period 3 oxides

Question 1

Na with water and observations

Answer 1

Question 2

Mg with water and steam and observations

Answer 2

Question 3

How is P4 stored

Answer 3

in oil or under water because if ignites spontaneously in air

Question 4

sodium with oxygen and observation

Answer 4

Question 5

Mg with oxygen and observation

Answer 5

Question 6

Aluminium with oxygen and observation

Answer 6

Question 7

Silicon with oxygen and observation

Answer 7

Question 8

Phosphorus with oxygen and observation

Answer 8

Question 9

sulfur with oxygen and observation

Answer 9

Question 10

why does aluminium appear to be unreactive with oxygen

Answer 10

there’s a fine layer of aluminium oxide on the surface of the metal preventing collision between aluminium atoms and oxygen molecules. This layer can be removed and then the aluminium will react slowly to form white flakes of aluminium oxide

Question 11

SO3 structure

Answer 11

trigonal planar with a lone pair

Question 12

metal act as

Answer 12

bases

Question 13

simple molecular act as

Answer 13

acids

Question 14

distinguish between 2 oxides

Answer 14

dissolve in water- precipitate or pH meter

Question 15

Na2O with water

Answer 15

Question 16

MgO with water

Answer 16

Question 17

oxides with no reaction with water

Answer 17

Al2O3 and SiO2

Question 18

P4O10 with water

Answer 18

Question 19

SO2 with water

Answer 19

Question 20

SO3 with water

Answer 20

Question 21

which acids dissociate

Answer 21

Question 22

pH of oxides with water

Answer 22

NaOH 12-14
Mg(OH)2 9-10
phosphoric and H2SO3 1
H2SO4 0

Question 23

oxides with acids and bases general idea

Answer 23

swap H+ and metal

Question 24

Al2O3 with alkali

Answer 24

Question 25

rule for most oxide with base

Answer 25

add O 2-

Question 26

P4O10 rule for alkali reaction

Answer 26

add PO4 3-