13.1 to 13.4 Water

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

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

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

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

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

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

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

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

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

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

________ and safe water supply is very important to mankind.

________ can be prevented from rusting using the reactivityseries.

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

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

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

________ are a major source of sulfur dioxide.

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

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

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

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

________ is oxidised to carbon dioxide:

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

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

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

A more ________ can be attached to less ________.

________: combustion of fossil fuels containing sulfur compounds.

________ also contain unburned hydrocarbons and carbon monoxide.

________ 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.

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

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

________ and nitrogen are separated from air by fractional distillation.

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

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

incomplete combustion of fossil fuels e.g

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

combustion of fossil fuels containing sulfur compounds

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

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

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

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

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