Chemistry In Our Lives Flashcards
(22 cards)
Chemist
A chemist is a person who actually manufacturers medicine in the laboratory.
Pharmacist
Takes a doctors prescription. He/she also dispenses the medicine.
Pharmacy
A building a pharmacist works
Rubber
A naturally occurring plastic.
Natural materials
Wool, water, silk, crude oil, cotton and fur.
Synthetic material
Artificial or man-made.
,
Synthetic examples
Nylon : tights Polythene : plastic bags Terylene : crease free clothes Acrylic : yarn Melamine : plastic plates Glass : bottles Polyester : shirt
Plastics are made from?
Crude oil
Fossil fuels
Are formed from the remains of plants and animals that lived millions kf years ago. E.g. Coal, oil and gas.
Hydrocarbons
All fossil fuels are made mainly of the elements hydrogen and carbon.
Methane
Mainly natural gas
Fossil fuels produce
Carbon dioxide and water when burned.
Gas sulphur dioxide is realesed on
Burning of some fossil fuels (coal and oil) which contain sulphur compounds.
Acid rain
Sulphur dioxide combines with rainwater to form sulphuric acid causing acid rain.
Acid rain harm
Kills fish, harms plants and erodes limestone buildings.
Fuel
A substance that burns on oxygen to produce heat
Fire triangle : for fire to happen you need
Fuel
Heat
Oxygen
Plastics are made from
chemicals called monomers which are taken from crude oil
Polymers
The monomers react together to make long chains of molecules called polymeres, which then behave like plastics
Plastics are non-biodegradable
Cannot be broken down by living things such as bacteria and fungi in the soil
Advantages of synthetic materials
Often light, may be cheaper and easy to look after
Disadvantages
Non-biodegradable
If we reuse or recycle our plastics then this disadvantage can be overcome.
