Group 7 halogens

Question 1

What happens when halogens react?

Answer 1

They gain 1 electron to get a full outer shell, by gaining 1 electron they form a negative ion

Question 2

How are halogens structured in their elemental form?

Answer 2

diatomic molecules

Question 3

What halogen is a pale green gas at room temp?

Answer 3

Chlorine

Question 4

What halogen is a dark grey solid at room temp?

Answer 4

iodine

Question 5

What halogen is a brown liquid at room temp?

Answer 5

Bromine

Question 6

What are spectator ions?

Answer 6

ions that do not change during a reaction

Question 7

What is the general formula for the reaction between a halogen and a metal?

Answer 7

metal + halogen = metal halide

Question 8

What happens in reactions between halogens and metals?

Answer 8

-metal halides are formed
-ionic compounds are formed
-solids are formed
-more reactive halogens will react more violently

Question 9

Why do halogens become less reactive as you go down the group?

Answer 9

-atomic radius and shielding increase
-this means there is a weaker electrostatic attraction between the nucleus and and the electron it is trying to gain
-this means there is more energy required for a reaction to occur.