Bohr Diagrams/Lewis Diagrams. Naming Ionic Compounds
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1 Bohr Diagrams/Lewis Diagrams Which subatomic particles are located in the nucleus? Protons and neutrons What is the difference between a Bohr Diagram and a Lewis Diagram? Lewis diagram shows only valence electrons while a Bohr diagram shows all electrons in each orbital Draw: Bohr diagram of an ion of Magnesium: Bohr diagram of LiF: Lewis diagram of an atom of Chlorine: Lewis diagram of CO 2 : Naming Ionic Compounds What does multivalent mean? More than one ion charge Give two examples of multivalent metals: Fe, Ni, Cu, Au, etc What is a polyatomic ion? Group of atoms that acts like a single particle with a charge a) BeS Beryllium sulphide b) Hg 3 N 2 Mercury (II) nitride c) Cu(NO 3 ) 2 Copper (II) nitrate d) Ag 2 O Silver oxide e) CoBr 2 Cobalt (II) bromide f) Bi 3 (PO 4 ) 5 Bismuth (V) phosphate g) Ni(OH) 2 Nickel (II) hydroxide h) K 2 Cr 2 O 7 Potassium dichromate i) ScF 3 Scandium fluoride j) NaI Sodium iodide k) Pb(CO 3 ) 2 Lead (IV) carbonate l) RbClO 2 Rubidium chlorite
2 Ionic Formulas a) Aluminum bromide AlBr 3 b) Platinum (II) sulphide PtS c) Strontium sulfite SrSO 3 d) Scandium oxide Sc 2 O 3 e) Titanium (IV) nitrite Ti(NO 2 ) 4 f) Ammonium sulphate (NH 4 ) 2 SO 4 g) Lithium selenide Li 2 Se h) Lead (II) bisulphate Pb(HSO 4 ) 2 i) Sodium acetate NaCH 3 COO j) Cesium chloride CsCl k) Cadmium hydroxide Cd(OH) 2 l) Zinc phosphate Zn 3 (PO 4 ) 2 m) Barium chloride BaCl 2 n) Tin (II) permanganate Sn(MnO 4 ) 2 o) Lithium hypochlorite LiClO p) Gold (III) sulphate Au 2 (SO 4 ) 3 q) Sodium nitrate NaNO 3 r) Chromium (III) chloride CrCl 3 s) Potassium carbonate K 2 CO 3 t) Iron (III) bisulphate Fe(HSO 4 ) 3 Covalent Compounds What makes a covalent compound different from an ionic compound? A covalent compound has 2 non-metals and an ionic compound has a metal and non-metal Write the chemical formula for each of the following compounds: a) Silicon dioxide SiO 2 b) Chlorine dioxide ClO 2 c) Tellurium dioxide TeO 2 d) Selenium trioxide SeO 3 e) Carbon disulphide CS 2 f) Arsenic trichloride AsCl 3 g) Chlorine heptoxide ClO 7 h) Selenium difluoride SeF 2 Write the chemical name for each of the following compounds: 1) S 2 C 2 Disulphur dichloride 2) PBr 3 Phosphorus tribromide 3) SiF 4 Silicon tetrafluoride 4) Cl 2 O 7 Dichlorine heptoxide 5) ClF 3 Chlorine trifluoride 6) N 2 O 3 Dinitrogen trioxide 7) TeBr 2 Tellurium dibromide 8) ClO Chlorine monoxide 9) AsO 3 Arsenic trioxide
