Topic 1 - Atomic structure and the Periodic table

Question 1

Radius of an atom

Answer 1

1x10^-10

Question 2

Charge in the nucleus of an atom

Answer 2

Positive

Only protons and neutrons

Question 3

Relative mass of sub atomic particles

Answer 3

Proton 1
Neutron 1
Electron very small

Question 4

Charge of sub atomic particles

Answer 4

Proton +1
Neutron 0
Electron -1

Question 5

Charge of an atom

Answer 5

Neutral

Same amount of protons and neutrons

Question 6

Atomic number shows

Answer 6

Protons + neutrons

Question 7

Atomic number shows

Answer 7

protons

Question 8

What decides the element of something

Answer 8

Amount of protons

Question 9

Isotopes of the same element are

Answer 9

Same number of protons

different number of neutrons

Question 10

Relative atomic mass =

Answer 10

Sum of(isotope abundance x isotope mass number) / sum of abundances of all the isotopes

Question 11

Making bonds involve

Answer 11

giving away , taking or sharing electrons

Question 12

What happens when a metal and non-metal form a compound

Answer 12

Metal atom lose electrons forms positive ions

non-metal gains electrons forms negative ions

Question 13

What bonding occurs between a metal and non-metal

Answer 13

Ionic bonding

Question 14

What bonding occurs between non-metals

Answer 14

Covalent bonding

Question 15

Are there chemical bonds in a mixture

Answer 15

No

Question 16

What are the properties of a mixture

Answer 16

Mixture of the properties in the mixture

Question 17

John Dalton said that atoms were

Answer 17

solid spheres made up of different elements

Question 18

J J Thompson said that atoms were

Answer 18

Ball of positive charge with electrons embedded within it

‘plum pudding model’

Question 19

Ernest Rutherford said that

Answer 19

Mostly empty space
Concentrated positive charge in the nucleus
‘cloud’ of negative electrons surrounds nucleus

Question 20

What made Ernest Rutherford come to his conclusion

Answer 20

Alpha scattering experiment
alpha particles fired at a sheet of gold
some,minor, and major reflections

Question 21

James Chadwick said that atoms

Answer 21

had neutral particles

Question 22

Amount of shells tell you

Answer 22

period

Question 23

Electrons in the outer shell tells you

Answer 23

group number

Question 24

What was wrong with early versions of the periodic table

Answer 24

Elements place in relative atomic mass
didn’t account properties of elements
Missing elements/elements in the wrong group

Question 25

Mendeleev's version of the periodic table

Answer 25

Mainly in order of atomic mass but switched order if properties were similar Left gaps so elements with similar properties were in the same group Places he left gaps in elements that fit these were later discovered

Question 26

Modern periodic table

Answer 26

Increasing atomic number

Question 27

Metals have metallic bonding what are their properties

Answer 27

Strong malleable Good conductors of heat/electricity high boiling/melting points

Question 28

Properties of transition metals

Answer 28

more than 1 ion coloured good catalyst same properties of metals

Question 29

Group 1 trends as you go down

Answer 29

Increasing reactivity Lower melting/boiling points Increasing relative atomic mass

Question 30

Group 1 element reaction with water

Answer 30

Metal hydroxides - compound dissolves in water producing alkaline solutions Hydrogen

Question 31

Group 1 element reaction with chlorine

Answer 31

Metal chloride salts

Question 32

Group 1 element reaction with oxygen

Answer 32

Metal oxide

Question 33

Trends in group 7 going down

Answer 33

Less reactive Higher melting/boiling points Higher relative atomic mass