Group 7- Unit 1

Question 1

What is the common name for group 7?

Answer 1

Halogens

Question 2

What type of ions do group 7 form?

Answer 2

-1 charge

They gain one electron

Question 3

How do the ions change their name?

Answer 3

Halogens become Halides

Fluorine- Fluoride

Chlorine- Chloride

Bromine- Bromide

Question 4

Why are Chlorine, Fluorine and Bromine in group 7?

Answer 4

They all have 7 electrons in their outer shell

Question 5

What happens to the size of the atoms down group 7?

Answer 5

They get bigger

By one energy level

Question 6

What happens the reactivity of the halogens down group 7?

Answer 6

They get less reactive

Question 7

Why does the reactivity change down group 7?

Answer 7

The outer electrons

Are further away from the nucleus

So it is harder to attract an electron

Question 8

What does displacement mean?

Answer 8

When a more reactive substances

Takes the place of a less reactive susbtance

Question 9

Sodium Chloride + Bromine ->

React or not?

Answer 9

No reaction

Bromine is less reactive than Chlorine

Question 10

Sodium Bromide + Chlorine ->

React or not?

Answer 10

Sodium Chloride + Bromine

Chlorine is more reactive than Bromine

Question 11

Sodium Iodide + Fluorine ->

React or not?

Answer 11

Sodium Fluoride + Iodine

Fluorine is more reactive that Iodine