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

In an endothermic reaction, is heat absorbed or is heat given off?

Determine the oxidation number of the underlined element in the following compound. Be sure to indicate if the oxidation number is positive or negative. NaNO3

On a separate sheet of paper, draw the Lewis dot structure for PBr3.  After completing the exam, upload your picture in the Unit 2 Exam pictures dropbox. 

Look at the heating/cooling curve for water diagrammed below. Between which two letters is the phase changing of condensation taking place? Response should be in the form “x and y”. 

How does the kinetic energy of a particle change if the particle’s temperature remains constant?

According to the chemical naming system, which name is incorrect? Formula:                 Name: SnCl4              tin (IV) chloride SO2                       sulfur dioxide Mg(CO3)         magnesium carbonate Na2(SO4)        disodium sulfate FeBr2              iron (II) bromide  

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.  ____H3(PO4)  +  ____ Rb(OH)   →   ____H2O + ____Rb3 (PO4)   

Experiments by Robert Boyle showed that the volume of a gas at a constant temperature:

Experiments by Gay-Lussac showed that the pressure of a gas at a constant volume: