DEMARCATION FOR GRADE 11 JUNE EXAMINATION PAPER 2 PHYSICAL SCIENCES Time: 120 MIN ON 14 JUNE 2023 135 marks PLEASE STUDY THE FOLLOWING CAREFULLY: According to the SAG DOCUMENT: A. c 1. Balanced chemical equations. 2. The mole concept. 3. Molar volume of gasses 4. Concentration of solutions 5. Stoichiometric calculations B. CHEMICAL BONDING 1. Intramolecular bonds only (up to metallic bonding). (NO intermolecular bonding) 2. Physical properties - NO C. ENERGY CHANGES AND RATES OF REACTIONS 1. Energy changes in reactions 2. Activation energy 3. Rates of reactions - NO D. CHEMICAL EQUILIBRIUM - NO E. ACIDS AND BASES 1. Ionisation, dissociation and strength of acids and bases 2. Conjugate acid-base pairs 3. Kw, Ka, Kb and pH - NO 4. Acid base reactions, (titrations and hydrolysis – NO) Definition of a salt, Writing balanced equations for acid reactions and Identification of the acid and the base that will produce a salt. - ONLY F. ELECTROCHEMISTRY - NO G. ORGANIC CHEMISTRY - NO PAPER LAYOUT: General instructions Read the questions carefully. Answer All questions on the question paper and hand it in at the end of the examination. Unless instructed otherwise, you do NOT have to give state symbols (phase indicators) when asked to write a balances chemical equation. Use the data and formulae whenever necessary. Show all the necessary steps in calculations. Where appropriate, take your answer to two decimal places. It is in your own interest to write legibly and to present your work neatly. QUESTION 1 – MULTIPLE CHOICE QUESTIONS Choose the correct answer from 3 distractors. QUESTION 2 AND CONTINUE Longer questions that assess all work according to demarcation above and cognitive levels. Total Paper: All the best!!!!! 10 x 2 = 20 115 135