Topic 6 Groups In Periodic Table(Complete)

Question 1

What group are alkali metals in

Answer 1

Group 1

Question 2

What are elements in group 8 or 0 known as

Answer 2

Noble gases

Question 3

Halogens are part of which group in the periodic table

Answer 3

Group 7

Question 4

What are 2 properties of alkali metals

Answer 4

They are soft
Low melting points

Question 5

How does lithium react with water

Answer 5

Will move around and fizz

Question 6

How does sodium react in water

Answer 6

Fizzes and melts in heat of reaction

Question 7

How does potassium react with water

Answer 7

Fizzes and melts in heat of reaction and also burns

Question 8

As you go down elements in group 1 become more/less reactive

Answer 8

More reactive
Means you can make predictions about how other metals will react with water

Question 9

Elements in group 1 have 1 electron/proton on their outer shell and form a +1/-1 charge as an ion

Answer 9

Electron
+1

Question 10

The easier a metal loses its outer electrons the more reactive it is
As you go down group 1 the outer electron gets closer/further from the nucleus

Answer 10

Further
This means the atomic radius is larger and is less attracted to the nucleus so is lost more easily

Question 11

Colour and state of chlorine at room temp is

Answer 11

Green poisonous gas

Question 12

Red-brown liquid at room temp is iodine/bromine

Answer 12

Bromine

Question 13

Iodine at room temp is a

Answer 13

Dark grey crystal solid

Question 14

Trend of elements in halogens as you go down is you get darker colours and higher melting points
Predict after iodine is a dark coloured solid

Question 15

What is the chemical test for chlorine

Answer 15

Hold piece of damp blue litmus paper over it ,if present it will bleach and turn white

Question 16

When halogens react with metals what is formed

Answer 16

Metal halides

Question 17

What happens when a halogen reacts with hydrogen

Answer 17

And hydrogen halide is formed

Question 18

What happens when you add hydrogen halides to water

Answer 18

They are soluble and make solutions acidic
Eg hydrochloric

Question 19

Why are elements in group 0/8 inert in terms of their electronic configuration

Answer 19

Have full outer shells of electrons so are stable

Question 20

Why is helium used in airships and balloons due to its chemical properties

Answer 20

Helium is lower density than air and non flammable

Question 21

Noble gases provide an inert atmosphere

Question 22

as you go down group 0 what 3 things increase

Answer 22

melting point
boiling point
density

Question 23

what happens to reactivity of halogens as you go down

Answer 23

reactivity decreases as it gets harder to extra electron further from the nucleus

Question 24

chlorine+potassium bromide->
Cl + KBr ->

Answer 24

bromine+potassium chloride
Br + KCl

Question 26

What can you say about the reactivity of astatine with other salts and halides

Answer 26

As you go down group 7 gets less reactive and astatine is furthest down so can say it will not displace any other halogens from their salt solution

Question 27

Oxidation Reduction Is Is Loss(of electrons) Gain(of electrons)