Chemistry quiz ( Allotropes of carbon)

Question 1

What are allotropes?

Answer 1

Different structural forms of the same element are called allotropes

Question 2

What are molecules?

Answer 2

Molecules are atoms joined by covalent bonds

Question 3

Can molecules be compounds or elements?

Answer 3

Both! Molecules can be compound ( such as water , H2O ) or element (Such as oxygen, O2)

Question 4

What are the 4 types of carbon allotropes?

Answer 4

Fullerenes , Graphene , Graphite , Diamond

Question 5

Is Fullerene simple of or complex molecules?

Answer 5

Simple

Question 6

What Shape is Buckminsterfullerene?

Answer 6

Football

Question 7

What are some properties of fullerenes?

Answer 7

Fullerenes have weak intermolecular forces between molecules and so have low melting point these weak forces also make the soft and slippery.

Question 8

How many carbon atOms is Buckminsterfullerene?

Answer 8

60 carbon atoms

Question 9

Is graphene simple or complex and why?

Answer 9

graphene is complex because it consists of a sheet of carbon atoms with no fixed formula

Question 10

What are some properties of graphene?

Answer 10

Graphene has strong melting point due to thew strong covalent bonds and can conduct electricity due to the delocalized electrons that carry electricity.

Question 11

What is a Giant molecular structure?

Answer 11

Giant molecular structures have huge three-dimensional networks of carbon atoms linked by covalent bonds,

Question 12

Tell me all the properties of Graphite? (5)

Answer 12

Graphite has a high melting point because of many strong covalent bonds that need a lot of energy to be broken. Graphite has three covalent bonds for each carbon atom. This gives graphite a layered structure and means that not all of its electrons are held in covalent bonds. This means it is a good electrical conductor due to the delocalized electrons. weak force’s of attraction allow the sheets of carbon to slide past each other which makes quite soft and useful as a lubricant

Question 13

Tell me all the properties of Diamond? (5)

Answer 13

diamond has a high melting point because of many strong covalent bonds that need a lot of energy to be broken. Diamonds has four covalent bonds for each carbon atom. The carbon atoms are in a tetrahedral arrangement , joined by strong covalent bonds that gives diamond its extreme hardness and this is why it is used to make cutting tools. Graphite has a high melting point because of many strong covalent bonds that need a lot of energy to be broken.