3 Skeleton Equations Given the word equation, write the skeleton equation: 1) hydrogen + oxygen water H 2 + O 2 H 2 O 2) iron (III) oxide + hydrogen water + iron Fe 2 O 3 + H 2 H 2 O + Fe 3) sodium + water sodium hydroxide + hydrogen Na + H 2 O NaOH + H 2 4) calcium carbide + oxygen calcium + carbon dioxide CaC 2 + O 2 Ca + CO 2 5) potassium iodide + chlorine potasium chloride + iodine KI + Cl 2 KCl + I 2 6) chromium + tin (IV) chloride chromium (III) chloride + tin Cr + SnCl 4 CrCl 3 + Sn 7) magnesium + copper (II) sulphate magnesium sulphate + copper Mg + CuSO 4 MgSO 4 + Cu 8) zinc sulphate + strontium chlorde zinc chloride + strontium sulphate ZnSO 4 + SrCl 2 ZnCl 2 + SrSO 4 9) ammonium chloride + lead (II) nitrate ammonium nitrate + lead (II) chloride NH 4 Cl + Pb(NO 3 ) 2 NH 4 NO 3 + PbCl 2 10) iron (III) nitrate + magnesium sulphide iron (III) sulphide + magnesium nitrate Fe(NO 3 ) 3 + MgS Fe 2 S 3 + Mg(NO 3 ) 2 Balancing Write the coefficients necessary to balance the following equations: 1. H 2 + F 2 HF (1, 1, 2) 2. Sn + O 2 SnO (2, 1, 2) 3. MgCl 2 Mg + Cl 2 (Balanced) 4. KNO 3 KNO 2 + O 2 (2, 2, 1) 5. BN + F 2 BF 3 + N 2 (2, 3, 2, 1) 6. CuI 2 + Fe FeI 2 + Cu (Balanced) 7. Li + H 2 O LiOH + H 2 (2, 2, 2, 1) 8. NH 3 + O 2 N 2 + H 2 O (4, 3, 2, 6) 9. V 2 O 5 + Ca CaO + V (1, 5, 5, 2) 10. C 9 H 6 O 4 + O 2 CO 2 + H 2 O (2, 17, 18, 6)
4 Acids and Bases Substance ph Value Acid/Base ph Indicator Colour of ph Indicator Black coffee 5 Acid Litmus Red Milk of magnesia 10 Base Phenolphthalein Pink Battery acid 0 Acid Bromothymol blue Yellow Sea water 8 Base Indigo carmine Blue Orange juice 3 Acid Methyl orange Red Liquid drain cleaner 14 base Methyl red yellow Term Chemical Formula What is the name of each of the following acids: 1. water A A. H 2 O 2. a salt B 3. a base D 4. an acid C B. MgCl 2 C. H 2 CO 3 D. NH 4 OH 1. H 2 CO 3 carbonic acid 2. CH 3 COOH acetic acid 3. H 3 PO 4 phosphoric acid 4. HClO 2 chlorous acid 5. H 2 SO 3 sulphurous acid Name each type of chemical reaction: Types of Reactions 1. 2 KClO 3 2 KCl + 3 O 2 D Al + 3 S 8 8 Al 2 S 3 S 3. LiOH + HNO 3 H 2 O + LiNO 3 N 4. 2 C 6 H O 2 14 H 2 O + 12 CO 2 C 5. 2 AgNO 3 + Cu Cu(NO 3 ) Ag SR 6. Pb(NO 3 ) 2 + K 2 CrO 4 PbCrO KNO 3 DR Classify, complete and balance each equation: D S SR DR N S C 1. H 2 O H 2 + O 2 (2, 2, 1) 2. H 2 + Cl 2 HCl (1, 1, 2) 3. NaI + F 2 NaF + I 2 (2, 1, 2, 1) 4. AgNO 3 + Na 3 PO 4 Ag 3 PO 4 + NaNO 3 (3, 1, 1, 3) 5. Ba(OH) 2 + H 2 SO 4 BaSO 4 + H 2 O (1, 1, 1, 2) 6. P 4 + Cl 2 PCl 3 (1, 6, 4) 7. CH 3 OH + O 2 H 2 O + CO 2 (2, 3, 4, 2)
5 Complete the table below Atomic Structure and Energy of Reactions Element/Ion Symbol Atomic Number Atomic Mass protons electrons neutrons Gallium Ga Copper ion Cu Barium Ba Bromine ion Br Phosphorus P For each of the following, decide it the reaction/process is exothermic () or endothermic (). Burning a candle A tree growing Cooking an egg Making ice cubes N 2 + O 2 + Energy 2 NO Zn + 2HCl ZnCl 2 + H 2 + Energy
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