13.1 to 13.4 Water

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how is ZnCO3 formed?

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41 Terms

1

how is ZnCO3 formed?

________ is formed when zinc reacts with oxygen and carbon dioxide in the air and protects the iron by the barrier method.

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2

Adverse effects

________: poisonous, combining with haemoglobin in blood and prevents it from carrying oxygen.

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3

Poor sanitation

________ leads to the spread of bacteria and disease as drinking water becomes infected.

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4

Helium

________ is used to fill balloons, argon is used in tungsten light bulbs, krypton is used in lasers for eye surgery.

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5

Pollutes crops

________ and water supplies, irritates lungs, throats and eyes and causes respiratory problems.

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6

calcium chloride

The ________ in the 3rd tube is used to remove any moisture in the air.

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7

Oxygen

________ is used in steel making, welding and in breathingapparatus.

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8

Nitrogen

________ is used in food packaging, the production of ammonia and in the production of silicon chips.

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9

reservoirs

Water is taken from rivers, ________ or underground water sources (groundwater)

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10

noble gases

The ________ are still in the gaseous state at- 200 ºC, leaving a mixture of liquid nitrogen and oxygen.

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11

Clean

________ and safe water supply is very important to mankind.

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12

Iron

________ can be prevented from rusting using the reactivityseries.

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13

Filtration

________ is the process used to remove large insoluble particles by passing the water through layers of sand and gravel filters that trap larger particles.

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14

Anhydrous copper

________ (II) sulfate turns white to blue on the addition of water.

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15

Rust

________ is a chemical reaction between iron, water and oxygen to form the compound hydrated iron (III) oxide (________)

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16

Power stations

________ are a major source of sulfur dioxide.

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17

Cholera

________ and typhoid are examples of bacterial diseases which can arise by the consumption of untreated water.

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18

Food shortages

________ and famine due to a lack of crops which can not grow without a clean water supply.

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19

catalytic converters

Cars are fitted with ________ which form a part of their exhaust systems.

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20

Cobalt

________ (II) chloride turns blue to pink on the addition of water.

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21

Carbon monoxide

________ is oxidised to carbon dioxide:

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22

metal

The oxygen in the air will react with the ________, forming a(n) ________ oxide.

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23

metal catalysts

The ________ are in a honeycomb within the converter to increase the surface area available for reaction.

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24

series of redox reactions

A(n) ________ occurs which neutralises the pollutant gases.

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25

reactive metal

A more ________ can be attached to less ________.

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26

Sources

________: combustion of fossil fuels containing sulfur compounds.

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27

Exhaust gases

________ also contain unburned hydrocarbons and carbon monoxide.

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28

Nitrogen

________ has a lower boiling point than oxygen so it vaporises first and is collected as it rises in the gaseous state to the top of the column.

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29

Adverse effects

________: causes significant damage to the central nervous system, young infants are particularly susceptible to lead poisoning causing brain damage.

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30

Rust

________ can be prevented by coating iron with barriers that prevent the iron from coming into contact with water and oxygen.

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31

Oxygen

________ and nitrogen are separated from air by fractional distillation.

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32

Adverse effects

________: dissolves in rain to form acid rain which causes corrosion to metal structures, buildings and statues made of carbonate rocks, damage to aquatic organisms.

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33

Adverse effects

________: dissolves in rain to form acid rain with similar effects as SO2 as well as producing photochemical smog.

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34

Sources

incomplete combustion of fossil fuels e.g

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35

Adverse effects

poisonous, combining with haemoglobin in blood and prevents it from carrying oxygen

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36

Sources

combustion of fossil fuels containing sulfur compounds

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37

Adverse effects

dissolves in rain to form acid rain which causes corrosion to metal structures, buildings and statues made of carbonate rocks, damage to aquatic organisms

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38

Sources

reaction of nitrogen with oxygen in the presence of high temperatures, e.g

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39

Adverse effects

dissolves in rain to form acid rain with similar effects as SO2 as well as producing photochemical smog

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40

Sources

old water pipes, old paints, petrol in some kinds of racing cars and from very old engines

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41

Adverse effects

causes significant damage to the central nervous system, young infants are particularly susceptible to lead poisoning causing brain damage

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