basic chemistry

Question 1

define elements

Answer 1

elements can’t be broken down into simpler substances using simple chemical separation methods

Question 2

define compounds

Answer 2

compounds are substance that contains 2 or more elements that are chemically bonded

Question 3

define mixtures

Answer 3

mixture contains 2 or more substances that are physically combined without any chemical bonds

Question 4

define molecules

Answer 4

molecules contains 2 or more same or different atoms that are chemically bonded

Question 5

define atoms

Answer 5

atoms are the smallest particle in any element

Question 6

state the purity of compounds and mixtures

Answer 6

compounds are pure substances with fixed ratios
mixtures are unpure substances with unfixed ratios

Question 7

state the B.P and M.P of mixtures and compounds

Answer 7

compounds have fixed M.P and B.P
mixtures have unfixed M.P and B.P

Question 8

state the differences between physical and chemical properties of compound and mixture

Answer 8

compounds have unique physical and chemical properties

mixtures have same properties as its components

Question 9

state the differences between the separation techniques for compounds and mixtures

Answer 9

compounds can’t be easily separated by physical methods, only possible through chemical methods

mixtures can be easily separated using physical separation techniques