C1

Question 1

What is the relative charge of a neutron

Answer 1

Neutrons relative charge is 0

Question 2

What’s the relative mass of a neutron

Answer 2

The relative mass of a neutron is 1

Question 3

What is meant by isotopes

Answer 3

Isotopes are different forms of an element

They have the SAME PROTONS and DIFFERENT NEUTRONS

Question 4

Why do atoms have no charge

Answer 4

Atoms have the same proton and electron

Question 5

Are the properties of a compound the same

Answer 5

Compounds often have different properties to the original

Question 6

Where are the reactants found

Answer 6

Reactants are found on the left hand side

Question 7

What’s a compound

Answer 7

A compound is a substance that is formed from two or more different elements

Question 8

What’s type of process is needed to separated compounds into elements

Answer 8

You need a chemical reaction to separate compounds to elements

Question 9

Why should you put a lid on the container during a chromatography experiment

Answer 9

A lid helps stop the solvent from evaporating

Question 10

T/ f

When substances are combined in a mixture does their chemical properties change

Answer 10

False the chemical properties of the substance in a mixture are unchanged

Question 11

What’s a solvent front

Answer 11

A solvent front is the point that the solvent in the paper chromatography reaches as it moves up the paper

Question 12

What’s a mixture

Answer 12

A mixture consists two or more. Elements or compound that are combined. NOT CHEMICALLY

Question 13

Why can you not use a pen in chromatography

Answer 13

The line should be drawn in a pencil because the ink from the pen will dissolved into the solvent

Question 14

When can you use filtration to separate a mixture

Answer 14

Filtration can be used when

Question 15

when is crystallisation used to separate a mixture

Answer 15

crystallisation is used to separate a soluble solid from solution

Question 16

why might crystallisation be used instead of evaporation

Answer 16

crystallisation will be used if the salt will break down when heated

Question 17

what equipment do you need for crystallisation

Answer 17

equipment for crystallisation

• evaporating dish
• heat source
• beaker
• flask
• filter paper
• funnel

Question 18

in fractional distillation where is the hottest point

Answer 18

the bottom of the fractional distillation is the hottest point

Question 19

what sort of mixture can a fractional distillation be used to separate

Answer 19

fractional distillation is used to separate mixtures of liquids with a similar boiling point

Question 20

what does the plum pudding model describe

Answer 20

the plum pudding model described atoms being a positive charge with electrons stuck to them

Question 21

describe alpha particles

Answer 21

alpha particles were fired at a thin sheet of god
most went straight
some were deflected
this meant that positive charge couldn’t be spread out evenly as the plum pudding described

Question 22

what did James Chadwick provide evidence for

Answer 22

James Chadwick provided evidence for the existence of neutron with the nuclei of atoms

Question 23

what did Bohr suggest

Answer 23

bohr suggested that electrons orbit around the nucleus is a fixed distance from the nucleus

Question 24

wheres the lowest energy found in an atom

Answer 24

lowest energy is found in the first shell

Question 25

what did Mendeleev discover

Answer 25

Mendeleev discovered

• properties of elements
• relative atomic mass
• ordering elements on periodic table

Question 26

whats a metal

Answer 26

a metal are elements which can form positive ions

Question 27

where are the metals founds on the periodic table

Answer 27

metals are found on the bottom left of the periodic table

Question 28

properties of a metal

Answer 28

Metal

• strong
• good conductors
• high melting/boiling points

Question 29

why do most metals have similar properties?

Answer 29

Most metals have similar properties because they have metallic bonds which causes them to

Question 30

why is it easy for elements at the bottom to lose electrons

Answer 30

its easy for metals at the bottom of the periodic table to lose because they have more shells of electron at the top so their outer electrons are further from the nucleus

Question 31

where are transition metals found

Answer 31

transition metals for found in the centre of the periodic table

Question 32

describe group 1 metals reacting

Answer 32

group one metals will react more vigorously with wateror oxygen or group 7 elements

Question 33

what sort of compound do halogens form with non metals

Answer 33

halogen reacting with non metals forms simple molecular compounds
they contain covalent bonds (shared electrons)