Metallic Bonding

Question 1

Provide 5 properties of metals

Answer 1

• lustrous
• conductive
• malleable
• high density
• hard

Question 2

Describe the name of electrons which can move between cations in a metallic lattice structure

Answer 2

Delocalised electrons

Question 3

Describe alloys

Answer 3

Mixing a metals with other metals/non-metals to alter properties

Question 4

Describe substitutional alloys

Answer 4

Atoms used in an alloy are of equivalent size and easily replace one another

Question 5

Provide an example of a substitutional alloys

Answer 5

Sterling silver

Question 6

Describe interstitial alloys

Answer 6

Smaller atoms used in an alloys fit into spaces between larger atoms

Question 7

Provide an example of a interstitial alloy

Answer 7

Steel

Question 8

State 3 ways metals can be modified using heat

Answer 8

1. annealed
2. quenched
3. tempered

Question 9

Describe annealing

Answer 9

Metals are heated until they are red hot and then cooled slowly

Question 10

Describe quenching

Answer 10

Metals are heated until they are red hot and then allowed to cool quickly in cold water

Question 11

Describe tempering

Answer 11

Quenched metals are warmed at low temperatures and cool slowly

Question 12

Provide the name of the metal with the greatest

reactivity

Answer 12

Potassium (K)

Question 13

Provide the name of the metal with the lowest reactivity

Answer 13

Gold (Au)

Question 14

Provide the word equation for a reaction between metal and oxygen

Answer 14

metal + oxygen -> metal oxide

Question 15

Provide the word equation for a reaction between metal and water

Answer 15

group 1 metal + water -> group 1 metal hydroxide + hydrogen

Question 16

Provide the word equation for a reaction between metal and acid

Answer 16

metal + acid -> ionic salt + hydrogen

Question 17

Describe the general difference between metals and transitional metals

Answer 17

Transition metals have an incomplete inner subshell allowing valence electrons to reside in shells other than the outer shell - several oxidation states.

Question 18

State what the block of the periodic table containing transitional metals is referred to as

Answer 18

d-block

Question 19

Provide a social, environmental and economical issue association with ore extraction

Answer 19

1. costs of obtaining and transporting raw materials.
2. destruction of landscape in open-cut mining
3. Indigenous land rights/world heritage sites