Year 7 Metals

What is the chemical symbol for Iron?

• IrN

• Fe

• He

• Li

Answer explanation

Remember, Iron is a ferrous metal.

Notice the link between the word FErrous and the chemical symbol Fe!

An example of a stock form of a metal is...

• A rod

• Bronze

• Tin Snips

• Shear Force

Answer explanation

Metal is available as a stock form in sheet, rod, bar and tube, and it is sold by length, width, thickness and diameter.

Where do we get metals from?

• Stones

• Water

• Ores

• Trees

Answer explanation

Most pure metals come from the earth's crust. They are found in ores, which is a solid material that minerals and metals can be taken from.

Nearly a third of the planet's mass is the element iron and most of that can be found in the planet's core.

A non-ferrous metal contains iron.

• True

• False

Answer explanation

Non-ferrous metals are alloys or metals that do not contain any appreciable amounts of iron.

All pure metals are non-ferrous elements, except for iron (Fe), which is also called ferrite from the Latin ‘ferrum,’ meaning “iron.”

The name of a metal that contains more than one element is...

• Combination

• Mixture

• Alloy

• Multiple

Answer explanation

An alloy is a mixture of two or more elements, where at least one element is a metal. Many alloys are mixtures of two or more metals.

The properties of stainless steel make it a great metal for cutlery because...

• It is shiny

• It is heavy

• It is considered antibacterial

• It is silver in colour

Answer explanation

Stainless steel is the most durable and long-lasting cutlery material, perfect for everyday use. Stainless steel is strong even at high temperatures, resistant to water and is considered antibacterial.

Which material properly means that something is good at resisting wear and scratching?

• Tough

• Malleable

• Brittle

• Hard

Answer explanation

Hardness

The ability of a material to withstand indentation, scratching and wear.

Most metals can be recycled

• True

• False

Answer explanation

Metal can be recycled, which means less metal needs to be mined in the future. Even items made from metal such as batteries, laptops and mobile phones can also be recycled.

What force is used when using tin snips?

• Cutting

• Compressive

• Shear

• Hard

Answer explanation

Shear forces act in different directions and cut across a material, but a huge amount of force is needed to shear through a piece of metal.

If a piece of metal is cut using tin snips , the cut will have been made by a shear force.

What was used to bend the aluminium animal accurately?

• Forger

• Former

• Vice

• Needle File