Chemistry B (Bonding)

Question 1

Ionic bonding
Happens between

Answer 1

A metal and a non metal

Question 2

How does ionic bonding form.

Answer 2

The metal transfers electrons to the non-metal forming ions

Question 3

What is a Ion

Answer 3

A charged particle from an atom gaining or losing electons

Question 4

Metals form…
(What kind of ion)

Answer 4

Positive

Question 5

Non metals form…
(What kind of ion)

Answer 5

negative ions

Question 6

Ionic bonding example NaCl

Answer 6

Sodium transfers one electron to chlorine forming Na+ and Cl- ions. The oppositely charged ions are attracted to each other with electrostatic force

Question 7

What is a Giant ionic lattice

Answer 7

The giant structure formed when millions of ions come together

Question 8

Ionic bonding melting point

Answer 8

High melting point as a lot of energy needed to break the ionic bond and the electrostatic force in the giant ionic lattice

Question 9

Electrical conductivity (solid)?
(Ionic bonding)

Answer 9

As a solid it does not conduct electricity because the ions can’t move

Question 10

Electrical conductivity (molten or in solution)?
(Ionic bonding)

Answer 10

Can conduct electricity as the ions are free to move and carry the electrical current through the material

Question 11

Covalent bonding happened between

Answer 11

Two non-metals

Question 12

How does covalent bonding form

Answer 12

Non metals share a pair of electrons

Question 13

Covalent bonding
(Molecule)

Answer 13

Two or more atoms bonded togther

Question 14

Melting point?
(Covalent bonding)

Answer 14

Low melting point as little energy is required to break the weak intermolecular force

Question 15

Electrical conductivity?
(Covalent bonding)

Answer 15

Does not conduct electricity as no free electrons that can move and carry an electrical current

Question 16

Structure of a metal

Answer 16

Layers of positive metal ions in a sea of delocalised electrons

Question 17

Malleable meaning

Answer 17

Able to bend

Question 18

Why are metals malleable?

Answer 18

The layers of of ions can slide over each other

Question 19

Melting point?
(Metallic bonding)

Answer 19

High melting point as a lot of energy is needed to break the metallic bond and electrostatic force between the positive ions and negative electrons

Question 20

Electrical conductivity?
(Metallic bonding)

Answer 20

Can conduct electricity as the sea of delocalised electrons can carry the electrical current through the material

Question 21

What is a Alloy

Answer 21

A mixture of two different metals

Question 22

Why are alloys harder than pure metals?

Answer 22

They have different sized atoms so the layers can not slide over each other

Question 23

State symbols = Aqueous (in solution)

Answer 23

aq