Groups in the Periodic Table

Question 1

What is group 1

Answer 1

Alkali metals

Question 2

Properties of group 1

Answer 2

Low melting points
Very soft
Form ionic compounds and lose their outer electron very easily so they don’t form covalent bonds

Question 3

How reactive are group 1 metals

Answer 3

Very reactive
More reactive going down

Question 4

What happens when group 1 metals are put in water

Answer 4

They react vigorously
Li - moves around on surface and fizzes
Na and K - they do the sae but also melt and K burns with a lilac flame

Question 5

What is group 7

Answer 5

Halogens

Question 6

What happens as you go down the group of halogens

Answer 6

Melting and boiling points increase
Reactivity decreases as it is harder to attract an electron (shielding)

Question 7

What do halogens look like at room temperature

Answer 7

Cl2 - green gas, toxic
Br2 - red-brown liquid
I2 - Dark grey crystalline solid which gives off a purple vapour when heated

Question 8

How to test for chlorine

Answer 8

Damp blue litmus paper turns red then bleaches white

Question 9

How do halogens react with some metals and hydrogen

Answer 9

Form metal and hydrogen halides

Question 10

What is a halogen displacement reaction

Answer 10

A redox reaction where a more reactive halogen replaces a less reactive one

Question 11

What are group 0 elements

Answer 11

Noble gases

Question 12

Group 0 characteristics

Answer 12

Colourless gases at room temp.
Monatomic
Inert
Non-flammable

Question 13

What happens as you go down group 0

Answer 13

Boiling, melting points, density all increase

Question 14

Uses of noble gases

Answer 14

Argon - filament lamps (stops the hot filament from burning away)
Argon and helium - protects metals that are being welded
Helium - used in airships and balloons as it is less dense than air and non-flammable