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Q1— Section header —
1.1Give ONE substance for each of the following descriptions by choosing a substance from the list below. Write only the substance next to the question number (1.1.1
1.1.5\n the ANSWER BOOK. He; ; CO
1.1.1Metal atoms that can attain a stable configuration by the loss of one electron
1.1.2Noble gas
1.1.3Atom that can attain a stable configuration by gaining electrons
1.1.4Electron shared in pairs so that the atom can attain the stable electron configuration of a noble gas
1.1.5
1.2Name the bonding type in each of the following
1.2.5
1.3Give ONE substance for each of the following descriptions by choosing a substance from the list below. Write only the substance next to the question number (1.3.1
1.3.5\n the ANSWER BOOK. KBr; C (diamond\ Cu; NH
1.3.5
1.4Name and di scuss in detail the type of bonds that occur between the chlorine atoms in C (g\ (5\
1.5Define the term dative covalent bond (2\
1.6Draw the ooper structure for nitrate ion and clearly indicate the dative covalent bond. (3\ [25]25
Q2— Section header —
2.1Is the radius of a c hlorine atom bigger, smaller or the same as the radius of a hosphorus atom? Explain the answer. (3\
2.2Which ion has a smaller radius Na or Al +3 ? Explain the answer.
2.3Consider the BeC compound
2.3.7Name this compound. How many pairs of electrons are in BeC molecule? Write down the angle in
2.4Explain the concept of resonance by using the structural formulae for nitrate ion and clearly show
2.5Define Sidgwick and Powell 's theory (3\
2.6Give the appropriate geometric shape of each of the following:
2.6.4
Q3— Section header —
3.1Define each of the following:
3.1.1
3.1.2
3.2Study the ionisation of hydrochloric acid in water: (aq\ + H (l\
3.2.4Complete the reaction. Write down the K value for the expression. Is the K smaller or bigger? Explain the answer.
3.3Which acid is stronger: HOC or HOBr (1\ [10]10
Q4— Section header —
4.1Explain ONE method used to prepare carbon dioxide in the laboratory. (2\
4.2Give ONE use of each of the following:
4.2.1Coke
4.2.2
4.3Write down the balance reaction between carbon and boiling sulphur (2\
4.4Write down the general formula of alkane (1\
4.5Complete the following reaction SiO + 3C (2\
4.6Give ONE example of an ionic carbide (1\ [10] 1504000410
Q5— Section header —
5.1Classify each of the following as an i onic, covalent or interstitial hydride
5.1.3
5.2Wri te down the balanced reaction between hydrogen and boiling sulphur (2\
5.3Give ONE use of hydrogen (1\
5.410
Q6— Section header —
6.1Given + 3H
6.1.1Name the gas produced (1\
6.1.2Name the industrial method represented. (1\
6.1.3Give TWO use of ammonia (2\
6.2Complete the following reaction 4NH + 5O (2\
6.3Name each of the following gases
6.3.2NO
6.3.410
Q7— Section header —
7.1Explain how O is prepared in the laboratory. (2\
7.2Give ONE advantage of the O in the atmosphere. (1\
7.3Give TWO uses of O 3. (2\
7.4Name THREE methods used to soften permanent hard water. (3\
7.5Complete the following reaction: 2Pb (2\ [10] TOTAL:10