metallic, covalent and ionic

Question 1

what is a covalent bond

Answer 1

:A shared pair of electrons between two non-metals.

Question 2

what is an ionic bond

Answer 2

the forming of ionic bonds is between metals and non metals

Question 3

what is a metallic bond

Answer 3

The bonds present in metals between the positive metal ions and negatively charged electrons

between metals-positive metal ions, negative delocalised electrons

Question 4

what are the 4 state symbols

Answer 4

aq
s
l
g

Question 5

what force is in covalent bonding

Answer 5

intermolecular forces

Question 6

what is the force in ionic bonding

Answer 6

electrostatic force

Question 7

def. intermolecular

Answer 7

The forces which exist between molecules. The strength of the
intermolecular forces impact physical properties like boiling/melting point.

Question 8

def. electrostatic force

Answer 8

The strong forces of attraction between oppositely charged ions.

Question 9

what are the 3 covalent structures

Answer 9

simple molecules
large molecules
giant covalent

Question 10

describe simple molecular (covalent)

Answer 10

has covalent bonds and has weak intermolecular forces of attraction

Question 10

describe simple molecular (covalent)

Answer 10

has covalent bonds and has weak intermolecular forces of attraction

Question 11

describe giant covalent

Answer 11

has strong covalent bonds

Question 12

examples of giant covalent

Answer 12

graphite
diamond
silicon dioxide
graphene

Question 13

examples of simple covalent

Answer 13

(normally gases)
halogens, cl2, I2
water, oxygen, methane, nitrogen

Question 14

what is an alloy

Answer 14

a mixture of a metal with atoms of another element

mixture of 2 or more metals

Question 15

why do metals have high boiling/melting points

Answer 15

electrostatic force of attraction between positive and negative metal ions and delocalised electrons is strong and requires a lot of energy to break.

giant structure

Question 16

def. delocalised electrons

Answer 16

free moving electrons

Question 17

what are covalent (simple molecules) melting and boiling points

Answer 17

low melting and boiling bonds arent strong like giant bonds

Question 18

what are the 4 properties in a pure metal

Answer 18

malleable
high melting and boiling points
good conductors of electricity and thermal energy

Question 19

what is an ion

Answer 19

A charged particle formed when when an atom gains or loses electrons

Question 20

what is the structure of diamond

Answer 20

.giant covalent structure
.each CARBON atom is bonded to 4 other carbon atoms
.very strong covalent bonds
doesnt conduct electricity-no free electron in outer shel
hard

Question 21

structure for metallic bonding

Answer 21

metals-malleable, ductile
giant structures
layers of ions slide

Question 22

why are metallic bonds have good conductors

Answer 22

the delocalised electrons can move throughout the metal

Question 23

metallic bonds characterists

Answer 23

high melting and boiling points

consist of metal ions an delocalised electrons

Question 24

properties of giant covalent

Answer 24

``` very hard insoluble in water very string high melting+boiling doesnt conduct electricity(except graphite) solid ```

Question 25

properties of small covalent bonding

Answer 25

low melting+boiling | doesnt conduct electricity-no charged particles

Question 26

graphite properties

Answer 26

``` giant covalent structure bonded to three other carbon atoms very string slide past each other easily(Layers) spare electron becomes delocalised ```

Question 27

what is a polymer

Answer 27

:Large long-chain molecules made up of lots of small monomers joined together by covalent bonds(mononmer)

Question 28

ionic bonding structure

Answer 28

giant lattice structure ions attract each other strong electrostatic forces high melting add boiling solid state dont conduct electricity (only when molten/dissolved in water) free moving

Question 29

graphene properties

Answer 29

strong | conduct electricty

Question 30

what bond is polymers in

Answer 30

covalent

Question 31

polymers properties

Answer 31

Have very large molecules

Question 32

properties of alloy

Answer 32

The different sized atoms distort the layers in the structure, making it harder for them to slide over each other. So alloys are harder than pure metals. 2 different metals