2.2: Metal elements

About ...................................................... of the 92 elements that are found naturally on Earth are metals.

• three-quarters

• half

• two-thirds

All metals have high melting and boiling points .

• True

• False

All metals are in the solid-state at 20 °C, except ......................................

• mercury

• galium

• silver

Metal physical property that makes a ringing sound.

• Sonorous

• Malleable

• Ductile

The best conductors of heat are .................................................

• silver and sodium

• copper and gold

• iron and mercury

The best conductors of electricity are ...................................

• platinum and titanium

• iron and aluminum

• copper and silver.

Typical metal property- big forces are needed to break or squash them.

• Strong

• Hard

• Malleable

Typical metal property- it is not easy to scratch them.

• Strong

• Hard

• Malleable

Typical metal property – they feel heavy for their size.

• Strong

• Hard

• High density

Thin metal sheets are bendy.

• True

• False