reviewing chemistry concepts 3

Reviewing Chemistry Concepts 39 weeks exam review

Question 21 What units are used to describe the

solubility of a substance in a given solution?

A amount of solute per amount of solvent B grams of solvent C grams of solute D grams of solvent per gram of solute

Question 22Which substance would be least likely to dissolve in a polar solvent.a. Ionic compoundb. Polar moleculec. Acidsd. Nonpolar molecule

Question 23 Which of the following is true about

atoms:a. Are charged particlesb. Have the same number of protons and

electronsc. Have the same number of neutrons

and protonsd. All atoms have the same mass

Question 24 Based on information from the periodic

table, which two elements will bond in ratio similar to that of lithium oxide? (2:1)

A magnesium and sulfur B sodium and fluorine C hydrogen and sulfur D magnesium and oxygen

Question 25 Any substance that does NOT conduct

electricity when in solution is called a(n) ?

A nonelectrolyte B electrolyte C conductor D semiconductor

Question 26

F blue G green H yellow J red

Question 27 Which of the following atoms would

have the largest ionic radius? A lithium B sodium C potassium D cesium

Question 28 Which of the following is the best way to

determine if an aqueous solution of sodium acetate (NaC2H3O2) is supersaturated?

A Add water to the solution. B Measure the temperature of the NaC2H3O2. C Filter all the NaC2H3O2 out of the solution. D Add a crystal of NaC2H3O2 to the solution.

Question 29 How many grams of iron (III) chloride,

FeCl3, should be added to a 100.0mL volumetric flask in order to prepare 0.050 M FeCl3? (Answer with significant digits.)

Question 30 "An electron must occupy the lowest available energy orbital" is stated by — F the Aufbau Principle G Hund's Rule H the Pauli Exclusion Principle J Bohr's Law