General

Question 1

Explain the low reactivity of noble gases and trend in boiling points

Answer 1

Noble gases have low reactivity because they already have noble gas structure (full outer shell) and the trend in boiling point decreases from helium to argon, but past it it increases

Question 2

Alkali Metals reacting with water

Answer 2

Metal + water = Metal(OH) + Hydrogen (2)

Question 3

State the names of each group on the periodic table

Answer 3

Alkali Metals, Alkali Earth Metals, Transition Metals, metalloid, non-metal, halogens, noble gases

Question 4

How to identify displacement in a halogen displacement experiment

Answer 4

When halogen water is distributed in test tubes, it should present yellow/brown for signs of displacement

Question 5

Why has the ordering of elements changed overtime

Answer 5

Because new discoveries are made and new theories are developed to explain the behaviour of chemicals

Question 6

How are group 1 metals stored and why

Answer 6

In an airtight container with mineral oil. This is to prevent water entering and for the metals to be oxidised

Question 7

Properties of halogens

Answer 7

Goes darker as you go down the group, boiling point increases as you go down.

Question 8

Properties of transition metals and their compounds.

Answer 8

Hard, dense, shiny and malleable and ductile. React with water slowly and can form coloured compounds