Purity

Question 1

meaning of pure

Answer 1

substance made up of a single element or compound

Question 2

pure substances have a …………

Answer 2

sharp and specific melting point

Question 3

impure substances…..

Answer 3

melt over a range of time

Question 4

Name equipment used for testing melting points

Answer 4

melting point appartus

Question 5

what are mixtures useful for?example?

Answer 5

alloys

Gold alloys,jewellery-zinc,copper used to strengthen gold

Question 6

meaning of mixture

Answer 6

more than 1 compound present or diff elements that arent part of a single compound