many words

1- colourless = without colour

2- odourless = without smell

3- tasteless = without taste

4- melts = change from solid to liquid

5- boils = change from liquid to gas

6- essential = absolutely (100%) necessary

7- medicine = the treatment of injuries and illnesses by doctors and nurses

8- application = uses

9- combustion = burning

10- inhibits = prevents, or decrease the rate of

11- excluded = kept out of; not allowed to enter

12- rigid = not easy to bend; not flexible; stiff

13- inner = opposite of outer

14- assembly = a number of parts which have been put together to make up one object

15- display = show

16- adjust = change in order to correct or make more suitable

17- image = picture

18- brightness = the amount of light which a source (e.g. a lamp) gives out

19- component = part

20- implement = tool