Which of the following choices best classifies the following reaction: 2 Al  +  6 HCl → 2 AlCl3  +   3 H2 a. combination b. single replacement c. decomposition d. double replacement 

Which of the following statement(s) is true? a. evaporation only occurs at the surface of a liquid b. the boiling point of a liquid is dependent upon the atmospheric pressure c. evaporation is a cooling process d. increasing the amount of heat supplied to a boiling liquid will increase its temperature e. increasing the surface are of a liquid will increase evaporation

Hydrogen bonding is a special type of dipolar force that occurs when hydrogen is bonded to what 3 possible elements? (Use appropriate symbols for the elements. Use commas to separate the symbols)

According to Graham’s Law, which of the following gases would diffuse the fastest?

Which of the following ions does not have the same electron configuration as neon? Mg+2 Na+ O-2 Cl-1 Al+3

Which of the following represents the correct order of increasing inter-molecular strength?

Determine the oxidation number of the underlined element in the following ion. Be sure to indicate if the oxidation number is positive or negative. (HSO2)-1

Which of the following choices best classifies the following reaction:  Mg   +    2 HBr     MgBr2   +  H2 a. combination b. single replacement c. decomposition d. double replacement  e. redox f.  nonredox

On a separate sheet of paper, draw the Lewis dot structure for (NO2)-1. After completing the exam, upload your picture in the Unit 2 Exam pictures dropbox. 

According to the chemical naming system, which name is incorrect? Formula:                 Name: SnCl4               tin chloride SCl2                       sulfur dichloride Mg(NO3)2        magnesium nitrate Na2(CO3)         sodium carbonate FeBr2               iron (II) bromide