C3 Ionic bonding, metallic bonding and structure

Question 1

What is an ion?

Answer 1

atom that has either lost or gained electrons

Question 2

What type of elements form ionic bonds?

Answer 2

metals and non-metals

Question 3

What charge ion does group two form?

Answer 3

2+

Question 4

What charge ion does group six form?

Answer 4

2-

Question 5

What force holds oppositely charged ions together?

Answer 5

electrostatic force of attraction

Question 6

Describe the structure of a giant ionic lattice.

Answer 6

alternating positive and negative ions held together by electrostatic force of attraction

Question 7

Why do ionic substances have a high melting point?

Answer 7

lots of energy needed to break the electrostatic force of attraction

Question 8

Can ionic substances conduct electricity when solid?

Answer 8

No

Question 9

Why don’t ionic substances conduct electricity when solid?

Answer 9

ions are in a fixed position and there are no delocalised electrons

Question 10

Under what circumstances can ionic compound conduct electricity?

Answer 10

when molten or dissolved

Question 11

Describe metallic bonding

Answer 11

electrostatic attraction between positive metal ions and delocalised electrons

Question 12

Properties of pure metals

Answer 12

malleable

Question 13

Why are pure metals malleable?

Answer 13

Because each layer of the metal can slide over each other

Question 14

Why are metals good conductors?

Answer 14

Due to the delocalised electrons being able to move throughout the whole structure

Question 15

Why do metals have a high melting and boilong point?

Answer 15

electrostatic force of attraction between the metal ions is strong

so lots of energy is needed to break them

Question 16

What is an alloy?

Answer 16

Mixture of a metal with atoms of another element

Question 17

Why are alloys harder than pure metals?

Answer 17

Different sized atoms disturb the layers preventing them from sliding over eachother