4.1.3 Properties of transition metals

Question 1

Compare Group 1 metals and transition metals

Answer 1

Group 1 metals and transition metals are heat and electricity conductors. They are shiny when polished and form ionic compounds with non-metals.

Transition metals have higher densities and higher melting points than Group 1 metals. They are less reactive and harder than Group 1 metals.

Question 2

State three common characteristics of transition metals

Answer 2

• Ions with different charges
• Coloured compounds
• Catalytic properties

Question 3

What is a catalyst?

Answer 3

A catalyst is a chemical substance that increases the rate of a chemical reaction. It is not used up over the course of the reaction.

Question 4

State the colours of flames observed when lithium, sodium, and potassium burn in oxygen

Answer 4

Crimson-red, Li Yellow-orange, Na Lilac, K

Question 5

Describe the properties of noble gases. Discuss the trend in boiling
point down the group.

Answer 5

Non-metals, gases, low boiling points, unreactive (full outer shell; they don’t easily accept or lose electrons).
The boiling point increases down the group, as the atoms get heavier.