Types Of Solid - Covalent Network

Question 1

What are the covalent network solids

Answer 1

Graphite (c), Silica (SiO2) and Diamond (c)

Question 2

What are the particles for covalent network solid

Answer 2

Layers of Co2 Atoms

Question 3

What are the attractive forces of covalent network?

Answer 3

Strong Covalent bonds

Question 4

Description of Diamond - include C atoms bonded, arrangement, strength and melting point

Answer 4

made up of co2 atoms, each atom covalently bonded to 4 other atoms, in tetrahedral arrangement which forms a covalent network solid, covalent bonds are strong and requires a large amount of energy to overcome thus very strong and has high melting point

Question 5

Description of Graphite — include C atoms bonded, arrangement, strength and melting point

Answer 5

made up of co2, has 3 other C atoms, trigonometry planar shape and in 2D arrangement, layers of weak forces between them so atoms are easily broken.

Question 6

Explain properties of Graphite

Answer 6

Soft, slippery and the LAYERS can slide thus making it a good LUBRICANT.

Question 7

Silica / Silicon dioxide — include C atoms bonded, arrangement, strength and melting point

Answer 7

Has silicon and oxygen atoms held together by covalent bonds in tetrahedral arrangement so that 3D NETWORK exists

Question 8

Explain for graphite ( each carbon bonded to 3 others what does it mean for the electron?)

Answer 8

Each atom bonded to 3 other means that 1 electron that is delocalised & free to move bc free to move. = carries charge and conducts electricity