Types of bonding

Question 1

What are the 5 giant covalent structures?

Answer 1

Diamond, graphite, silicone, silicone dioxide and boron

Question 2

What is ionic bonding?

Answer 2

The electrostatic attraction between positive and negative ions

Question 3

What is a covalent bond?

Answer 3

Strong electrostatic attraction between a shared pair of electrons and nuclei of the bond

Question 4

What is metallic bonding?

Answer 4

The electrostatic attraction between positive metal ions and delocalised electrons

Question 5

What are lone pairs?

Answer 5

Pairs of electrons not involved in bonding

Question 6

How are dative bonds drawn?

Answer 6

With an arrow

Question 7

What is a dative covalent bond?

Answer 7

Shared pair of electrons which the bonding pair has been provided by one of the bonding atoms only

Question 8

How do you write about melting point?

Answer 8

1. type of bonding
2. force
3. between _____ particles
4. energy

Question 9

With ion in a period, which ion has the stronger charge?

Answer 9

The ion with the greatest charge

Question 10

With ions in the same group, which ion will have stronger attraction?

Answer 10

The smallest ion

Question 11

How does attraction effect melting point?

Answer 11

The greater the attraction, the greater the melting point

Question 12

What affects the melting point of metals?

Answer 12

Ionic charge and ionic radius of metal cations and number of delocalised electrons per cation

Question 13

How does charge affect melting point of metals?

Answer 13

An atoms with a higher charge (e.g. 3+ vs 1+) has greater attraction

Question 14

How does atomic radius effect melting point?

Answer 14

An atom with a smaller atomic radius will have greater attraction

Question 15

How does number of delocalised electrons affect melting point?

Answer 15

Atoms with more delocalised electrons per cation will have greater attraction

Question 16

What is the bonding inside metallic structures?

Answer 16

Electrostatic attractions between cations and electrons

Question 17

What is the bonding inside ionic structures?

Answer 17

The electrostatic attraction between cations and anions

Question 18

What do you include when writing about conductivity?

Answer 18

1. Type of bonding
2. Mobile charge carriers.
3. Charged particles

Question 19

What is the conductivity of metals?

Answer 19

In a solid, delocalised electrons can move and act as mobile charge carries but when molten, both delocalised electrons and positive metal cations can move so conducts better as liquid

Question 20

What is the conductivity of ionic compounds?

Answer 20

When solid, ions are in fixed positions in lattice and can’t conduct electricity. When molten, the lattice is broke down and ions are free to move and act as mobile charge carriers so can only conduct as liquid

Question 21

What is the conductivity of covalent compounds?

Answer 21

Simple molecular structure consisting of neutral molecules held together by intermolecular forces with no charged particles which can move so cannot conduct

Question 22

How does delocalised electrons affect melting points?

Answer 22

The more delocalised electrons per cation, the higher the conductivity.