giant covalent structures

Question 1

What are macromolecules

Answer 1

Macromolecules are large molecules.

Question 2

what is the definition of a giant covalent structure?

Answer 2

A giant covalent structure is a three-dimensional shape made by atoms which are held by covalent bonds.

Question 3

what are all the atoms bonded to each other by in a giant covalent structure?

Answer 3

All the atoms in a giant covalent stucture are bonded to each other by strong covalent bonds.

Question 4

why do giant covalent structures have high melting and boiling points?

Answer 4

Giant covalent structures have high melting and boiling points because they require a lot of energy to break the covalent bonds between atoms

Question 5

why cant giant covalent structures conduct electricity?

Answer 5

because they dont contain charged particles even when they are molten except for graphite.

Question 6

what are 2 examples of giant covalent structures and what are they made from?

Answer 6

Diamond and graphene and they are both made from carbon atoms only,and silicon dioxide.

Question 7

how many covalent bonds does diamond form and in what structure?

Answer 7

Diamond form 4 covalent bonds in a very rigid giant covalent structure.

Question 8

how many covalent bond does graphene form from each carbon atom and how many delocalised electron does each carbon atom have which graphene is made out of?

Answer 8

Each carbon atom forms 3 covalent bonds to create layers of hexagons.Each carbon atom contains one delocalised(free) electron.

Question 9

what is sand made out of and what is each grain of sand ?

Answer 9

Sand is made out of silicon dioxide(silica) and each grain of sand is one giant structure of silicon and oxygen.