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SCH3U - Quiz 1 (Unit 1)

SCH3U - Quiz 1 (Unit 1). Question 1. Name the six people who contributed to the atomic model and put them in order, from earliest to most recent. Question 2. For the periodic table, which of the following elements has: The smallest atomic radius? Mn, Ti, Li, C, Si

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SCH3U - Quiz 1 (Unit 1)

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  1. SCH3U - Quiz 1 (Unit 1)

  2. Question 1 • Name the six people who contributed to the atomic model and put them in order, from earliest to most recent.

  3. Question 2 • For the periodic table, which of the following elements has: • The smallest atomic radius? Mn, Ti, Li, C, Si • The highest electronegativity? I, Zr, N, Pd, S • Largest ionization energy? Ra, Ag, Ba, Cs, Cu

  4. Question 3 • Write chemical formulas for the following compounds: a) tin(II) sulphide b) calcium phosphate c) hydrofluoric acid d) iron(III) oxide e) diphosphorus pentoxide

  5. Question 4 • Write IUPAC names for the following compounds: a) H3PO4 b) Ca(OH)2 c) S2O3 d) NaCH3COO e) Sn(ClO3)4

  6. Question 5 • Compare and contrast molecular and ionic compounds. Use 3 points!

  7. Question 1 • Name the six people who contributed to the atomic model and put them in order, from earliest to most recent. • Democritus • Dalton • Thomson • Rutherford • Chadwick • Bohr

  8. Question 2 • For the periodic table, which of the following elements has: • The smallest atomic radius? Mn, Ti, Li, C, Si • The highest electronegativity? I, Zr, N, Pd, S • Largest ionization energy? Ra, Ag, Ba, Cs, Cu

  9. Question 3 • Write chemical formulas for the following compounds: a) tin(II) sulphide b) calcium phosphate c) hydrofluoric acid d) iron(III) oxide e) diphosphorus pentoxide • SnS • Ca3(PO4)2 • HF (aq) • Fe2O3 • P2O5

  10. Question 4 • Write IUPAC names for the following compounds: a) H3PO4 b) Ca(OH)2 c) S2O3 d) NaCH3COO e) Sn(ClO3)4 • phosphoric acid • calcium hydroxide • disulphur trioxide • sodium acetate • tin(IV) chlorate

  11. Question 5 • Compare and contrast molecular and ionic compounds. Use 3 points! Melting/Boiling Points – Ionic compounds have high MP/BP. Molecular compounds have low MP/BP. This is due to the stability of nature of bonds within these compounds. Texture and Hardness – Ionic compounds are hard and brittle (due to bonds). Molecular compounds are soft, waxy and flexible. Conductivity – Ionic compounds usually conduct electricity. Molecular compounds tend to not to. This is because when dissolved in water, ionic compounds dissociate into their individual charges (+/-) whereas molecular compounds lack the ability since they cannot dissolve in water. Solubility in water – Ionic compounds can readily dissolve in water. Molecular compounds do not.

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