Bonding

Question 1

what are positive + negative ions?

Answer 1

-ions -single atoms/groups of atoms
P–form when atoms lose electrons-more protons than electrons
N- form when atoms gain electrons-more electrons than protons

Question 2

what is an ionic bond?

Answer 2

The electrostatic attraction between positively and negatively charged ions

Question 3

What is the structure of a ionic compound?

Answer 3

giant ionic lattice

Question 4

What is the melting of ionic compound and why?

Answer 4

• High melting point
  -strong ionic bonds require a lot of energy to break

Question 5

Conductivity of the ionic compound:when+why?

Answer 5

-When molten and in a solution
- because ions can move

Question 6

Are ionic compounds malleable or soft+why?

Answer 6

-brittle

Question 7

what is a metallic bond?

Answer 7

-the strong electrostatic attraction between sea of negative delocalised electrons and positive metal ions

Question 8

What is the structure of a metallic compound?

Answer 8

-Giant metallic lattice

Question 9

What is the melting point of a metallic compound and why?

Answer 9

• High
  -strong metallic bonds require a lot of energy to break

Question 10

Conductivity of the metallic compound:when+why?

Answer 10

• As a solid+liquid
  -the delocalised electrons can move through the structure

Question 11

Are metallic compounds malleable or soft+why?

Answer 11

-Malleable+ductile
- layers of ions can slide over eachother

Question 12

what is a covalent(simple molecular) bond?

Answer 12

• covalent bonds between atoms
  -weak intermolecular forces between molecules

Question 13

What is the structure of a covalent(simple molecular) compound?

Answer 13

-Simple molecular

Question 14

What is the melting of a covalent(simple molecular) compound and why?

Answer 14

-Low
- weak intermolecular forces require less energy to break

Question 15

Conductivity of a covalent(simple molecular)compound:when+why?

Answer 15

• Do not conduct
  -no free moving charged particles

Question 16

what is a covalent(Giant covalent) bond?

Answer 16

-electrostatic attraction between the negatively shared electrons+bonded nuclei

Question 17

What is the structure of a covalent(Giant covalent) compound?

Answer 17

-Strong covalent

Question 18

What is the melting of a covalent(Giant covalent) compound and why?

Answer 18

• Very high
  -strong covalent bond require a lot of energy to break

Question 19

Conductivity of a covalent(Giant covalent) compound:when+why?

Answer 19

Do not conduct-no free moving charged particles
-Graphite does- delocalised electrons can flow

Question 20

Are covalent(Giant covalent) compounds malleable or soft+why?

Answer 20

-Very hard except graphite-layers can slide-weak forces