Scientific Discovery (Chemical ,Medicine)

Question 1

Farmers use pesticides and herbicides to kill pests and weeds. They use fertilisers (like nitrogen, phosphorus and potassium) to promote plant growth.

fertile describes land that can produce a large number of good quality crop

Answer 1

pesticides :/ˈpes.tɪ.saɪd/

a chemical substance used to kill harmful insects, small animals, wild plants and other unwanted organisms:
The pesticides that farmers spray on their crops kill pests but they can also damage people’s health.

# herbicide   ɜː.bɪ.saɪd
a chemical which is used to destroy plants, especially weeds

a substance added to soil to make plants grow more successfully:
artificial / chemical fertilizers * liquid fertilizer * a bag of fertilizer

Question 2

hydrocarbons

Answer 2

a mixture of carbon and hydrogen

Question 3

metalloids

Answer 3

something that can act like a metal

Question 4

urban myth

Answer 4

a commonly told story not based on fact

Question 5

dosage

Answer 5

the amount of medicine you should take

Question 6

compound

Answer 6

a chemical that combines two or more elements

Question 7

polluted location

Answer 7

contaminated site

Question 8

through

Answer 8

via

Question 9

come into contact with

Answer 9

exposure can take place

Question 10

what we eat

Answer 10

the food we consume

Question 11

the idea

Answer 11

the notion

Question 12

toxic

Answer 12

poisonous

Question 13

examining

Answer 13

analysing / assessing

Question 14

potential consequences

Answer 14

possible interactions

Question 15

mixing chemicals may cause a chemical ……

Answer 15

reaction

Question 16

#to make sth white or pale by a chemical process or by the effect of sunlight; to become white or pale in this
#a chemical that is used to make sth become white or pale and as a DISINFECTANT (= to prevent infection from spreading)

Answer 16

Bleach

Question 17

the release of gas

Answer 17

emission

Question 18

the chemicals derived from petrol or natural gas

Answer 18

petrochemicals

Question 19

the chemical added to food

Answer 19

additive

Question 20

opposite of synthetic

Answer 20

organic

Question 21

the different types of synthetic material which can be moulded and shaped to make many products

Answer 21

PLASTICS

Question 22

a form of energy from nuclear power which is dangerous to humans and animals

Answer 22

radiation

Question 23

material with particular physical characteristics:

Answer 23

substance
an organic/chemical substance
What sort of substance could withstand those temperatures?

Question 24

natural remedies

Answer 24

1.a way of dealing with or improving an unpleasant or difficult situation:
There is no simple remedy for unemployment. * There are a number of possible remedies to this problem.
2 a treatment or medicine to cure a disease or reduce pain that is not very serious:
a natural / herbal remedy * an excellent home remedy for sore throats

Question 25

highly
__________

probable
skilled
valued
addictive
unusual
recommended
educated

Answer 25

absolutely
\_\_\_\_\_\_\_\_\_\_\_\_\_
essential
terrible
necessary
crucial
useless
vital
awful
-------------------------
essentially
\_\_\_\_\_\_\_\_\_\_\_
probable
anxious
addictive
controversial
disappointing
overweight
difficult