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Mobile App Problem 1
What is meant by (a) an ionic compound and (b) a molecular compound? What are the typical properties of the rwo classes of compounds?
Problem 2
Can an clement be a molecular substance? Explain.
Problem 3
Draw the structural formulas of (a) \(2,2,4\) trimethylpentane, \(\left(\mathrm{CH}_{3}\right)_{3} \mathrm{COH}_{2} \mathrm{CH}\left(\mathrm{CH}_{3}\right)_{2}\), which is also called isooctane and is used to raise the octane rating of gasolinc; (b) 2 -methyl-1-propanol, which is commonly sold as isobutyl alcohol and used to make fruit flavorings.
Problem 5
State whether or not the following elements are more likely to form a cation or an anion and write the formula for that ion: (a) sulfur; (b) potassiums (c) strontium; (d) chlorine.
Problem 6
State whether or not the following elements are more likely to form a cation or an anion and write the formula for that ion: (a) zinc; (b) magnesium; (c) nitrogen; (d) oxygen.
Problem 9
Write the symbol of the ion that has (a) 9 protons, 10 neutrons, and 10 electrons; (b) 12 protons, 12 neutrons, and 10 clectrons; (c) 52 protons, 76 neutrons, and 54 clectrons; (d) 37 protons, 49 neutrons, and 36 electrons.
Problem 10
Write the symbol of the ion that has (a) 11 protons, 13 neutrons, and 10 electrons; (b) 13 protons, 14 neutrons, and 10 electrons; (c) 34 protons, 45 neutrons, and 36 electrons; (d) 24 protons, 28 neutrons, and 22 electrons.
Problem 11
Write the formula of a compound formed by combining (a) \(\mathrm{Al}\) and \(S\); (b) Na and \(\mathrm{O}\); (c) \(\mathrm{Mg}\) and \(S\); (d) \(\mathrm{Ba}\) and \(\mathrm{I}\).
Problem 12
Write the formula of a compound formed by combining (a) \(\mathrm{Ca}\) and \(\mathrm{P}\); (b) \(\mathrm{Al}\) and \(\mathrm{Br}\); (c) \(\mathrm{K}\) and \(\mathrm{F}\); (d) Li and S.
