Groups in the Periodic Table

Question 1

What are the group 1 metals also known as?

Answer 1

Alkali metals

Question 2

List the alkali metals in order of reactivity from least to most reactive.

Answer 2

Lithium, Sodium, Potassium, Rubidium, Caesium and Francium

Question 3

Give 2 physical properties of Group 1 metals.

Answer 3

Very soft, Very low melting points

Question 4

Why are group 1 metals very reactive?

Answer 4

They only have 1 outer shell electron which is very easy to loose and also the larger the atom, the more reactive the metal because the other shells shield the force between the positively charged nucleus and the electrons.

Question 5

Reactions between cold water and an alkali metal makes what?

Answer 5

A Hydroxide and Hydrogen gas

Question 6

What is the chemical test for Hydrogen?

Answer 6

Hold a lit splint over it and if it is hydrogen there will be a ‘squeeky pop’

Question 7

Does reactivity increase or decrease down group 1?

Answer 7

Increase

Question 8

What are group 7 elements also called?

Answer 8

The Halogens

Question 9

What do all group 7 elements exist as?

Answer 9

Diatomic molecules

Question 10

Describe the appearance of Iodine.

Answer 10

Dark grey crystalline solid which gives a dark purple vapour

Question 11

What is the chemical test for chlorine?

Answer 11

It will bleach damp blue litmus paper

Question 12

Does reactivity increase or decrease down group 7?

Answer 12

Decrease