Tips & Predictions Chemistry SPM 2012

Paper  2

Section A

Q1. Periodic Table, Isotopes(Usage)

Explain Electronegativity across the period

Explain why Group 18 is stable (Explain)

Reactivity of Group 17 with Iron (Set up of apparatus, observation, equation)

Q2. Medicine, Analgesics(paracetamol), Antibiotics (penicillin, streptomycin), Functions & Side Effect

Food Additives, Preservative(Sodium Nitrite), Flavouring Agents(Ethyl Ethanoate, Aspartame), Dyes (Sunset Yellow), Letchitin, Soap and Detergent.

Q3. Carbon Compound, Flow Chart

Hydrogenation, Esterification (Formation of Ester and Naming)

Dehydration(porcelain chips, set Up of Apparatus)

Draw Isomers, Homologous Series

Q4. Define Molecular Formula and Empirical Formula

Calculation for MgO(Crucible) and CuO(Combustion Tube)

Safety Precautions

Calculation for Decomposition of CaCO3

Q5. Neutralisation, Colour change of indicator

Calculation NaOH + HCl

Use of pipette and burette

Strong Acid and Weak Acid according to concentration

Q6. Heat of Displacement, Calculation

Change in Heat Energy, Energy Level Diagram,

Temperature Increase, Definition

Precautionary Steps

Section B & C

Q7. Electrical conductivity of two substances

Electrolysis of Sodium Chloride Solution (Diluted & Concentrated)

Voltaic Cell, Mg & Cu, Zn & Cu, Half Equations, Full Ionic Equations

Q8. Show Redox Reaction using Oxidation Number

Rusting of Iron, Draw Diagram, Half Equations,

Sacrifical Protection, Explain, Observations, Experiment

Q9. Preparation of Soluble Salt ZnSO4 or CuSO4

Test Anions and Cations Zn2+, NO3-, Pb2+, SO42-

Construct Ionic Equations with Insoluble Salt

Q10.  Rate of Reaction, Collision Theory

Sodium Thiosulphate solution with HCl, factor is Temperature

Experiment, Graph to calculate Instantaneous reaction

Contact Process

Paper  3

Q1.

- Hardness of Alloy and Pure Metal, Measure Diameter, Operational Definitions, Inference

- Voltaic Cell, Electrochemical Series, Inference, Hypothesis     

Q2. Heat of Combustion of Alcohol, Graph, Predict Value, Explanation

Q3.

-Compare Solubility of Salts, Carbonate, Chloride, Sulphate, Nitrate

-Sacrificial Protection Fe+Mg Fe+Cu Fe only, Rusting of Iron Nails

-Compare elasticity of Vulcanised Rubber and Unvulcanised Rubber