Kinds of Organic Reactions Addition reactions -two molecules combine to form a single new product with no atoms"left over" H H H Br These two C=C+H-Br→H-C-C-H add to give reactants... this product. H H HH Ethylene Bromoethane (an alkene) (an alkyl halide) ■ Elimination reactions-one molecule splits into two H Br H H This one ...gives these reactant... H-C-C-H Base +H一Br two products. HH H H Bromoethane Ethylene (an alkyl halide) (an alkene) 2004 Thomson-Brooks/ColeKinds of Organic Reactions „ Addition reactions – two molecules combine to form a single new product with no atoms “left over” „ Elimination reactions – one molecule splits into two