Chemistry topic 1.3: Properties of Transition Metals

How are transition elements different from Group 1 metals?

They are harder and stronger.

How do melting points of transition elements compare to Group 1?

They are much higher (except mercury).

How do densities compare?

Transition elements have higher densities.

How does densities reactivity compare to Group 1?

They are much less reactive.

Do transition elements react vigorously with water or oxygen?

No, they react much less vigorously.

What type of ions do transition elements form?

Ions with different charges.

What is special about their compounds?

They are coloured.

What important role do transition elements have in reactions?

They act as catalysts.

What are the properties of chromium?

Lustrous, brittle, hard metal.

What are the properties of manganese?

Hard, very brittle, difficult to melt, easily oxidised.

What are the properties of iron?

Good conductor, rusts easily, strong, ductile.

What are the properties of cobalt?

Malleable, brittle, hard, high melting point.

What are the properties of nickel?

Hard, malleable, ductile, good conductor.

What are the properties of copper?

Highly ductile, conductive, malleable, soft.

What is unique about transition metal ion charges?

They can form multiple charges (e.g. +1, +2, +3, etc.).

Which transition metal is used to decompose hydrogen peroxide?

Manganese oxide.

What is the equation for hydrogen peroxide decomposition?

2H₂O₂ → 2H₂O + O₂

Which metal is used in the Haber process?

Iron.

What is the Haber process equation?

N₂ + 3H₂ ⇌ 2NH₃

Which metal is used in making margarine?

Nickel.

What happens in margarine production?

Hydrogen is added to double bonds (hydrogenation).