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yr 9 exams > chemical equations > Flashcards

chemical equations Flashcards

1
Q

calcium + chlorine

A

Calcium chloride

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2
Q

magnesium + oxygen

A

Magnesium oxide

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3
Q

silver + sulfur + oxygen

A

silver sulphate

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4
Q

mon

A

one

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5
Q

di

A

two

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6
Q

tri

A

three

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7
Q

CO

A

carbon monoxide

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8
Q

CO2

A

Carbon dioxide

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9
Q

SO3

A

sulphur trioxide

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10
Q

HCI

A

hydrochloric acid

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11
Q

what is H2SO4

A

sulfuric acid

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12
Q

NH3

A

Ammonia

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13
Q

H2O

A

water

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14
Q

what is CH3CH2OH

A

Ethanol

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15
Q

CH4

A

Methane

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16
Q

starting chemicals

A

reactants

17
Q

Chemicals you make

A

Products

18
Q

(s)

A

Solid

19
Q

(l)

A

liquid

20
Q

(g)

A

gas

21
Q

(aq)

A

solution

22
Q

2Cu + O2 —-> 2 CuO

A

copper + oxygen ———> copper oxide

23
Q

N2 + 3H2 —-> 2NH3

A

Nitrogen + hydrogen ——–> ammonia

24
Q

Precipitation reactions

A

occur when a solid is produced from two solutions which are mixed together

25
Q

how many atoms in H2O

A

2 x hydrogen
1 x oxygen

26
Q

Mg(OH)2

A

magnesium x 1
oxygen x 2
hydrogen x 2

27
Q

number of elements : (NH4)2SO4

A

nitrogen = 2
hydrogen = 8
sulfur = 1
oxygen = 4

28
Q

total mass of products

A

equals the total mass of reactants

29
Q

law of conversion of mass

A

total mass of products equals the total mass of reactants

yr 9 exams (15 decks)

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