Covalent Bonding

Question 1

What is a covalent bond?

Answer 1

The bonding between two non-metals

Question 2

What are some properties of giant covalent compounds?

Answer 2

1} They have a high melting/boiling point
2} Hard
3} Good conductors of electricity

Question 3

What are some properties of simple molecular compounds?

Answer 3

1} Low melting/boiling point
2} Liquid/Gases at room temperature
3} Strong covalent bonds within molecules
4}Weak bonds between molecules

Question 4

Explain Diamond’s structure and their bondings?

Answer 4

Diamond has a giant covalent structure, where each carbon atom is bonded with four other carbon atoms tetrahedrally with strong forces of attraction between the carbon atoms.

Question 5

Explain Silicon-dioxide’s structure and their bondings?

Answer 5

Silicon-dioxide has a giant tetahedral structure where each silicon atom is bonded to four other oxygen atoms, and each oxygen atom is bonded to only two silicon atoms, by strong covalent bonds.

Question 6

Explain Graphite’s structure and it’s bondings?

Answer 6

Graphite has a giant covalent structure where it’s layers are arranged in hexagonal layers and they both have weak forces of attraction between the layers.

Question 7

Examples of simple covalent structures?

Answer 7

1} Chlorine
2} Oxygen
3} Methan [CH4]
4} Hydrogen
5} Ammonia[NH3]

Question 8

Difference between diamond and graphite?

Answer 8

1} Diamonds does not conduct electricity whereas graphite conducts electricity
2} Diamond is hard whereas graphite is soft and slippery

Question 9

Similarities between Diamond and Silicon-Dioxide?

Answer 9

1} They have high densities
2} High melting point
3} Very hard

Question 10

Uses of diamond?

Answer 10

It is hard therefore, it is used for cutting tools or drill bits

Question 11

Uses of graphite?

Answer 11

1} Soft and slippery = Used as a lubricant
2} Good conductor of electricity = Used as electrodes