1. CHEMICAL REACTIONS CHAPTER 11

2. WHAT ARE THE PARTS OF A CHEMICAL REACTION? 1.REACTANTS 2.PRODUCTS 3.  YIELD; SEPARATES THE REACTANTS FROM THE PRODUCTS 4.   REVERSIBLE REACTION 5.(AQ) AQUEOUS: SOMETHING DISSOLVED IN WATER (S) SOLID, (L) LIQUID, (G) GAS 1.+ SEPARATES EITHER TWO PRODUCTS OR TWO REACTANTS

3. WHAT AFFECT DOES A CATALYST HAVE ON A CHEMICAL REACTION? 1. ENZYMES/PROTEINS 2. CATALYST LOWERS THE ACTIVATION ENERGY NEEDED TO START A CHEMICAL REACTION 3. SPEED UP CHEMICAL REACTIONS WITHOUT BEING USED UP 4. NOT A REACTANT OR A PRODUCT; WRITTEN ABOVE THE ARROW IN A CHEMICAL REACTION

4. HOW ARE CHEMICAL EQUATIONS BALANCED? 1. BEGIN BY WRITING THE SKELETON EQUATION 2. DO NOT CHANGE THE FORMULA OR SUBSCRIPTS 3. CAN CHANGE THE COEFFICIENT 4. THE PRODUCTS MUST EQUAL THE REACTANTS; MUST OBEY THE LAW OF CONSERVATION OF MASS

5. WHAT ARE THE FIVE KINDS OF CHEMICAL REACTIONS AND HOW DO THEY DIFFER? 1.SYNTHESIS/COMBINATION: TWO OR MORE ELEMENTS OR COMPOUNDS COMBINE TO FORM A SINGLE COMPOUND 2.DECOMPOSITION: COMPOUNDS BREAK DOWN INTO SIMPLER SUBSTANCES 3.SINGLE REPLACEMENT: ONE ELEMENT REPLACES ANOTHER IN A COMPOUND 4.DOUBLE REPLACEMENT: WHEN DIFFERENT ATOMS IN TWO DIFFERENT COMPOUNDS TRADE PLACES 5.COMBUSTION: A CHEMICAL CHANGE IN WHICH AN ELEMENT OR A COMPOUND REACTS WITH OXYGEN PRODUCING HEAT AND LIGHT; OXYGEN IS ALWAYS INVOLVED AS A REACTANT

6. HOW DO YOU PREDICT THE PRODUCTS OF A CHEMICAL REACTION? USE THE NUMBER OF ELEMENTS AND OR COMPOUNDS REACTING TO PREDICT REACTION TYPE AND POSSIBLE PRODUCTS 1.TWO ELEMENTS OR TWO COMPOUNDS USUALLY COMBINE TO FORM A SINGLE COMPOUND 2.A SINGLE BINARY COMPOUND OR A COMPOUND WITH A POLYATOMIC ION FORM TWO OR MORE ELEMENTS AND OR COMPOUNDS 3.AN ELEMENT OR A COMPOUND FORMS A DIFFERENT ELEMENT AND A NEW COMPOUND 4.TWO IONIC COMPOUNDS WILL EXCHANGE CATIONS TO FORM TWO DIFFERENT COMPOUNDS