Increasing the pressure of a fixed amount of gas at constant temperature has what effect on the volume of the gas? (Response should be one of the following: increases, decreases or no effect)

Which element is oxidized in the following reaction? 2 NaBr  +   Cl2   →  2 NaCl   +  Br2

The correct formula of an ionic compound containing Fe+3 and (ClO4)-1 is

A reaction in which a single substance is broken down into two or more simpler substances is a:

Which of the following choices best classifies the following reaction:  Na2(SO4)   +   Pb(NO3)2    Pb(SO4)  +  2 Na(NO3) a. combination b. single replacement c. decomposition d. double replacement  e. redox f.  nonredox

What is the freezing point of water in °C?

Which one of the following statements describing the general properties of liquids is false?

Balance the equation below by placing the correct coefficients in the blanks. Your response should list the coefficients in order from left to right, separated only by commas; no spaces. If no coefficient belongs in a blank, represent it with a “1”. For example the equation 2 H2O →  2 H2+O2 would be represented as 2,2,1.    ____H2(SO4) +____Cr   →  ____Cr2(SO4)3 + ____H2  

Which of the following choices best classifies the following reaction:  Na2(SO4)   +   Pb(NO3)2    Pb(SO4)  +  2 Na(NO3) a. combination b. single replacement c. decomposition d. double replacement  e. redox f.  nonredox

The change from the liquid state to the vapor state that occurs only at the surface of the liquid is called ____.