Chem 3 Metals And Non Metals

Question 1

Reaction of metals with o

Answer 1

Metal oxide basic

Question 2

Metals and oxygen trick

Answer 2

Na. M. Cu

Na. K. Vigorously in air
Mg. Zn heating
Cu. Fe prolonged heating
Au. Ag. Don’t react

Question 3

Amphoteric oxides

Answer 3

Al2o3 and naoh is naAlO2 plus water
With zn is na2zn02

Question 4

Metal and water

Answer 4

Metal hydroxide and H2

Question 5

Metal and water truck

Answer 5

Na. K. Ma. Fe. Al

Na. K vigorously
Mg. Hot water
Fe. Al steam
Au. Ag. Don’t react

Question 6

Metal and dilute acid

Answer 6

Metallic salts and h

Question 7

Metal and acid truck

Answer 7

Na. M|g. Al texts normally
Dilut hno3 is oxidizing agent so oxidizes h2 to h2o

Question 8

Aqua Regia

Answer 8

Conc hcl is to hno3 is 3 is to 1
It has nascent chlorine.
Forms chloride with au. Ag

Question 9

Metals and halogen

Answer 9

Normal combination

Question 10

Metals and hydrogen

Answer 10

Normal combination

Question 11

Metal and salt solution

Answer 11

Displacement reaction

Question 12

Metals with strong alkalis

Answer 12

Zn. Al + naoh = na2zno2. NaAlo2 + h2o

Question 13

Non metal and oxygen with trick

Answer 13

Normal combination
Oxides acidic: co2(excess o2) so2
Neutral: co2 limited. H20

Question 14

Non metals with water and acid

Answer 14

Can’t react as can’t donate electron

Question 15

Non metals with halogens

Answer 15

Normal combination

Question 16

Non metals with salts

Answer 16

Displacement
Nabr + cl2 is nacl + br
KI + br2 is kbr + I

Question 17

Non metal with hydrogen

Answer 17

They form hydride

N2 + h2 is nh3. Fe catalyst and 723 to 773k temp. Called haber’s process.

S + h2 is h2s

Question 18

Non metals are good oxidizing agents

Answer 18

Na+cl2 is na+cl- etc

Question 19

Thermite reaction

Answer 19

Fe2o3 + al at 3000C is al2o3 + fe(molten)
Highly exo thermic
It is welding

Question 20

Ionic bond

Answer 20

The transfer of elections from one atom to another

Question 21

Properties of ionic bond

Answer 21

Exists only in solid state
Made of jobs
High melting and boiling points
Good conductor of electricity
Well defined crystalline structure

Question 22

Define minerals

Answer 22

Compounds of metals which are found in earth crust

Question 23

Define ores

Answer 23

Minerals from which metals can be obtained on a large scale profitably.

Question 24

Define gangue or matrix or impurity

Answer 24

Rocky impurities present in ores

Question 25

Prices to extract metals of high reactivity

Answer 25

Electrolysis of molten state
Pure metal
Nacl molten is na+ + cl-

Question 26

Process for metals of medium reactivity

Answer 26

Carbonate: calcination
Sulphide: roasting
Oxide of metal
Reduction to metal(by coke or aluminum)
Purification of metal

Question 27

Process for metals of low reactivity

Answer 27

Concentration by froth flotation
Sulphide ores
Roasting
Hgs+02 is hgo+so2
Cu2s+o2 is cuo+so2
Reduction
Hgo is hg+o
Cuo+ cu2s is cu+ so2
Metal
Refining

Question 28

Types of alloys

Answer 28

Ferrous
Non ferrous
Amalgam(hg)

Question 29

Ferrous alloys trick

Answer 29

SaMaN
Stainless steel fe. Cr. Ni
Manganese steel mn. Fe
Nickel steel ni. Fe

Question 30

Non ferrous alloys

Answer 30

German silver CuNiZnu
Bronze. CuTin(bronze metal cuten)
Brass CuZn

Question 31

Amalgam

Answer 31

Please zebra
Zn amalgam
Na amalgam