CHEM1011 Lecture Notes - Barium Nitrate, Ion, Barium Chloride
2 Jul 2018
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TOPIC 14.
REVISION TUTORIAL.
This revision tutorial includes a self-assessment component intended to provide an indication
of those sections where you might benefit from further study. Work through the questions
without consulting your notes. After the Tutor has explained the answers to each section,
assign yourself a score as indicated at the beginning of the question and plot it on the grid
provided on the final page to give an overall profile of your progress in the various topics.
QUESTION 1. SYMBOLS AND FORMULAS.
1 mark for each answer
(a) Give the symbol for the following elements:
(i) sodium (ii) calcium
(iii) strontium (iv) boron
(v) lead (vi) sulfur
(vii) fluorine (viii) argon
(ix) copper (x) iron
(b) Give the name for each of the following elements:
(i) K (ii) Be
(iii) Al (iv) Si
(v) P (vi) As
(vii) I (viii) He
(ix) Co (x) Mn
(c) Give the formula for each of the following compounds:
(i) calcium oxide (ii) sodium bromide
(iii) aluminium nitrate (iv) magnesium nitride
(v) lithium phosphate (vi) ammonium sulfate
(vii) iron(II) sulfide (viii) iron(III) oxide
(ix) copper(II) carbonate (x) chromium(III) chloride
(d) Give the name for each of the following compounds:
(i) KF (ii) ZnCl2
(iii) Fe(NO3)3(iv) CuSO4
(v) BaCO3(vi) (NH4)3PO4
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(vii) RbBr (viii) MgO
(ix) NaOH (x) CaI2
(e) Name the following covalent compounds:
(i) BF3(ii) CO2
(iii) H2O (iv) NH3
(v) CH4
(f) Give the formula for the following covalent molecules:
(i) sulfur(VI) fluoride (ii) phosphorus trichloride
(iii) nitrogen dioxide (iv) dinitrogen pentoxide
(v) silicon tetrachloride
SCORE / 50: ..................... ÷ 5 = ............ Transfer to graph on the final page.
QUESTION 2. ATOMIC STRUCTURE AND CHEMICAL BONDS.
4 marks for each answer.
(a) Explain the meaning each of the following terms:
(i) atomic number
(ii) ground state
(ii) cation
(iv) anion
(v) ionic bond
(vi) covalent bond
(vii) unsaturated molecule
(b) What type of bond is expected to be present in a compound of a metal and a non-metal?
(c) What type of bond is expected to be present in a compound of two non-metals?
(d) Why do Group 1 elements form +1 charged ions in their compounds?
(e) Why do the halogens (Group 17) form –1 charged ions in their ionic compounds?
SCORE / 44: .......................... ÷ 4.4 = ............ Transfer to graph on the back page.
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QUESTION 3. WRITING EQUATIONS.
4 Marks for each equation.
(a) Write a formula equation for each of the following reactions:
(i) Carbon is burnt in oxygen to form carbon dioxide.
(ii) Magnesium metal combines with chlorine to form magnesium chloride.
(iii) Calcium carbonate is heated to form calcium oxide and carbon dioxide.
(iv) Hydrogen and oxygen combine to form water
(v) Sulfur combines with fluorine to form sulfur hexafluoride
(b) Write an ionic equation for each of the following reactions. Delete all spectator ions from
your final equation.
(i) Potassium chloride is dissolved in water.
(ii) A solution of barium nitrate is evaporated to form solid barium nitrate.
(iii) Water solutions of silver nitrate and sodium chloride are mixed to precipitate silver
chloride solid.
(iv) Water solutions of barium chloride and sodium sulfate are mixed, precipitating barium
sulfate solid.
(v) Calcium oxide is mixed with hydrochloric acid to form a salt in solution and water.
SCORE / 40: ..................... ÷ 4 = ............ Transfer to graph on the back page.
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Document Summary
This revision tutorial includes a self-assessment component intended to provide an indication of those sections where you might benefit from further study. Work through the questions without consulting your notes. Score / 50: 5 = Score / 44: 4. 4 = Score / 40: 4 = Calculate the mass of sodium hydroxide required to prepare 53. 0 g of sodium carbonate. (atomic weights: na = 22. 99, c = 12. 00, o = 16. 00, h = 1. 01) Score / 50 5 = Score / 12: 1. 2 = 6 marks for each part of (c) (c) balance the following redox equations using the ion-electron half equation method. Indicate for each half equation whether it is an oxidation or a reduction. (i) cu(s) + ag+(aq) ag(s) + cu2+(aq) (ii) fe3+(aq) + h2s(aq) fe2+(aq) + 2h+(aq) + s(s) Score / 30: 3 = Acids and bases. (a) 2 marks for each answer.
