CSP1501 Assignment 3 (DETAILED ANSWERS) 2024 - DISTINCTION GUARANTEED

CSP1501 Assignment 3 (DETAILED ANSWERS) 2024 - DISTINCTION GUARANTEED Answers, guidelines, workings and references ................... QUESTION 1 [35] 1. Two high school leaners came to you confused about the physical properties of metals and nonmetals, in a table form contrast the differences between the physical properties of metals and nonmetals (10) 2. Periodic table is the organized array of all the chemical elements in order of increasing atomic number, that is the total number of protons in the atomic nucleus. Please answer the following questions based on the periodic table (7) 2.1 How many electrons, neutrons and protons does an aluminum atom have? 2.2 How many elements groups are there in the periodic table? 2.3 To which group does hydrogen belong? 2.4 What is the atomic weight for copper? 2.5 What is the atomic mass of Nitrogen? 2.6 What is the maximum number of electrons that can accommodate in a K shell? 2.7 What is ionization energy? 3. What is the valency of the following elements? (3) 3.1 Hydrogen 3.2 Magnesium 3.3 Silver 4.Given the following substances, please indicate the separation method that you will use to separate them? (5) 4.1 Carrots seeds and beetroot seeds. 4.2 Sugar beans and water 4.3 Copper sulphate crystals from copper sulphate solutions 4.4 cornflakes and milk 4.5 Iodine, Iron fillings and sand. 5. Study this chemical formula: 2H2O2 and then answer the questions that follow: (3) 5.1 How many hydrogen atoms are there in the above formula? 5.2 How many Oxygen atoms are in 2H2O2? 5.3 How many molecules of 2H2O2 are here in the formula above? 6. Your grand cousin has decided to soak kidney beans inside water, and after a few hours you realize that the seeds has swollen. 6.1 Because of which phenomenon has the seeds swollen? (1) 6.2 Give a definition of your answer in 7.1. (1) 7. Draw up a table and list the following substances beneath one another. In the first column. In the second column, indicate whether the substance is an acid or base. In the third column write the pH value next to it. (5) 7.1 Lemon juice 7.2. Human blood 7.3. White vinegar 7.4. Bathing soap 7.5. Rainwater QUESTION 2 [9] 2.2 Calculate the circumference of a container with a radius of 37 cm. (2) 2.3 Calculate the area of a square with side lengths of 205 mm. Give the answer in meters. (2) 2.4 You are renovating your kitchen and want to buy a new fridge and need to know how much space it will take up. The fridge you want to buy has the following measurements. Breadth = 186 cm, length = 1920 mm. 2.4.1. Determine the minimum area (in meters) of the space where you want to put the fridge. Show all calculations. (3) 2.5 When considering what you have learned about fusion (melting), why do you think countries, which experience extreme colds during winter, pour salt on their roads? (2) QUESTION 3 [36] 3.1. The nucleus is the largest cell structure within the protoplasm and occupies the central position of the cell. List two main functions of the nucleus. (2) 3.2. Name the different types of muscle tissue and state whether they are voluntary or involuntary? (3) 3.3 What is the difference between afferent and efferent neurons? (2) 3.4 Explain the process of a blood clot formation and why it is important in the human body. (4) 3.5 State whether the following statements are true or false (6) 3.5.1 Active transport depends on the life processes within the cells and requires energy from chemical reactions within the living cell. 3.5.2 The type of plain active transport by which substances may move through cell the membrane is called exocytosis. 3.5.3 Tissue is an organization of a great number of many similar cells with varying amounts and kinds of nonliving, intercellular substance between them. 3.5.4 Mast cells are quite large and are widely distributed in connective tissue and are usually found near blood vessels. 3.5.5 Cartilage is a specialized connective tissue that provides support and aids movement in joints. 3.5.6 One of the functions of the stomach is to secrete bile which is stored in the gall bladder. 3.6. Describe how hormones regulate blood pressure, blood volume, and kidney function (3) 3.7. Which structural characteristics of neurons make them suitable for the transmission of nerve impulse (2) 3.8. Explain how the villi and microvilli aid in absorption? (2) 3.9. Name two components of the digestive system that perform mechanical digestion. Then, describe how mechanical digestion contributes to acquiring nutrients from food (4) 3.10. How does the structure of alveoli maximize gas exchange in the lungs? (2) 3.11. What are the major differences between spongy bone and compact bone in the skeletal system? (6) QUESTION 4 [20] Hypertension is a major health problem in virtually all parts the world, as well as in South Africa. This calls for more action in the management of hypertension. Search information from peer reviewed journal articles and then write an annotated essay. Your essay should at least answer the following questions: 1. What is hypertension 3. What are the causes of hypertension 2. How can hypertension be managed 3.How can hypertension be prevented or delayed Please refer to these links below for academic writing