Metals And Non-Metals Flashcards
1
Q
Corrosion
A
Is an undesirable process where by a metal changes to its oxide or some other compound by combining with oxygen from air
2
Q
Rusting
A
Is the corrosion of iron (FE)
3
Q
When metals react with an acid
A
Hydrogen gas is given off
4
Q
Zinc reacts with hydrochloric acid to form
A
Zinc chloride and hydrogen
5
Q
Metals
A
Are usually hard, dense, shiny and have high melting points
6
Q
Malleable
A
Means can be hammered into different shapes
7
Q
Ductile
A
Means can be stretched into wires
8
Q
Unreactive metals
A
E.G. Gold and silver. Can be found in nature
9
Q
Rusting need
A
Water and oxygen
10
Q
Corrosion is prevented using
A
Paint, grease, galvanising, chrome plating
11
Q
Galvanising
A
Is putting a layer of zinc on iron to prevent rusting
12
Q
Bronze
A
Copper and tin
13
Q
Brass
A
Copper and zinc
14
Q
Steel
A
Iron and carbon
15
Q
Solder
A
Lead and tin
