Revision Blog

Todays Lesson - Only 1 Periods left until the Internal!!!!

Part 1
Recap Combination & Decombination (5mins)
Test you knowledge (Internal Practice) (15mins)

Part 2
Recap Displacement (5mins)
Test you knowledge (Excellence Internal Practice - will be marked ) (20 mins)

Friday 
Part 3
Exchange Reaction Recap 
Test Your Knowledge

Solubility Table

1.    All nitrates are soluble. 2.    All sodium and potassium compounds are soluble. 3.    All chlorides are soluble except silver chloride and lead chloride. 4.    All sulfates are soluble except barium sulfate, lead sulfate, calcium sulfate. 5.    All carbonates are insoluble except sodium and potassium carbonates. 6.    All hydroxides are insoluble except sodium and potassium hydroxides.

Reactivity Series of Metals

1.    Potassium

2.    Sodium

3.    Lithium

4.    Calcium

5.    Magnesium

6.    Aluminium

7.    Zinc

8.    Iron

9.    Tin

10. Lead

11. Copper

12. Silver

13. Gold

14. Platinum

How to write an answer. (5 steps to Merit & Excellence)

RULE :A displacement reaction in where a more reactive metal displaces a less reactive metal from a solution.

OBSERVATION: When the Magnesium metal was placed in the Copper Sulfate solution, we saw Copper crystals form as the Magnesium was corroded.

WHY/JUSTIFY 
This was because Magnesium is a more reactive metal than Copper and it was reacting with the Sulfate in the solution.

As the symbol equation shows as well as lead, a solution of zinc nitrate was being formed also.

WORD EQUATION

SYMBOL EQUATION
Zn_(s) + Pb(NO₃)_(aq) → Pb_(s) + Zn(NO₃)_2(aq)