C3.1 The Periodic Table

Question 0

What did Bunsen and Kirchoff do and when?

Answer 0

In 1859 they found more elements

Question 1

What Dobereiner do and when?

Answer 1

In 1829 he put the element in property groups of 3

Question 2

What did John Newlands do and when?

Answer 2

In 1860 he put the elements in order of increasing mass and groups of 8

Question 3

What did Mendeleev do?

Answer 3

Put the elements in mass order but left gaps

Question 4

When were elements put in proton number?

Answer 4

Early 20th century when subatomic particles were found

Question 5

What is the density of alkali metals?

Answer 5

Low density

Question 6

What group are alkali metals?

Answer 6

Group 1

Question 7

What happens when you react an alkali metal with a non metal?

Answer 7

Makes a white solid that dissolves in water

Question 8

What happens when you react an alkali metal with water?

Answer 8

Hydrogen is made and a hydroxide with dissolves in water to make an alkali solution

Question 9

Explain the reactivity trend in alkali metals?

Answer 9

Reactivity increases group the group as the want to loose an electron and down the group the atom is larger so it’s further from the nucleus with more shielding so the electron is more easily removed

Question 10

Explain the boiling point trend in alkali metals?

Answer 10

The further down the group the lower the MP and BP

Question 11

Name 6 properties of transition metals?

Answer 11

Hard
Durable
Catalysts 
Coloured
Sonorous
Maluble
High BP (except Mercury)
Good conductor

Question 12

Name a use for transition metals?

Answer 12

Glazes for the colour

Question 13

Where are transition metals?

Answer 13

Middle of the periodic table

Question 14

What group are halogens?

Answer 14

Group 7

Question 15

Name 4 properties of halogens?

Answer 15

Toxic- kill bacteria
Non metal
Smell
Brittle

Question 16

What’s special about halogens?

Answer 16

All exist as diatomic molecules

Question 17

What colour is F?

Answer 17

Yellow/colourless

Question 18

What colour is Cl?

Answer 18

Green

Question 19

What colour is Br?

Answer 19

Orange or brown

Question 20

What colour is I?

Answer 20

Grey or black

Question 21

Which halogen is liquid?

Answer 21

Bromine

Question 22

Explain the boiling point trend in halogens?

Answer 22

Further down have higher BP and MP

Question 23

Explain the reactivity trend in halogens?

Answer 23

The further down the group the less reactive as it’s gaining an electron and the atoms are bigger so they are further from the nucleus with more shielding so the incoming electron is less easily gained so less react