2 - Matter And Its Properties

Question 1

physical change where the substance undergoes changes without changing its chemical composition

Answer 1

phase transition

Question 2

solid to liquid

Answer 2

melting

Question 3

liquid to gas

Answer 3

vaporization

Question 4

gas to liquid

Answer 4

condensation

Question 5

liquid to solid

Answer 5

freezing

Question 6

solid to gas

Answer 6

sublimation

Question 7

gas to solid

Answer 7

deposition

Question 8

can be measured and observed without changing the materials chemical composition

Answer 8

physical

Question 9

describes a materials possiblity to undergo chemical change

Answer 9

chemical

Question 10

Examples of physical change

Answer 10

colour 
texture 
odor
 solubility 
density 
melting point
 boiling point

Question 11

substance pacific properties that do not depend on the amount of the substance

Answer 11

intensive property

Question 12

properties that do depend on the amount of substance

Answer 12

Extensive property

Question 13

Examples of IP

Answer 13

density 
conductivity 
malleability
luster 
colour 
hardness 
melting point 
temperature 
boiling point

Question 14

Examples of extensive property

Answer 14

mass
weight
volume
length

Question 15

cannot be broken down by physical means

Answer 15

pure substances

Question 16

cannot be simplified any further

Answer 16

element

Question 17

basic unit of an element

Answer 17

atom

Question 18

good electrical and heat conductors
ductile
malleable
metallic luster
opaque
solid at room temperature

Answer 18

metals

Question 19

poor heat and electrical conductors
brittle
non ductile
metallic luster
transparent
solid liquid or gas at room temperature

Answer 19

nonmetals

Question 20

intermediate between metal and nonmetal
can be shiny or dull
excellent semiconductors

Answer 20

metalloids

Question 21

can be broken down into simpler forms

made up of elements that are chemically bonded

Answer 21

compound

Question 22

the fixed proportions of a compound are represented by a __________

Answer 22

chemical formula

Question 23

when two or more elements combine to form a compound they follow a definite composition and proportion

Answer 23

law of definite proportion or constant composition

Question 24

if the components of matter can be separated by physical means, components are not chemically bonded

Answer 24

mixture

Question 25

has uniform consisting composition all throughout | also known as solution

Answer 25

homogeneous mixture

Question 26

homogeneous mixture have 3 types

Answer 26

saturated unsaturated and supersaturated

Question 27

contain maximum amount of solute data given quantity of a solvent can dissolve

Answer 27

saturated

Question 28

having a lesser amount of solute than what the given quantity of solvent can dissolve

Answer 28

unsaturated

Question 29

a solution containing solute that is more than what a given solvent can dissolve

Answer 29

supersaturated

Question 30

has at least two different phases of matter or visible components

Answer 30

heterogeneous mixture

Question 31

heterogeneous mixture has two types

Answer 31

suspensions and colloid

Question 32

have solute particles big enough to settle at the bottom of the mixture and can be alternately filtered to separate the particles through filtration

Answer 32

suspensions

Question 33

intermediate a solution and suspension | exhibits tyndall effect

Answer 33

colloid

Question 34

a phenomenon observed in dispersed colloid particles once light is directed to such mixtures the dispersed solute scattering reflect the light

Answer 34

tyndall effect

Question 35

two immiscible liquids are used the varying densities of the two liquids determine which settles at the bottom or forms a top player

Answer 35

liquid liquid extraction

Question 36

used in collecting a pure liquid from a mixture of liquids through the process of _________ and ________ the components have different_____________ so the liquid with ____ ________ will be collected first

Answer 36

distillation evaporation condensation boiling point

Question 37

each component of solute is isolated based on its different affinities to mobile phase

Answer 37

chromatography

Question 38

difference in affinities

Answer 38

polarities | like dissolves like

Question 39

if a solute is polar it will_________a strongly nonpolar solvent

Answer 39

not dissolve

Question 40

formula for retention factor

Answer 40

migration distance of the substance ------------------------------------------------------- migration distance of solvent front

Question 41

gradient by density techniques employed to collect the _________ from a heterogeneous mixture using the principle of _______________

Answer 41

centrifugation precipitate angular rotation and gravity

Question 42

what do you use to separate two immiscible liquids

Answer 42

separatory funnel

Question 43

what will you use to separate two miscible liquids with enough difference in boiling points

Answer 43

simple distillation

Question 44

what will you use to separate mixture of two or more miscible liquids in which differences in boiling points are less than 25 degrees celsius

Answer 44

fractional distillation

Question 45

what will you use to separate soluble solid from liquid

Answer 45

evaporation

Question 46

what do you use a separate insoluble solid from liquid

Answer 46

filtration

Question 47

insoluble smaller solids from a liquid were normal situation does not work well maybe separated through the use of

Answer 47

centrifugation

Question 48

components with different affinities or solubility to mobile phase and stationary phase may be separated using

Answer 48

chromatography

Question 49

two solids with one part liquid having magnetic properties can be separated using

Answer 49

magnetism