3.1 The boiling point of compounds A to E are given in the table below. 3.1.1 Define the term boiling point. (2) 3.1.2 Calculate the molecular mass of compound D. (1) 3.1.3 In what phase is compound B at 25 °C? (1) 3.1.4 Name the type of intermolecular force present in compound A. (1) 3.1.5 … Read more
Molecules such as CO2 and H2O are formed through covalent bonding. 2.1 Define the term covalent bonding. (2) 2.2 ONE of the above molecules has lone pairs of electrons on the central atom. Draw the Lewis diagram for this molecule. (2) 2.3 H3O+ is formed when H2O forms a dative covalent bond with an H+ … Read more
Four options are provided as possible answers to the following questions. Eachquestion has only ONE correct answer. Choose the answer and write only theletter (A–D) next to the question number (1.1–1.10) in the ANSWER BOOK, forexample 1.11 E. 1.1 Vector P and vector –P are acting on a common point O. The angle betweenthe two … Read more
1.1 According to the Arrhenius theory, all bases … A) are proton donors. B) are proton acceptors. C) form H3O+ ions in solution. D) form OH‾ ions in solution. (2) 1.2 The number of neutrons in an atom of N157 is … A) 5 B) 7 C) 8 D) 15 (2) 1.3 Which ONE of the following has the strongest forces between its … Read more
11.1 The Venn-diagram below shows two independent events, M and N. Determine the values of probabilities x and y. Show all calculations.(5) 11.2 The following contingency table shows information on the drivers’ tests of 100 drivers tested at a test centre in Port Elizabeth. A driver is randomly selected from the 100 drivers. 11.2.1 Determine … Read more
A survey regarding their favourite magazine(s) was conducted among 84 high school girls. Three magazines, namely Teen Vogue (T), Drum (D) and People’s Magazine (P) were used in the survey. The results are as follows: 41 read Teen Vogue. 34 read People’s Magazine. 40 read Drum. 18 read Teen Vogue and Drum. 8 read all … Read more
The sketch below shows the graph of the function f(𝑥) = a𝑥2 + b𝑥 +c. The straight line with equation 3y = 𝑥 – 5 intersects f at B. The points A(-2;0) and B are the 𝑥-intercepts of f . Point D(-1;3)is a point on f . 9.1 Determine the coordinates of B.(2) 9.2 Determine … Read more
The sketch below shows the graph of f(x) = 2 x ax – 1. The point A(1; 5) is a point on the graph. 8.1 Show that a = 3. (2) 8.2 Determine the y-intercept of f . (2) 8.3 Write down the range of f . (1) 8.4 Determine f (0,23), rounded off to … Read more
Given the following two functions: 7.1 Determine the 𝑥-intercept of h.(3) 7.2 Sketch neat graphs of h and g on the same set of axes. Clearly show all interceptswith the axes as well as asymptotes. (5) 7.3 Write down the equation of the vertical asymptote of h.(1) 7.4 Determine the coordinates of the points of … Read more