Metals / Acids / Salts Flashcards

1
Q

what is the product of metal + acid

A

salt + hydrogen

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2
Q

what does OILRIG stand for

A
oxidised 
is
lost
reduction
is
gained
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3
Q

what is the test for hydrogen

A

light a splint , squeaky pop test

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4
Q

list 3 observations from the test for hydrogen

A

bubbles produced
temperature increase
metal dissolves

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5
Q

what is used to extract metals from metal oxides

A

carbon

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6
Q

word equation for reduction with carbon

A

metal oxide + carbon -> metal + carbon monoxide

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7
Q

what is the exception for carbon reduction and why

A

sodium because it is more reactive than carbon

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8
Q

what is the first step of the producing salt practical

A

measure 25ml of acid using measuring cylinder and pour into beaker then heat until acid is warm

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9
Q

what is the second step of the producing salt practical

A

add copper oxide into beaker until solution dissolves in acid

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10
Q

what is the third and fourth step of the producing salt practical

A

stir mixture with stirring rod

filter mixture using filter and funnel paper

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11
Q

what is the fifth and sixth step of the producing salt practical

A

transfer filtered solution into evaporating dish

evaporate until half of liquid is evaporated

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12
Q

what is the word equation for neutralisation

A

acid +alkali -> salt + water

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13
Q

what happens when a string acid ionises in water

A

all (HCl) acid molecules are broken up and produce lots of hydrogen molecules

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14
Q

how much stronger is pH 1 than pH 2

A

10 times

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15
Q

how much weaker is pH 4 than pH 1

A

1000 times weaker

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