Semester+II+Exam

SEMESTER II EXAMINATION June 2011

The learning outcomes that will be assessed during the semester II exam are as follows:

1. Explain the difference between temperature and heat energy. Defend your answer with a suitably labeled diagram of ordinary everyday objects. 2. Define the terms endothermic and exothermic. Be able to draw energy profiles for both types of reaction and label fully. 3. Define specific heat and use the specific heat to solve calorimetry experiments. Interpret the results of data from calorimetry experiments. 4. Calculate the enthalpy of a reaction from calorimetry data. 5. Determine the enthalpy of a reaction using Hess’s law. 6. Design an experiment to measure the energy of a reaction. 7. Define activation energy and identify the activation energy on an exothermic and endothermic energy profile. 1. Identify the requirements for a successful chemical reaction. Explain all of these requirements in terms of the collision theory. 2. Define the term reaction rate and state the units of reaction rate. 3. Read and interpret reaction concentration versus time graphs 4. Describe factors that can change the rate of a reaction and explain how they increase or decrease the rate 5. Define a catalyst and show the impact of a catalyst on the energy profile of a reaction 1. Explain that acids are proton donors and bases are proton acceptors. 2. Identify acids and bases in chemical reactions and be able to label the conjugate acid-base pairs. 3. Describe the procedure of titration in detail and understand the logic of each step in the procedure. 4. Identify the equivalence point in a titration and use it to calculate the unknown concentration of an acid or base. 5. Use the [H+] to determine pH   6. Use the [OH-] to determine the pOH 7. Use pH to find pOH and pOH to find pH   8. Describe the difference between a strong and weak acid ( or base) and produce a clearly labeled diagram that explains the difference. 1. Define oxidation and give an example of an oxidation process 2. Define reduction and give an example of a reduction process 3. Define oxidation and reduction in terms of electron loss or gain 4. In a chemical reaction, identify the oxidation and reduction process 5. Explain the difference between an oxidizing agent and a reducing agent 6. Identify some everyday issues with corrosion and outline methods that can be used to prevent corrosion 7. Use the rules of oxidation numbers to find the oxidation number of each element in a compound, element or ion 8. Use oxidation number to identify the reduction and oxidation processes in a chemical reaction 9. Write half equations for reduction and oxidation and use to make a fully balanced redox equation 10. Label an electrochemical cell fully including anode, cathode, salt bridge, both electrolyte solutions. 11. Identify the oxidation process and the reduction process in an electrochemical cell Exam Tips o ** Be sure to re-do every problem worked in class from the module packets. **  o **  Be sure to read for understanding   ** o ** Be sure to take notes and then summarise your notes  ** o ** Be sure to test yourself without looking at your notes  ** o ** Be sure to WRITE your exam study work – after all, you will be asked to write in the exam ( reading is easy and requires little brain power – writing on the other hand takes more effort and as a result creates stronger connections in your brain)  **
 * Energetics Module **
 * Kinetics Module **
 * Acid Base Module **
 * Redox module **