Revision For Test Wednesday 8th March 2023

Question 1

What is a single layer of graphite called?

Answer 1

Graphene

Question 2

Why is the structure of a diamond so strong?

Answer 2

Because it has many covalent bonds

Question 3

Why can some structures conduct electricity?

Answer 3

Because it has delocalised electrons that can pass between layers. The electrons can carry the charge.

Question 4

How many millimetres in 1 m

Answer 4

1000 mm

Question 5

How many metres in 1 mm

Answer 5

0.001 m

Question 6

Explain the differences between silicon dioxide and diamond

Answer 6

Silicon dioxide contains silicon and oxygen atoms instead of carbon has a similar structure to diamond

Question 7

Name the three types of chemical bonding

Answer 7

ionic, covalent, metallic

Question 8

Which four groups are more likely to make ions

Answer 8

One, two, six and seven

Question 9

In metals are all atoms the same?

Answer 9

Yes, in metals, all atoms are the same

Question 10

What is a monomer?

Answer 10

One molecule

Question 11

What is a polymer?

Answer 11

A long chain of monomers

Question 12

What is the state symbol for solid, liquid, gas and solution?

Answer 12

Solid equals S liquid equals L gas equals G solution equals Aq

Question 13

What is the formula for iron oxide?

Answer 13

FeO

Question 14

What is the formula for iron hydroxide?

Answer 14

Fe(OH) (Squared)

Question 15

What are some similarities between diamond and graphite?

Answer 15

Both are forms of carbon both have a single covalent bonds both have many atoms

Question 16

What are some differences between diamond and graphite?

Answer 16

Graphite has flaxseeds conducts electric electricity. Each carbon has three forms of covalent bonds. Where is the diamond is a tetrahedral structure. Each carbon atom forms four covalent bonds does not conduct electricity.

Question 17

How many carbon atoms are in a Buckminsterfullerene

Answer 17

60 carbon atoms

Question 18

Are carbon nanotubes strong

Answer 18

Yes carbon nanotubes are strong

Question 19

Does carbon nanotubes conduct electricity?

Answer 19

Yes, carbon nanotubes do conduct electricity

Question 20

Can graphite conduct, heat and electricity

Answer 20

Yaa Graphite can conduct, heat and electricity

Question 21

Why are some alloys harder than other pure metals?

Answer 21

Some alloys are harder than other pure metals, because the particles are differently sized, and therefore cannot slide across each other as easily

Question 22

Why does some substances have low boiling points?

Answer 22

This is primarily because of the weak intermolecular forces

Question 23

Why do some substances not conduct electricity?

Answer 23

Some substances, not conduct electricity as they do not have any free electrons

Question 24

What happens to the intermolecular forces when a liquid turns into a gas?

Answer 24

The forces of attraction become less as the particles gain energy and move about more