Types of Reactions

The Six Different Types of Reactions Synthesis Reaction Decomposition Reaction Single Replacement Reaction Double Replacement Reaction Combustion Reaction Oxidation-Reduction Reaction

Synthesis Reaction A reaction where two or more substances react to produce one substance The reactants can be either elements or compounds A + B  AB

Synthesis Reaction 2Na + Cl 2  2NaCl AABB

Decomposition Reaction A reaction in which a compound breaks down into two or more simpler substances The products may be elements or compounds AB  A + B

Decomposition Reaction 2H 2 O  2H 2 + O 2 AABB

Single Replacement Reaction A reaction in which one element takes the place of another element in a compound A + BC  B + AC

Single Replacement Reaction 2K + 2H 2 O  H 2 + 2KOH The Potassium (K) replaces the Hydrogen in water (H 2 O) to form Potassium Hydroxide (KOH) AABBCC

Double Replacement Reaction A reaction in which two different compounds exchange ions and create two new compounds AB + CD  AD CB

Double Replacement Reaction CaCO 3 + 2HCl  CaCl 2 + H 2 CO 3 AABBCCDD

Combustion Reaction A reaction in which a substance reacts rapidly with oxygen This often producing heat and light Combustion reactions usually produce a compound + H 2 O

Combustion Reaction Methane reacting with oxygen to produce Carbon Dioxide and H 2 O CH 4 + 2O 2  CO 2 + 2H 2 O

Oxidation - Reduction Oxidation – Reduction reactions involve an atom or molecule losing or gaining an electron Usually involves a metal and oxygen

Oxidation - Reduction The Oxidation-Reduction reaction between Iron and Oxygen is often known as Rust

What’s Going on Today? -Chemical Reaction practice worksheet – Due at the end of the period -Vocabulary -Being graded tomorrow -Chapter 7 Review Sheet For you to keep! Tomorrow is the LAST day for test corrections!