Group 1:Alkali Metals

Question 1

Which is the most dense?

Answer 1

Rubidium

Question 2

Which one is the most reactive?

Answer 2

Rubidium

Question 3

Describe and explain trend in reactivity of alkali metals:

Answer 3

Reactivity decreases down the group because the outer electron is further away from the nucleus because their is more shielding so it’s easier to loose ( don’t ask it doesn’t make sense xxx)

Question 4

How many electrons are on the outer shell?

Answer 4

1

Question 5

What happens when a alkali metal reacts with water?

Answer 5

The metal floats on the top of the water and moves around quickly fizzing and bubbling then it disappears completely.
> hydrogen is produced aswell as a metal hydroxide.

Question 6

What do alkali metals and non metals react to produce?

Answer 6

White or colourless ionic compounds.
Eg: sodium and chloride

Question 7

What is the word equation for sodium + water ?

Answer 7

Sodium + water > sodium hydroxide+ hydrogen

Question 8

What are the properties of alkali metals?

Answer 8

Soft and easy to cut
Low melting points
Top layer reacts with oxygen in the air to form a metal oxide

Question 9

What is the most reactive element?

Answer 9

Caesium

Question 10

What are the overall trends of the group?

Answer 10

Increased reactivity
Lower melting and boiling points
Higher atomic mass

Question 11

Reaction with group 1 element and water?

Answer 11

Metal+ water> metal hydroxide+ hydrogen