2.  A chemical reaction is a process.  What does this mean?  Give some examples of processes  Is baking a cake a process?  Name some ingredients of baking a cake  What is the product of this baking a cake process?  The cake – duh!  What symbol do we use to show processes? 

3.  In a chemical reaction, the  can be read as “produces” or “yields”  With a chem. Rx. (chemical reaction) something(s) new is produced from other chemical ingredients.  The arrow indicates the process of burning, combining, exploding, disintegrating….  To the left of the arrow is what goes into the reaction:  Reactants, separated by + signs  On the right: ?  Products, also separated by + signs

4.  Convert baking a cake into a chemical reaction  Flour(s) + water(l) + eggs(s) + milk(l), etc  cake(s) + good aroma filling the kitchen!(g)  Ingredients are reactants  Cake + aroma = products   = heat (produces, yields)  You know a chemical reaction has occurred because you can’t reverse it.

5.  Elements from periodic table  How to write ionic and covalent compound names  How to interpret word problems

6.  (l) = liquid state  (s) = solid state  (g) = gas  (aq) = aqueous (dissolved in water; solution)  The BrINClHOF’s  Guess what elements these are  bromine,  iodine,  nitrogen,  chlorine,  hydrogen,  oxygen,  fluorine

7.  The BrINClHOF’s  Always exist in pairs, when not combined with other elements  Gas at room temp.  Referred to by their normal chemical name even though they’re combined  ie. “chlorine” = Cl 2 (g)  “oxygen” = O 2 (g)  AKA: “HON and the halogens”  Or Hydrogen + 7

8.  When metals are just named (i.e., “lead”) this is simply the solid pure element (i.e., Pb(s))  When things are “bubbled in” that means a gas form of that element is being added:  Ex: “hydrogen is bubbled into a solution of…”  Is written as: H2(g) + …  …  “Solutions” are aqueous. Ex: “ a solution of lead(II)chloride…” =  PbCl2(aq)  Acids are aqueous

9. 1. Figure out which are reactants and which are products. 2. Write chemical formulas for all substances, separated by the  3. Add state of matter to each substance 4. Balance equation (to learn Friday)

10.  Zinc and aqueous lead(II)nitrate are combined in an aqueous solution to produce zinc nitrate and a lead precipitate. 1. zinc and lead(II)nitrate are reactants; zinc nitrate and lead are products 2. Zn + Pb(NO3)2  Zn(NO3)2 + Pb 3. Zn(s) + Pb(NO3)2(aq)  Zn(NO3)2(aq) + Pb(s) 4. Balancing Friday

11.  Carbon tetrachloride may be prepared by the reaction of natural gas, methane, and chlorine in the presence of ultraviolet light. Hydrochloric acid (HCl) is also a product of this reaction. 1. Carbon tetrachloride and hydrochloric acid are the products; methane and chlorine are the reactants 2. CH4 + Cl2  CCl4 + HCl 3. CH4(g) + Cl2(g)  CCl4(s) + HCl(aq) 4. To Balance Friday