bonding

Question 1

what is the structure of metallically bonded atoms?

Answer 1

giant lattice

Question 2

what is the structure of ionically bonded atoms

Answer 2

giant lattice

Question 3

what is the structure of simple covalent molecules

Answer 3

small, simple molecules

Question 4

what is the structure of giant covalent molecules

Answer 4

giant covalent structure

Question 5

name two properties of metallic bonded atoms

Answer 5

conduct heat and electricity, malleable, high melting point

Question 6

name two properties of ionically bonded atoms

Answer 6

conduct electricity when liquid, can’t when solid, high boiling point

Question 7

why cant ionically bonded atoms conduct electricity when solid?

Answer 7

Because the ions that carry the charge cannot move in a solid but can in a liquid.

Question 8

name two properties of simple covalent bonds

Answer 8

low melting point, cant conduct electricity

Question 9

name a property of a giant covalent molecule

Answer 9

high melting point and boiling point

Question 10

give an example of a small covalent molecule

Answer 10

oxygen, carbon dioxide

Question 11

give an example of a giant covalent molecule

Answer 11

diamond, graphite

Question 12

explain the process of covalent bonding

Answer 12

between two non metals, atoms share electrons

Question 13

explain ionic bonding

Answer 13

between metal and non metal, metal loses outer shell electron - non metals outer shell is completed

Question 14

what is a fullerene

Answer 14

a molecule made of carbon atoms with hollow shapes

Question 15

why do ionic compounds have a high melting point

Answer 15

strong electrostatic forces that require a lot of energy to break

Question 16

what are electro static forces between

Answer 16

positive and negative ions or protons and neutrons (nucleus)

Question 17

what is an alloy

Answer 17

a mixture of metals and non metals that is very strong because of layers distorted by different sized atoms

Question 18

do metals form positive or negative ions

Answer 18

positive

Question 19

covalent bonds are usually…..

Answer 19

gasses or liquids with low melting and boiling points

Question 20

what forces lie between small covalent molecules

Answer 20

intermolecular forces

Question 21

what are polymers

Answer 21

very large molecules held together by strong covalent bonds

Question 22

why do simple covalent molecules not conduct electricity

Answer 22

the molecules do not have an overall charge

Question 23

give two properties of diamond

Answer 23

very strong, doesn’t conduct electricity

Question 24

why does diamond not conduct

Answer 24

no delocalised electrons

Question 25

give two properties of graphite

Answer 25

slippery, brittle, conducts

Question 26

why is graphite slippery

Answer 26

it has layers that can slide over each other

Question 27

what is graphene

Answer 27

a one atom thick layer of graphite

Question 28

give two properties of graphene

Answer 28

very strong, conducts