Structure 2.3

Question 1

Process of removing electrons from metals is …thermic

Answer 1

Endothermic

Question 2

Do metals or nonmetals require more energy to remove electrons?

Answer 2

Non metals

Question 3

Electrical conductivity caused by

Answer 3

Movement of charged particles

Question 4

Why are metals good conductors of electricity?

Answer 4

As current is carried by the delocalised electrons and there is low electrical resistance

Question 5

Why do metals have a low electrical resistance?

Answer 5

Delocalised electrons can move freely

Question 6

Why are metals good conductors of heat?

Answer 6

Delocalised electrons can carry heat, the friction caused by their movement causes the metal to heat up.

Question 7

What is the strength of a metallic bond determined by?

Answer 7

• The number of delocalised electrons
• The charge of the cation
• The radius of the cation

Question 8

Across a period, size

Answer 8

Decreases as electrostatic attraction pulls electrons closer to the nucleus.

Question 9

Metallic bonding is

Answer 9

Very strong due to high melting points

Question 10

Only liquid metal at room temp

Answer 10

Mecury

Question 11

When a series of metals form cations with the same charges, the larger the cation…

Answer 11

The weaker the metallic bond

Question 12

As an atom increases, the attraction between the cation and the delocalised electrons…

Answer 12

Decreases

Question 13

Across a period, what happens to the charge of a cation and the radius of a cation?

Answer 13

Charge increases, radius decreases

Question 14

Malleable

Answer 14

Can be beaten into shape with a hammer

Question 15

Ductile

Answer 15

Can be drawn into a wire

Question 16

Why are metals malleable and ductile?

Answer 16

Close packed layers of cations can slide over each other without breaking, movement of the delocalised electrons are non-directional and random

Question 17

D block elements are all metals - what is the trend with their atomic radius and their melting points?

Answer 17

Atomic radius decreases slightly moving across period, no pattern in melting points

Question 18

Transition metals conductivity

Answer 18

All good conductors of heat and electricity

Question 19

Why are transition metals good conductors?

Answer 19

They have a large number of s and d valence electrons which can delocalise

Question 20

Transition element

Answer 20

Element with a d subshell that is partially filled

Question 21

Process of removing an electron is

Answer 21

Endothermic (higher energy in metals)

Question 22

Transition metal melting points trend

Answer 22

No clear trend, however it is very high compared to the s and p block metals