bonding

Question 1

covalent radius

Answer 1

half the distance between the nuclei of two atoms which are joined by a covalent bond

Question 2

electronegativity

Answer 2

measure of the ability of an atom involved in a chemical bond to attract electrons

Question 3

ionisation energy

Answer 3

the energy required to remove one mole of electrons from one mole of gaseous atoms or ions

Question 4

atoms that are covalent molecular bonded

Answer 4

H, N, O, F, Cl

Question 5

molecular solids

Answer 5

P, S

Question 6

monoatomic gases

Answer 6

He, Ne, Ar

Question 7

metallic lattice

Answer 7

Li, Be, Na, Mg, Al, K, Ca

Question 8

covalent network

Answer 8

B, C, Si

Question 9

what gives a molecule a higher BP

Answer 9

more mass, more e-, more LDFs, more energy required, higher MP BP

Question 10

poly atomic molecules

Answer 10

P4, S8, C60

Question 11

difference in electronegativity for a non polar molecule

Answer 11

less than 0.5

Question 12

difference in electronegativity for a polar molecule

Answer 12

0.5-2.1

Question 13

difference in electronegativity for an ionic molecule

Answer 13

more than 2.1

Question 14

across a period covalent radius….

Answer 14

decreases- positive charge on nucleus increases, increased attraction for negative electrons

Question 15

down a group covalent radius…….

Answer 15

increases, number of electron shells increases, increased shielding

Question 16

across a period electronegativity….

Answer 16

increases- positive charge on nucleus increases and size of atom decreases

Question 17

down a group electronegativity….

Answer 17

decreases- atomic size increases, more electron shells means more screening from the nucleus

Question 18

down a group first ionisation energy…

Answer 18

decreases

Question 19

across a period first ionisation energy….

Answer 19

increases

Question 20

lithium

Answer 20

metallic

Question 21

sodium

Answer 21

metallic

Question 22

potasium

Answer 22

metallic

Question 23

beryllium

Answer 23

metallic

Question 24

magnesium

Answer 24

metallic

Question 25

calcium

Answer 25

metallic

Question 26

aluminium

Answer 26

metallic

Question 27

hydrogen

Answer 27

covalent molecular

Question 28

nitrogen

Answer 28

covalent molecular

Question 29

oxygen

Answer 29

covalent molecular

Question 30

phosphorus

Answer 30

covlent molecular solid

Question 31

sulfur

Answer 31

covalent molecular

Question 32

carbon

Answer 32

covalent network

Question 33

flourine

Answer 33

covalent molecular

Question 34

chlorine

Answer 34

covalent molecular

Question 35

boron

Answer 35

covalent network

Question 36

silicon

Answer 36

covalent network

Question 37

helium

Answer 37

monoatomic

Question 38

neon

Answer 38

monoatomic

Question 39

argon

Answer 39

monoatomic

Question 40

4 steps to writing a complex redox equation

Answer 40

1. make sure all atoms are balanced
2. add water to balance oxygen atoms
3. add h+ ions to balans H
4. add electrons to balance charge on each side

Question 41

what is a standard solution

Answer 41

a solution with an accurately known concentration