Group 1- Unit 1

Question 1

Why are Sodium, Lithium and Potassium in group 1?

Answer 1

They all have one electron in their outer shell

Question 2

What happens to the size of the atom at you go down group 1?

Answer 2

They get bigger

By one shell

each row

Question 3

What happens to the outer electron as you go down group 1?

Answer 3

It gets further away

From the nucleus

Question 4

What are the names of the first 3 group 1 elements?

Answer 4

Lithium, Sodium and Potassium

Question 5

What happens to the reactivity of group 1 metals down the group?

Answer 5

They get more reactive

Question 6

Which does the reactivity change down group 1?

Answer 6

The outer electron

is further away from the nucleus

So it is more likely to be lost

Question 7

Why are group 1 called the alkali metals?

Answer 7

They form Metal Hydroxides

When they react with water

Hydroxide are alkali

Question 8

What gas is formed when alkali metals react with water?

Answer 8

Hydrogen

Question 9

What is the test for hydrogen?

Answer 9

Goes pop with a lighted splint

Question 10

How do you know the reactivity of group 1 metals increases?

Answer 10

More gas produced

Small ‘pop’ or explosion

Potassium gives a lilac flame