Chemistry In Our Lives

Question 1

Pharmacist

Answer 1

Takes a doctors prescription. He/she also dispenses the medicine

Question 2

Chemist

Answer 2

Is a person who actually manufactures medicine in the factory

Question 3

Pharmacy

Answer 3

Is the building a pharmacist works in

Question 4

Natural materials

Answer 4

Materials not made in the laboratory. Wool and water are examples of natural materials

Question 5

Rubber

Answer 5

A naturally occurring plastic

Question 6

Synthetic materials

Answer 6

Means artificial or man made. Theses materials are made in a laboratory. Examples: Nylon (tights), polyester (shirt), polythene (plastic bags), glass and terylene (crease free clothes), acrylic (yarn), melamine (plastic plates)

Question 7

Plastics

Answer 7

Are a group of materials, either synthetic or naturally occurring that can be shaped when soft and then harden to retain the given shape. Plastics (synthetic) are made from crude oil.

Question 8

Monomers

Answer 8

Simple hydrocarbons are separated from crude oil

Question 9

Polymers

Answer 9

Monomers react together

Question 10

Polythene

Answer 10

Tough waxy plastic used around electrical cables and for plastic bags

Question 11

Polystyrene

Answer 11

Packaging, for drinking cups, also for insulation in cavity walls of houses

Question 12

PVC

Answer 12

Drains and pipes, and the cladding on the walls of houses

Question 13

Non biodegradable

Answer 13

Cannot be broken down by living things such as bacteria and fungi in soil

Question 14

Advantages of plastic

Answer 14

Often lighter, may be cheaper, easy to look after

Question 15

Disadvantages of plastic

Answer 15

Non biodegradable, if we reuse or recycle our plastics, then disadvantage can be overcome

Question 16

Fossil fuels

Answer 16

Formed from the remains of plants and animals that lived millions of years ago e.g. Coal, oil and gas

Question 17

Hydrocarbons

Answer 17

All fossil fuels are made mainly of the elements hydrogen and carbon

Question 18

Methane

Answer 18

Natural gas is mainly methane (CH4)

Question 19

Carbon dioxide

Answer 19

Fossil fuels produce carbon dioxide (CO2) and water (H2O) when burned

Question 20

The gas sulphur dioxide (SO2) is released

Answer 20

On burning of some fossil fuels (coal and oil) which contains sulfur compounds

Question 21

Acid rain

Answer 21

Sulfur dioxide combines with rainwater to form sulfuric acid, causing acid rain

Question 22

Acid rain harm

Answer 22

Kills fish, is harmful to plants and erodes limestone buildings

Question 23

Fuel

Answer 23

A substance that burns in oxygen to produce heat

Question 24

Fire Triangle

Answer 24

For a fire to happen you need fuel, heat and oxygen. A fire can be put out by removing one of these, can use water, sand or carbon dioxide