2. - a process where one or more substances (elements) rearrange themselves to form a new substance. http://dictionary.reference.com/browse/chemical%20reaction http://www.sac.edu/students/support_services/ats/students/mgironS16/HM00368_%5B1%5D.gif

3.  What part of atoms are affected? In a chemical reaction the electrons are affected by forming and breaking chemical bonds. http://en.wikipedia.org/wiki/Chemical_reaction  What is happening during a chemical Rx? 1. Reactants react to form products. reactants - the materials that are their before the reaction products - the substances that are formed from the reaction 2. Substances that are formed from the reaction http://wildeboer- fitch.wikispaces.com/Chemical+Reaction+Primer

4.  Bubbling  Increase or decrease in temperature  Light  Change in Color  Energy Produced  Gas Formed  Formation of Precipitate (precipitate - a liquid added to a liquid, forming a solid which is the precipitate) http://wiki.answers.com/Q/What_are_the_5_signs_of_a_chemical_reaction http://images.google.com/imgres?imgurl=http://students.ed.uiuc.edu/ljgriffi/project/grifunit3/1REPLACE.GIF&imgrefurl=http://students.ed.uiuc.edu/ljgriffi/project/grifunit3/griffchemicalreaction s.htm&usg=__3hHoM5XfiXPEqQ9kJMC8UktYZoc=&h=288&w=364&sz=17&hl=en&start=16&um=1&tbnid=AgaL_6Rr0U793M:&tbnh=96&tbnw=121&prev=/images%3Fq%3Dche mical%2Bdecomposition%2Breaction%26gbv%3D2%26um%3D1%26hl%3Den

5.  The Law of Conservation of Mass – “The principle that in any closed system subjected to no external forces, the mass is constant irrespective of its changes in form; the principle that matter cannot be created or destroyed.”  In other words matter can be rearranged but not destroyed or created. http://en.wikipedia.org/wiki/Conservation_of_mass http://dictionary.reference.com/browse/conservation%20of%20mass

6.  Chemical reactions are changes that result in one or more new substances.  These changes always have a change in energy.  This means that when a chemical reaction occurs energy is either given off or taken in.  Energy reactions can be described as endothermic and exothermic reactions. http://www.fordhamprep.com/gcurran/sho/sho/lessons/lesson16.htm

7.  Exothermic - a chemical reaction that releases heat  Releases energy in the form of heat, light and electricity  EX- Rusting Iron http://jchemed.chem.wisc.edu/JCESOFT/CCA/CCA3/STILLS/GLYCER/GLYCER/64JPG4 8/7.JPG http://dictionary.reference.com/browse/exothermic http://en.wikipedia.org/wiki/Exothermic_reaction http://antoine.frostburg.edu/chem/senese/101/thermo/faq/exothermic-endothermic- examples.shtml  Endothermic – a chemical reaction that absorbs heat  Gains energy in the form of heat  Need heat to be performed  EX - Cooking an egg Endothermic reaction of barium hydroxide and ammonium salt. http://genchem.chem.wisc.edu/demonstrations/Movies/endosm.gif http://dictionary.reference.com/browse/endothermic http://en.wikipedia.org/wiki/Endothermic

8.  Potential Energy – energy that is stored and can be transformed into other forms of energy such as heat, light, electricity and sound. http://projectsol.aps.com/images/common/digestion2.gif http://en.wikipedia.org/wiki/Potential_energy http://dictionary.reference.com/browse/potential%20energy

9.  Energy that is needed to initiate the reaction http://www.bio-medicine.org/biology-definition/Activation_energy/ http://media-2.web.britannica.com/eb-media/28/4728-004-3ED6A907.gif

10.  Synthesis  Decomposition  Combustion  Single Replacement  Double Replacement

11.  When two or more substances combine to form a more intricate compound.  The opposite of Decomposition  Basic formula - A +B  AB  Example - Hydrogen Gas + Oxygen Gas = Water  Formula - http://www.usoe.k12.ut.us/curr/science/sciber00/8th/matter/sciber/chemtype.htm http://en.wikipedia.org/wiki/Chemical_synthesis

12.  The process of burning – the production of heat and light  It is an exothermic reaction  Example - CH 4 + 2O 2 + 7.52N 2 → CO 2 + 2H 2 O + 7.52N 2 + heat http://library.thinkquest.org/2923/react.html http://content.answers.com/main/content/wp/en-commons/thumb/f/f0/200px-Et_baal.jpg http://en.wikipedia.org/wiki/Combustion http://dictionary.reference.com/browse/combustion The flames are caused from the fuel that is going through combustion (burning).

13.  A single, uncombined element replaces another element in a compound  Basic Formula - A+BC  AC+B  Example – When Zinc combines with Hydrochloric Acid, the Hydrogen is replaced by Zinc.  Formula - http://www.usoe.k12.ut.us/curr/science/sciber00/8th/matter/sciber/chemtype.htm http://wiki.answers.com/Q/What_is_a_single_replacement_reaction Visual Single Replacement 

14.  A compound that is broken up into two different products. (two at the least)  The opposite of Synthesis  Basic Formula - AB  A + B  Example - Water broken down into hydrogen gas and oxygen gas  Formula – http://www.usoe.k12.ut.us/curr/science/sciber00/8th/matter/sciber/chemtype.htm http://library.thinkquest.org/2923/react.html

15.  Two compounds swap places in order to form two new compounds  Basic Formula – AB + CD  AD + CB  Example – When Silver Nitrate combines with Sodium Chloride, Silver Chloride and Sodium Nitrate are formed because the Silver and Sodium swap places.  Formula – http://www.usoe.k12.ut.us/curr/science/sciber00/8th/matter/sciber/chemtype.htm  Visual Double Replacement

16. Chemical Reaction Definition – http://dictionary.reference.com/browse/chemical%20reaction Chemical Reaction Basics – http://en.wikipedia.org/wiki/Chemical_reaction http://wildeboer-fitch.wikispaces.com/Chemical+Reaction+Primer Signs of a Chemical Reaction – http://wiki.answers.com/Q/What_are_the_5_signs_of_a_chemical_reaction The Law of Conservation of Mass – http://en.wikipedia.org/wiki/Conservation_of_mass http://dictionary.reference.com/browse/conservation%20of%20mass Chemical Potential Energy – http://en.wikipedia.org/wiki/Potential_energy Endo and Exothermic Reactions – http://dictionary.reference.com/browse/endothermic http://en.wikipedia.org/wiki/Endothermic http://dictionary.reference.com/browse/exothermic http://en.wikipedia.org/wiki/Exothermic_reaction http://antoine.frostburg.edu/chem/senese/101/thermo/faq/exothermic-endothermic-examples.shtml

17. Activation Energy – http://www.bio-medicine.org/biology-definition/Activation_energy/ Synthesis Reaction – http://www.usoe.k12.ut.us/curr/science/sciber00/8th/matter/sciber/chemtype.htm Combustion Reaction – http://library.thinkquest.org/2923/react.html http://content.answers.com/main/content/wp/en-commons/thumb/f/f0/200px-Et_baal.jpg http://en.wikipedia.org/wiki/Combustion Single Replacement Reaction – http://www.usoe.k12.ut.us/curr/science/sciber00/8th/matter/sciber/chemtype.htm http://wiki.answers.com/Q/What_is_a_single_replacement_reaction Decomposition Reaction- http://www.usoe.k12.ut.us/curr/science/sciber00/8th/matter/sciber/chemtype.htm Double Replacement Reaction – http://www.usoe.k12.ut.us/curr/science/sciber00/8th/matter/sciber/chemtype.htm