C1

Question 1

Proton

Answer 1

Relative mass : 1
Relative charge : +1

Question 2

Neutron

Answer 2

Relative mass : 1
Relative charge : 0

Question 3

Electron

Answer 3

Relative mass : 0
Relative charge : -1

Question 4

1. Dalton

Answer 4

Solid sphere

Question 5

2. JJ Thomson

Answer 5

Plum pudding
- electron

Question 6

3. Rutherford + Marsden

Answer 6

Alpha scattering experiment
- atoms mostly empty space
- positively charged nucleus at centre

Question 7

4. Bohr

Answer 7

Electron shells

Question 8

5. Rutherford

Answer 8

Proton

Question 9

6. Chadwick

Answer 9

Neutron

Question 10

Periodic table top number

Answer 10

Atomic mass
- no. of protons + no. of neutrons

Question 11

Periodic table bottom number

Answer 11

Atomic number
- no. of protons
- no. of electrons

Question 12

How to work out neutrons of element

Answer 12

Atomic mass (top) - atomic number (bottom)

Question 13

Isotope

Answer 13

Same number of protons, different number of neutrons

Question 14

Ion

Answer 14

Charged particle formed when atom/molecule gains/loses electrons

Question 15

1 carbon

Answer 15

meth

Question 16

2 carbon

Answer 16

eth

Question 17

3 carbon

Answer 17

prop

Question 18

4 carbon

Answer 18

but

Question 19

C-C

Answer 19

-ane

Question 20

C=C

Answer 20

-ene

Question 21

simple distillation

Answer 21

seperate liquid from a solution
eg. water from sea water

Question 22

fractional distillation

Answer 22

sperate liquid from a mixture of miscible liquids
eg. water from ethanol and water mix because liquids have different boiling points

Question 23

activation energy

Answer 23

minimum amount of energy that must be availible to reactants for chemical reaction to occur
- kilojoules per mole

Question 24

No. of protons = (atoms)

Answer 24

No. of neutrons

Question 25

Filtration

Answer 25

Separates insoluble solid from a liquid reaction mixture

Question 26

Evaporation

Answer 26

(Quick) separates a soluble salt from a solution (if salt doesn’t decompose)

Question 27

Crystallisation

Answer 27

separates a soluble salt from a solution (if salt decomposes)

Question 28

group 1 elements (3)

Answer 28

“ALKALI METALS” - very reactive, 1 electron in outer shell - soft, low density - form ionic compounds with non metals

Question 29

alkali metals reaction with water

Answer 29

produces hydrogen gas - react vigorously

Question 30

alkali metals reaction with chlorine

Answer 30

produces a salt - react vigorously, form white salts called metal chlorides

Question 31

alkali metals reaction with oxygen

Answer 31

produce a metal oxide

Question 32

group 1 as you go down…

Answer 32

- increase reactivity - lower melting + boiling points - higher relative atomic mass

Question 33

group 7 elements

Answer 33

“HALOGENS” fluorine chlorine bromine iodine

Question 34

group 7 as you go down…

Answer 34

- decrease reactivity - higher melting + boiling points - higher relative atomic masses