Diamond and Silicone Dioxide (Covalent)

Question 1

What is the first property of giant covalent molecules in general?

Answer 1

• • High melting and boiling points.
• Millions of covalent bonds that require a lot of energy to break.
• Are always solids at room temperature.

Question 2

First Covalent molecule: Diamond. What is it made from?

Answer 2

• Made form carbon atoms.

- Each carbon atom forms 4 strong covalent bond.

Question 3

What is the 2nd property of diamond?

Answer 3

• High melting and boiling point.

- Has a huge number of covalent bonds and requires alot of energy to break them to melt diamond.

Question 4

What is the 3rd property of diamond?

Answer 4

• Diamond cannot conduct electricity.

- No free electrons to carry the electrical charge.

Question 5

What is the first property of silicone dioxide? What is it made from?

Answer 5

• • Contains elements silicone and oxygen covalently bonded together.

Question 6

What is the 2nd property of diamond and sillicone dioxide?

Answer 6

• Silicone dioxide has a high melting and boiling point.

- Huge number of strong covalent bonds must be broken and this takes a great deal of energy.

Question 7

What is the 2nd property of diamond and sillicone dioxide?

Answer 7

• Silicone dioxide has a high melting and boiling point.
• Huge number of strong covalent bonds must be broken.
• Needs a great deal of energy.