
Q

Phosphoric acid salt name

A

Phosphate

27
Q

Ethanoic acid salt name

A

Ethanoate

28
Q

Metals that react with acid to produce salt and hydrogen

A

Magnesium, zinc, iron. + hyrdochloric and sulphuric acid

29
Q

Metal + water

A

Metal hydroxide + hydrogen (oxidation)

30
Q

Thermite reaction

A

Mixture metal powder and metal oxide

31
Q

Methyl orange

A

Red to yellow

32
Q

Phenothalein

A

Colourless to pink

33
Q

Red litmus paper

A

Red- acid and neutral

Blue-alkali

34
Q

Blue litmus paper

A

Red- acid

Blue-alkali and neutral

35
Q

Universal indicator

A

Acid- deep red to light green
Neutral- dark green
Alkali- dark blue to light blue/turquoise

chemistry (14 decks)

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