booklet 1-the periodic table

Question 1

what is an atom

Answer 1

the smallest part of an element that can exist it cannot be divided

Question 2

what is the radius of an atom

Answer 2

1x10-10

Question 3

what does the nucleus contain

Answer 3

the subatomic particles of protons and neutrons

Question 4

what charge does a nucleus have and why

Answer 4

positive as the protons have positive charge and neutrons have no charge

Question 5

the nucleus is where almost all of the what is concentrated

Answer 5

all of the mass

Question 6

what do the shells contain/hold

Answer 6

electrons

Question 7

what charge do electrons have

Answer 7

negative -1

Question 8

electrons have virtually no what

Answer 8

mass

Question 9

mass of proton

Answer 9

1

Question 10

charge of proton

Answer 10

+1

Question 11

mass of neutron

Answer 11

1

Question 12

charge of neutron

Answer 12

0

Question 13

mass of electron

Answer 13

0
or
1/2000

Question 14

charge of electron

Answer 14

-1

Question 15

what charge does an atom have overall and why

Answer 15

no charge equal but opposite charges of protons and electrons balance out

Question 16

what is an ion

Answer 16

a different form of the same element same number of protons and electrons different neutron number

Question 17

why is the atom neutral

Answer 17

opposite and equal charges of the electrons and protons

Question 18

what does the number of protons determine

Answer 18

what sort of atom it is

Question 19

what is the mass number

Answer 19

protons and neutrons

Question 20

what is the atomic number

Answer 20

proton number

Question 21

is mass number top or bottom

Answer 21

top

Question 22

what does the number of protons equal

Answer 22

the number of electrons

Question 23

what is a molecule

Answer 23

two or more atoms chemically bonded together

Question 24

what is a mixture

Answer 24

two or more elements or compounds chemically combined

Question 25

how can mixtures be separated

Answer 25

filtration evaporation distillation chromatography

Question 26

what remains unchanged in a mixture

Answer 26

properties of a substance

Question 27

what is the equation to work out atomic mass

Answer 27

mass number times amount plus mass number times amount over 100

Question 28

what is the density of group one metals like

Answer 28

low density

Question 29

how hard are group one elements

Answer 29

can be cut are soft

Question 30

what do group one metals react to produce

Answer 30

hydrogen gas and a alkaline metal hydroxide

Question 31

what happens as you go down group one

Answer 31

more reactive

Question 32

why are they more reactive as you go down group one

Answer 32

outer electron held onto less tightly by the force of positive pull of nucleus

Question 33

why are group seven metals less reactive as you go down

Answer 33

outer electron that is gained is so more easily

Question 34

what is a halogen atom that has a full outer shell called

Answer 34

halide ion

Question 35

what type of reactions do halide ions take place in

Answer 35

displacement

Question 36

what do halide ions have

Answer 36

coloured vapours

Question 37

compare cl and br

Answer 37

cl2 + 2Br - -> Br2 + 2cl

Question 38

what is the coloured vapour of flourine

Answer 38

yellow

Question 39

what is the coloured vapour of chlorine

Answer 39

green

Question 40

what is the coloured vapour of bromine

Answer 40

red brown

Question 41

what is the vapour colour of iodine

Answer 41

purple

Question 42

how reactive are noble gases

Answer 42

inert dont

Question 43

what sort of gas are noble gasses

Answer 43

colourless

Question 44

how flamable are noble gases

Answer 44

cant be set on fire

Question 45

what is boiling point like on noble gases

Answer 45

increases as you go down

Question 46

what are the properties of typical metals -transition

Answer 46

dense strong shiny conductors of heat n electricity

Question 47

what sort of compounds do transition metals form

Answer 47

coloured compounds

Question 48

what sort of ions do transition metals form

Answer 48

ions with different charges

Question 49

example of a transition metal as a catalyst

Answer 49

haber process making ammonia

Question 50

how dense and boiling points are transition metals compared to group one

Answer 50

higher density an melting points

Question 51

which is stronger transition of group one metals

Answer 51

transition

Question 52

which is more reactive group one or transition metals

Answer 52

group one

Question 53

what did J J Thomson conclude

Answer 53

plum pudding model

Question 54

what was the plum pudding model

Answer 54

positive pudding negative electrons in it

Question 55

when did J J Thomson come up with plum pudding

Answer 55

1897

Question 56

what did rutherford and marsden conduct

Answer 56

alpha particle experiment sheet of gold

Question 57

what did rutherford and marsden conclude and what did they come up with

Answer 57

plum pudding was wrong and the nuclear model was born

Question 58

what was the nuclear model

Answer 58

concentrated positive nucleus with a cloud of negative electrons

Question 59

when was the nuclear model invented

Answer 59

1909

Question 60

what did niels bhors nuclear model realise and when

Answer 60

electrons orbited in shells at fixed distances 1913

Question 61

what did james chadwick discover and when

Answer 61

neutral particles neutrons 1932

Question 62

what were elements arranged in in the early periodic table

Answer 62

atomic mass

Question 63

how were elements arranged in Dobereiners triads

Answer 63

in groups of three

Question 64

when did he arrange them in triads

Answer 64

1817

Question 65

what did he notice about the triads

Answer 65

middle element was the average of the atomic weights of top n bottom elements

Question 66

what did john newlands do with elements

Answer 66

arranged them in order of increasing atomic weight

Question 67

when did john newlands do this

Answer 67

1864

Question 68

but what did newlands not do

Answer 68

leave gaps for undiscovered elements

Question 69

what did dimitri mendeleeve do

Answer 69

he did the same atomic weights as newlands but left gaps for undiscovered elements

Question 70

when did mendeleeve do this

Answer 70

1869

Question 71

what is the modern periodic table arranged in

Answer 71

atomic number - protons