Group 1 Elements

Question 1

What are the group 1 elements known as

Answer 1

Alkali metals

Question 2

How do alkali metals react

Answer 2

React with non metals ( especially group 7) to form ionic compounds
- the metal gains a +1 charge from losing an electron
- ionic compounds are white solids that dissolve in water to form a colourless solution

Reacts with water and forms a metal hydroxide and hydrogen

Question 3

How many electrons do their outermost shell have

Answer 3

1

Question 4

What are trends in group 1

Answer 4

Become more reactive as you go down the group:
- as we go down the group, the atoms radius increases meaning the outer most shell and electron gets further away from the nucleus
- the increased distance weakens the attractive force making it easier for the electron to be lost

Increases boiling point as you go up the group

Question 5

Property of group 1 elements

Answer 5

Low density unlike most metals