Groups In The Periodic Table And Elements, Compounds And Mixtures

Question 1

Element definition

Answer 1

Substance made up of only one type of atom

Question 2

Compound definition

Answer 2

2 or more different elements chemically bonded together

Question 3

Molecule definition

Answer 3

2 or more non metals chemically bonded together

Question 4

Mixture definition

Answer 4

2 or more substances not chemically bonded together

Question 5

What type of boiling/ melting point will a pure substance have?

Answer 5

Fixed

Question 5

What type of boiling/melting point will a mixture have?

Answer 5

Over a range of temperatures

Question 6

Atom definition

Answer 6

Smallest part of a substance that can not be broken down

Question 7

Position of protons

Answer 7

Nucleus

Question 8

Relative mass of a proton

Answer 8

1 amu

Question 9

Charge of proton

Answer 9

+1

Question 10

Position of neutron

Answer 10

Nucleus

Question 11

Relative mass of neutron

Answer 11

1 amu

Question 12

Charge of neutron

Answer 12

0

Question 13

Position of electrons

Answer 13

Shells

Question 14

Charge of electron

Answer 14

-1

Question 15

Relative mass of electron

Answer 15

1/2000 amu

Question 16

Atomic number meaning

Answer 16

Number of protons

Question 17

Atomic number of oxygen

Answer 17

8

Question 18

Mass number definition

Answer 18

Total number of protons and neutrons in an atom

Question 19

Oxygen mass number

Answer 19

15.999

Question 20

Isotope meaning

Answer 20

Atoms of an element with the same number of protons but a different number of neutrons

Question 21

Relative atomic mass definition

Answer 21

Average mass of all the atoms of that element

Question 22

Formula for calculating relative atomic mass

Answer 22

(Mass of isotope x abundance of isotope) + (mass of isotope x abundance of isotope)/ 100

Question 23

How are elements ordered by atomic number in the periodic table

Answer 23

Increasing
Horizontally

Question 24

How are elements arranged in groups

Answer 24

No of electrons on their outer shell

Question 25

How are elements arranged in periods

Answer 25

Same no of shells

Question 26

How to deduce between metal and non metal

Answer 26

Metals conduct heat and electricity, non metals don’t

Question 27

Why do elements in the same group have similar chemical properties

Answer 27

Same no of electrons on the outer shell

Question 28

Why do noble gases not react

Answer 28

Full outer shell

Question 29

Observations of g1 elements reactions with water

Answer 29

Li = effervescence ; solid disappears Na = effervescence into a ball, small spark ; solid disappears K = effervescence, lilac flame ; solid disappears

Question 30

Trend of reactivity in g1

Answer 30

Reactivity increases down the group

Question 31

Trend of reactivity in g7

Answer 31

Decreases down the group

Question 32

Lithium appearance

Answer 32

Black outside, shiny inside Hardest to cut

Question 33

Sodium appearance

Answer 33

Grey outside, shiny, goes dull faster Easier to cut

Question 34

Potassium appearance

Answer 34

Grey, shiny goes dull the fastest Easiest to cut

Question 35

Why do g1 elements get more reactive down the group

Answer 35

FOA between nucleus and outer shell become weaker as shell number increases This means it easier to lose their outer electron

Question 36

Chlorine appearance

Answer 36

Green gas

Question 37

Fluorine appearance

Answer 37

Yellow gas

Question 38

Bromine appearance

Answer 38

Dark red liquid

Question 39

Iodine appearance

Answer 39

Grey solid ball

Question 40

Why do G7 elements become less reactive down the group

Answer 40

FOA between nucleus and outer shell become weaker as shell number increases This means it is harder for them to gain an electron