C6 Groups in the Periodic Table

Question 1

What are the physical properties of alkali metals?

Answer 1

1. Low melting and boiling points
2. Very soft

Question 2

Why are group 1 metals so reactive?

Answer 2

They only have one electron in their outer shell so they easily lose it

Question 3

What colour is chorine at room temperature?

Answer 3

A green gas

Question 4

What colour is bromine at room temperature?

Answer 4

Red-brown liquid that gives off an orange vapour

Question 5

What colour is iodine at room temperature?

Answer 5

Grey solid which gives off a purple vapour

Question 6

How do you test for chlorine?

Answer 6

Hold damp blue litmus paper

Question 7

What is the positive test result for chlorine?

Answer 7

White litmus paper

Question 8

What are the properties of group 0 elements?

Answer 8

1. Colourless gases at room temperature
2. Non-flammable
3. Low density

Question 9

What are some uses for group 0 gases?

Answer 9

1. Argon is used in filament lamps because it is non-flammable
2. Argon and Helium protect metals that are being welded by stopping the hot metal reacting with oxygen
3. Helium is used in airships and party balloons as it has a lower density than air so it floats

Question 10

How can you measure the rate of reactions?

Answer 10

1. Precipitation reaction with a black cross
2. Measure the change in mass
3. Measure the volume of gas given off