Name ______Date______

Exam Take-home quiz

Due: April 22, 2014 Tuesday

  1. Using the correct number of coefficients balance the following equations.

a. ___K + ___FeCl3 ⇨ ___KCl + ___Fe

b. ___MgCl2 +___K2SO4 ⇨ ___MgSO4 + ___KCl

  1. Write a balanced equation, including phases, for the reaction between potassium hydroxide and sulfuric acid. Write the type of reaction.
  1. Hydrogen and oxygen react to form water. Write the balanced chemical equation.
  1. Calculate the number of moles of hydrogen required in the above reaction to produce 0.6 moles of water. (hint: mole to mole ratio)
  1. Complete the following reactions.
  2. Write the phases of the products
  3. Write if the reaction goes to completion or not.
  4. Balance the equations.

a. KBr(aq) + Pb(ClO3)2 (aq) ⇨

b. KBr(aq) + I2(s)⇨

c. BaCl2(aq) + H2SO4 (aq) ⇨

d. H3PO4(aq) + Al(s) ⇨

  1. How many occupied energy levels do the elements in period three have?
  1. How many valence electrons do elements in Group 17 have?
  1. Which alkaline earth metal has the smallest radius?
  1. Which alkali metal belongs to the sixth period?
  1. Which Halogen belongs to the fourth period?
  1. Which noble gas has two valence electrons?
  1. Which element has the highest electronegativity value?
  1. Which element has the lowest ionization energy?
  1. Which element in group 15 has the greatest metallic characteristics?
  1. Which element in period 5 has the greatest metallic characteristics?
  1. What is similar for each member of a group?
  1. Which elements are metalloids in group fourteen?
  1. What type of bonding is present in a molecule carbon dioxide?
  1. What type of bonding is present in a molecule of water?
  1. What is the intermolecular attraction called between two water molecules?
  1. What is the intermolecular attraction called between two carbon dioxide molecules?
  1. Who has stronger intermolecular attractions water molecules or carbon dioxide molecules?
  1. What type of solute dissolves in water?
  1. Which solute will lower the freezing point of water more, KCl or CH3OH?
  1. Refer to table H. At a vapor pressure of 50 kPa, which of the four substances has the strongest intermolecular attractions?
  1. Refer to table G. How many grams of hydrochloric acid are dissolved in 100 grams of water at 600C?
  1. Refer to table G. What salt is saturated with 21g in 100g of water at 500C?
  1. Refer to table F. Is K2CrO4 soluble in water?
  1. Refer to table E and write the correct formula for Calcium acetate.
  1. Refer to table A. What is the standard pressure in kPa?
  1. Refer to table M. What is the color of litmus at a pH of 7?
  1. Refer to table B. What is the heat of fusion for water?
  1. Refer to table S. What element has the smallest radius?
  1. Refer to the periodic table. Which 2 elements act most like an ideal gas?
  1. Refer to table T. What is the Kelvin temperature for 750C?
  1. Refer to table T. What are the units for temperature when using the combined gas law?
  1. Refer to table J. What metal is least likely to react with sulfuric acid?

a. Bab. Lic. Pbd. Ag

  1. Refer to table F. Which salt is insoluble?

a. Ca(NO3)2b. CaSO4c. CaCl2d. Ca(OH)2

  1. When a calcium atom loses its valence electrons, the ion formed has an electron configuration which is the same as an atom of

a. Clb. Kc. Ard. Sc

  1. Which compound in the solid state has a high melting point and conducts electricity when it is liquefied?

a. CO2b. HClc. SiO2d. KCl

  1. Which element exists as monatomic molecule?

a. nitrogenb. chlorinec. oxygend. neon

  1. Element X forms the compound XCl3 and X2O3. In the Periodic Table, element X would most likely be found in Group
  2. 1 b. 2c. 13d. 14
  1. In which of the following periods of the Periodic Table are transition elements found?

a. 1b. 2c. 3d.4

  1. When elements of period 2 are considered in succession from left to right there is a general decrease in

a. ionization energyb. electronegativity

c. metallic character d. nonmetal character

  1. The approximate % mass of potassium in KHCO3

a. 19%b. 39%c. 24%d. 61%

  1. What is the molarity of a solution that contains 20. grams of CaBr2 in 0.50 liter of solution?

a. 0.50 Mb. 0.20 Mc. 5.0 Md. 10.M

  1. What is the molarity of a solution of KNO3 that contains 404 grams of KNO3 in 2.0 liters of solution?

a. 1.0 M b. 2.00Mc. 0.500Md. 4.00M

  1. Which compound is ionic?

a. HClb. CaCl2c. SO2d. N2O

  1. Which compound contains both ionic and covalent bonds?

a. KClb. NH4Clc. MgCl2d. CCl2

  1. The shape of CCl4 molecule is

a. linear b. triangularc. tetrahedrald. bent