5.1 Read the passage (TEXT F) below, which has some deliberate errors, andanswer the set questions. 5.1.1 Correct the SINGLE error in EACH of the following sentences. Writedown ONLY the question numbers and the words you havecorrected. (a) Every January, you promise yourself that you will get healthyerand fitter.(1) (b) Its time you put your … Read more
Hydrogen peroxide, H2O2, decomposes to produce water and oxygen according to the following balanced equation: 5.1 The activation energy (EA) for this reaction is 75 kJ and the heat of reaction (ΔH) is –196 kJ. 5.1.1 Define the term activation energy. (2) 5.1.2 Redraw the set of axes below in your ANSWER BOOK and then … Read more
Dilute acids, indicated in the table below, react with EXCESS zinc in each of the three experiments to produce hydrogen gas. The zinc is completely covered with the acid in each experiment. The volume of hydrogen gas produced is measured in each experiment. 5.1 Name TWO essential apparatuses needed to determine the rate of hydrogen … Read more
(Start on a new page.) A pendulum with a bob of mass 5 kg is held stationary at a height h metres above the ground. When released, it collides with a block of mass 2 kg which is stationary at point A. The bob swings past A and comes to rest momentarily at a position … Read more
In the diagram below, a 4 kg block lying on a rough horizontal surface is connected to a 6 kg block by a light inextensible string passing over a light frictionless pulley. Initially the blocks are HELD AT REST. 5.1 State the work-energy theorem in words. (2) When the blocks are released, the 6 kg … Read more
A group of learners uses the reaction between powdered zinc and EXCESS dilute hydrochloric acid to investigate one of the factors that affects the rate of a chemical reaction. The balanced equation for the reaction is: Zn(s) + 2HCl(aq) → ZnCl2(aq) + H2(g) They conduct two experiments. The reaction conditions used are summarised in the … Read more
The track for a motorbike race consists of a straight, horizontal section that is 800 m long. A participant, such as the one in the picture above, rides at a certain average speed and completes the 800 m course in 75 s. To maintain this speed, a constant driving force of 240 N acts on … Read more
QUESTION 5: NOTHING BUT THE TRUTH Read the extracts from the play below and answer the set questions. The number of marks allocated to each question serves as a guide to the expected length of your answer. NOTE: Answer the questions set on BOTH extracts, i.e. QUESTION 5.1 AND QUESTION 5.2. 5.1 EXTRACT I [Sipho … Read more
5.1.1 Interpret China’s net migration rate. (2) 5.1.2 Calculate the difference between the projected population sizes of China and the USA at the end of 2015 based on their population growth. (5) Use the bar graph to answer the following questions. 5.2.1 Name the region that shows the greatest difference between the amount of crude … Read more
Study the information in ANNEXURE C to answer the questions that follow. 5.1.1 Name another type of graphical representation that could be used to represent this data. (2) 5.1.2 Determine the maximum number of candidates who were admitted as full-time candidates in 2016. (2) 5.1.3 Determine the probability of randomly selecting a candidate, taking Mathematics or Mathematical Literacy, who was … Read more