Metals Flashcards
Metals can be either what or what
Ferrous or non ferrous
Ferrous metals contain what
Iron
Do non ferrous metals contain iron
No
Both ferrous and non ferrous metals are divided into what
Pure metals and alloys
A pure metal is a what and give examples
An element, eg - iron, copper, gold - unalloyed (mixed) with another substance
Metals are among our most………..resources
Valuable
Thousands of years ago people used metals such as copper and iron to make what
Weapons and everyday objects
Where did the word ferrous derive from
from the Latin term “Ferrum” which means “containing iron”, thus ferrous metals contain iron and non ferrous metals do not.
Ferrous metals may be what
pure iron, like wrought iron, or they may be alloys of iron and other elements
Is steel a ferrous metal or a non ferrous metal and why
Steel, being an alloy of iron and carbon, is therefore a ferrous metal.
The iron in ferrous metals cause the metal to what
Rust, unless painted or oiled often or galvanise it
Ferrous metals are often…….
Magnetic
Common ferrous metals include what
The various irons and steels
Common non ferrous metals include
aluminium, tin, copper, zinc, and brass, an alloy of copper and zinc. Some precious metals such as silver, gold, and platinum are also non-ferrous.
The five most used metals are what
Iron Aluminium Copper Zinc Manganese
Properties of metals
The general physical properties of metals are:
They are hard and strong.
They are solids at room temperature (Except for Mercury).
They have a shiny lustre when polished.
They make good conductors of heat.
They make good conductors of electricity.
They are dense. Malleable and Ductile.
The properties of metals make them suitable for different uses in daily life:
Copper
Copper is a good conductor of electricity and is ductile. Therefore Copper is used for electrical cables
The properties of metals make them suitable for different uses in daily life:
Gold and silver
Gold and Silver are very malleable, ductile and very unreactive. Gold and silver are used to make intricate jewellery which does not tarnish. Gold can also be used for electrical connections.
The properties of metals make them suitable for different uses in daily life:
Iron and steel
Iron and Steel are both hard and strong. Therefore they are used to construct bridges and buildings. A disadvantage of using Iron is that it tends to rust, whereas Steel does not.
The properties of metals make them suitable for different uses in daily life:
Aluminium
Aluminium is a good conductor of heat and is malleable. It is used to make saucepans and thin foil, and also aeroplane bodies as it is very light.
What do we use aluminium for
We use Aluminium for the chassis of the friction motor car made in Year 9.
What do we use aluminium for
We use Aluminium for the chassis of the friction motor car made in Year 9.
Properties and uses of aluminium:
First property
Corrosion resistance
Properties and uses of aluminium:
Aluminium is more reactive than…..but despite this, it doesn’t……………..when exposed to…and…..
Iron
Easily corrode
Air
Water
