Atomic Structure and Bonding Question paper and memo
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Course
Atomic Structure and Bonding (CHE101)
Institution
Rhodes University (RU)
Book
General Chemistry
This document is an Exam based question paper and memorandum consisting of the first two modules of CHE101, Intro to General Chemistry and Atomic Structure and Bonding.
SECTION A: Answer this section in a Multiple-Choice Answer Sheet provided.
SECTION B: Answer this section in a separate answer book provided.
2. There are THREE long questions. Answer ALL THREE questions.
(1) Start each new full question on a NEW page.
(2) Do NOT use red ink anywhere in the script.
(3) Fill in the question numbers on the front cover of your answer book.
3. Time management is very important. The value of the mark for each question should be used as
a rough guide to the amount of time allocated to answer the questions.
Section A: Multiple Choice Questions. Attempt ALL questions. (25 minutes; 22 marks)
Section B: Attempt ALL FIVE questions. (65 minutes, 62 marks)
4. It is in the candidate’s interest to write legibly.
5. At the end of the examination, place all answer books and multiple-choice answer sheet inside
the book used to answer SECTION B.
6. This paper has 9 pages, which includes 2 appendices.
7. The Oxford concise English dictionary may be use during this examination.
8. The TASK NUMBER for the MULTIPLE CHOICE is 87.
PLEASE DO NOT TURN OVER THIS PAGE UNTIL TOLD TO DO SO.
, Chemistry 101
March 2023
SECTION A – MULTIPLE CHOICE – Attempt ALL questions – 25 minutes
Instructions
1. Write your student number under Student number on the answer form
2. In each column under your student number, fill in the circle containing the digit corresponding to
the digit in your student number above.
3. Task number: 87
4. Select your answer to each question and, with a dark pencil, or a black or blue pen, colour in the
circle containing the letter of that answer in the row corresponding to the question number.
5. Only one circle per row can be filled in.
6. If you make a mistake, cross it out and fill in another circle.
SECTION A – 18 QUESTIONS – 25 MINUTES
1. What is the best answer to the following expression involving a sum of measurements?
(52.706 cm + 0.734 cm + 14.4 cm)
(A) 68 cm (B) 67.8400 cm
(C) 67.84 cm (D) 67.840 cm
(E) 67.8 cm
2. How many 100-mg aspirin tablets can be made from 10.0 kg of aspirin? (2 marks)
(A) 10 000 00 (B) 1 000 000
(C) 1000 (D) 10 000
(E) 100 000
3. The nucleus of a 191Ir nuclide contains (2 marks)
(A) 191 neutrons and 268 electrons.
(B) 77 protons and 191 neutrons.
(C) 191 protons and 114 electrons.
(D) 191 protons, 77 neutrons, and 191 electrons.
(E) 77 protons and 114 neutrons.
4. The elements in a row of the periodic table are known as
(A) metals. (B) a period.
(C) metalloids. (D) a family.
(E) a group.
5. How many electrons does a barium ion have?
(A) 56 (B) 8
(C) 54 (D) 44
(E) 2
QUESTION 6 IS ON THE NEXT PAGE
Page 2 of 11
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