mixtures

Question 1

a pure substance of only one kind of atom

Answer 1

element

Question 2

two or more substances physically mixed

Answer 2

mixture

Question 3

two or more elements chemically combined

Answer 3

compound

Question 4

to separate magnetic materials from non magnetic materials. what method of separating mixtures is this

Answer 4

magnetic attraction

Question 5

used to separate insoluble solid from a solid liquid mixture

Answer 5

filtration

Question 6

Used to separate a dissolved solid from a solid-liquid mixture

Answer 6

evaporation

Question 7

Used to separate a pure liquid from a solid-liquid or liquid-liquid mixture

Answer 7

Distillation

Question 8

Used to separate more than two liquids in a mixture of miscible liquids

Answer 8

Fractional Distillation

Question 9

Used to separate mixtures of pigments found in inks

Answer 9

chromatography

Question 10

stationary phase in chromatography

Answer 10

filter paper

Question 11

mobile phase in chromatography

Answer 11

water

Question 12

is used to identify the contents of a mixture or to test the purity of a liquid

Answer 12

paper chromatography

Question 13

to separate larger solids from smaller ones

Answer 13

sifting

Question 14

pouring off a less dense top liquid layer

Answer 14

decanting

Question 15

Rf formula

Answer 15

distance travelled by spot / total distance of solvent

Question 16

Process of chromatography

Answer 16

take a chromatogram paper
draw a base line with pencil
place spots by the help of a dropper
dry the chromatogram paper
place chromatogram paper in a beaker containing the solvent
calculate Rf value and observe solubility

Question 17

if the spot travelled more so it means

Answer 17

the solubility is more

Question 18

if the spot travelled less so it means

Answer 18

the solubility is less

Question 19

Which method id used to separate a solid from a liquid

Answer 19

filtration

Question 20

Which method id used to separate a solid from a solution

Answer 20

evaporation

Question 21

Which other method id used to separate a solid from a solution

Answer 21

crystallisation

Question 22

Which method id used to separate a solvent from a liquid

Answer 22

simple distillation

Question 23

Which method id used to separate liquids from each other

Answer 23

fractional distillation

Question 24

Which method id used to separate different substances from a solution

Answer 24

chromatography

Question 25

Difference between compounds and mixture

Answer 25

compounds are formed with the combination of two or more elements and their chemically joined while mixtures are formed when compounds or elements are mixed together and their physically joined.
Components of compounds cannot be separated physically while components of mixtures can be separated physically.
compounds are always homogeneous mixtures by nature while mixtures can be homogenous or heterogeneous by nature.
compounds show their own characteristics while mixtures don’t.