3.  All chemical reactions have two parts: Reactants and Products.

4.  Hydrogen and bromine gases react to yield hydrogen bromide.  Carbon monoxide and oxygen react to form carbon dioxide.

5.  Hydrogen gas and Chlorine gas combine to form hydrogen chloride gas.

6.  Write a balanced chemical equation for the reaction in which aqueous sodium hydroxide and aqueous calcium bromide produce solid calcium hydroxide and aqueous sodium bromide.

16.  1. All salts of Group IA, and ammonium are soluble.  2. All salts of nitrates, chlorates and acetates are soluble.  3. All salts of halides are soluble except those of silver(I), copper(I), lead(II), and mercury(I).  4. All salts of sulfate are soluble except for barium sulfate, lead(II) sulfate, and strontium sulfate.  5. All salts of carbonate, phosphate and sulfite are insoluble, except for those of group IA and ammonium.  6. All oxides and hydroxides are insoluble except for those of group IA, calcium, strontium and barium.  7. All salts of sulfides and insoluble except for those of Group IA and IIA elements and of ammonium.

17.  Write the ionic equations and the net ionic equation for the reactions…  Ba(NO 3 ) 2 (aq) + Na 2 CO 3 (aq)  BaCO 3 (s) + NaNO 3 (aq)  Write the chemical, complete ionic, and net ionic equations for the reaction between aqueous solutions of barium nitrate and sodium carbonate that forms the precipitate barium carbonate.

19.  Write a chemical, complete ionic, and net ionic equations for the reaction between hydrochloric acid and aqueous lithium hydroxide. This reaction produces water and aqueous lithium chloride.

20.  Aqueous barium chloride and aqueous sodium fluoride are mixed.  Aqueous copper (I) nitrate and aqueous potassium sulfide are mixed

21.  Aqueous sodium hydroxide and aqueous copper (II) chloride are mixed.  Aqueous sodium carbonate and aqueous calcium nitrate are mixed.  Aqueous sodium sulfate and aqueous potassium carbonate are mixed.