Reactions

Question 1

Metal + Acid =

Answer 1

Salt + Hydrogen

Question 2

Metal Hydroxide + Acid =

Answer 2

Salt + Water

Question 3

Metal Oxide + Acid =

Answer 3

Salt + Water

Question 4

Metal Carbonate + Acid =

Answer 4

Salt + Water + Carbon dioxide

Question 5

What is redox reaction dependent on ?

Answer 5

Ph
At Ph 4, it loses an electron
At PH 9, it gains an electron

Question 6

What is hybridisation

Answer 6

Process in which different orbitals with different shape and energy mix together and produce equal number of orbitals with equal energy and shape

Question 7

What factors affect electronegativity

Answer 7

Atomic Radius

Nuclear Charge

Question 8

What is the bond type when calculating electronegativity difference

Answer 8

Covalent - 0
Polar Covalent - 0 to 1.8
Ionic - 1.8+

Question 9

When are molecules polar

Answer 9

If different terminal atoms - non symmetrical

If lone pairs around central atom

Question 10

what happens to molecules when infrared radiation is absorbed ?

Answer 10

bond vibrates more

Question 11

A student adds CH3COH and concentrated HCl to a round bottomed flask.
Shakes the flask until the mixture separates into two layers
Explain how the student could obtain a pure dry sample of CH3CCl from the mixture in the flask

Answer 11

Separating funnel to remove organic layer from aqueous layer, the organic layer will be at the top
Add anhydrous salt such as MgSO4 to dry the organic layer
Use distillation to purify the product