C10 metals

Question 1

Malleable

Answer 1

Metals are very malleable as they can be beaten into thin sheets or different shapes

Question 2

Metals

Answer 2

An element that is shiny, conducts heat and electricity, malleable and ductile. They usually have high melting points and boiling points and high densities

Question 3

Metallic bond

Answer 3

An electrostatic force of attraction between the mobile ‘sea’ of electrons and the regular array of positive metal ions within a solid metal

Question 4

Alloy

Answer 4

A metal made by mixing two or more molten metals together

Question 5

Reactivity series

Answer 5

An order of reactivity, giving the most reactive metal first, based on results from experiments with oxygen, water and dilute hydrochloric acid

Question 6

Rust

Answer 6

Iron oxide found on the surface of iron or steel. The conditions necessary for rusting to take place at the presence of oxygen and water. An oxidation process.

Question 7

Sea of electrons

Answer 7

The positive metal ions in a giant structure surrounded by valence electrons that are not attached to any particular ion. They are able to move freely and allow the metal to conduct electricity and also allow the layers of ions to be malleable.

Question 8

Steel

Answer 8

An alloy of iron and carbon

Question 9

Flame tests

Answer 9

Different metal compounds produce characteristic colors in a flame

Question 10

Cation

Answer 10

A positive ion

Question 11

Anion

Answer 11

A negative ion

Question 12

Precipitate

Answer 12

A solid formed when two solutions are mixed.

Question 13

The hydrogen line

Answer 13

Above: metals displace hydrogen with increasing vigor
Below: metals don’t react with acid

Question 14

The carbon line

Answer 14

Above: metals can only be extracted by electrolysis
Below: metal oxides can be reduced with carbon or carbon monoxide

Question 15

Displacement reaction

Answer 15

A reaction in which a more reactive element displaces a less reactive element from solution

Question 16

Smelting

Answer 16

the process in which metals can be extracted from their ores . It often involves heating a crushed metal ore with carbon

Question 17

How does the blast furnace work

Answer 17

1) coke, limestone and iron ore added to top of the furnace. Coke contains carbon and burns up hot air to produce carbon monoxide. Carbon dioxide reacts with air to produce more carbon dioxide. It acts as a reducing agent (takes away oxygen from iron oxide). Limestone removes the impurities and breaks down to give calcium oxide, which reacts with the silica in the molten iron to produce slag

Question 18

Sacrificial protection

Answer 18

when a more reactive metal is used to ensure a less reactive metal is not oxidized, preventing rust