By: Mitchell Miller

Chemical Reactions are a change in substance and a change in energy mainly affecting the atoms electrons

http://www.usoe.k12.ut.us/CURR/Science/sciber00/8th/matter/sciber/chemtype.htm

A chemical reaction happens when molecules interact causing a chemical change. This change means that the molecules that interacted are combined to form something different. During this a reactant (a substance or compound consumed during a chemical reaction) is consumed creating a product (a substance that forms as a result of a chemical reaction) that has the same mass as the product according to the law of conservation of mass which states that the mass of an isolated system will remain constant no matter what happens inside. Relating that no matter which reaction occurs the matter will remain in number the same just will appear differently such as fire turns wood into ashes and smoke and does not remove the wood from existance altogether.

http://www.windows.ucar.edu/tour/link=/earth/geology/chem_reactions.html

http://en.wikipedia.org/wiki/Product_(chemistry)http://en.wikipedia.org/wiki/Reagent

http://wiki.answers.com/Q/How_can_you_tell_a_chemical_reaction_is_occurring

•A Temperature change • A color change•An insoluble substance is formed•A gas is given off

Activation energy is the energy required to begin a certain Chemical reaction like Magnesium burning is Magnesium reacting with Oxygen to create magnesium oxide using heat (fire) to start the reaction

http://www.bio-medicine.org/biology-definition/Activation_energy/

Burning Magnesium

SynthesisDecompositionCombustionSingle replacementDouble replacement

Each of these can exothermic or endothermic

During a reaction something happens with the energy making it endothermic or exothermic:Endothermic- Energy is absorbed (often it is heat or electrical energy)Exothermic- Energy is released from the reactants often resulting in a heat increasehttp://www.usoe.k12.ut.us/CURR/Sci

ence/sciber00/8th/mattr/sciber/chemtype.htm

During a reaction something happens with the energy making it endothermic or exothermic:Endothermic- Energy is absorbed (often it is heat or electrical energy)Exothermic- Energy is released from the reactants often resulting in a heat increase

Chemical potential energy is the energy in a chemical that comes from the arrange of atoms and molecules in objects that is released of transferred by a chemical reaction

http://www.usoe.k12.ut.us/CURR/Science/sciber00/8th/mattr/sciber/chemtype.htm

http://en.wikipedia.org/wiki/Potential_energy#Chemical_potential_energy

This is a reaction occurs when one or more chemicals combine to form a new more complex chemicalhttp://www.usoe.k12.ut.us/CURR/Sci

ence/sciber00/8th/mattr/sciber/chemtype.htm

A Synthesis reaction would look something like: A + B → AB meaning A plus B equals A and B together

http://en.wikipedia.org/wiki/Chemical_synthesis

This reaction is when a complex chemical is split into smaller parts. The opposite of Synthesis

http://www.usoe.k12.ut.us/CURR/Science/sciber00/8th/mattr/sciber/chemtype.htm

A decomposition reaction would look something like AB → A + B meaning AB is broken down into just A and B alone

http://en.wikipedia.org/wiki/Chemical_decomposition

A reaction that reacts with O2 present and always has a flame and is exothermic is combustion http://dbhs.wvusd.k12.ca.us/webdocs

/Equations/Combustion.html

A house collapsing from a fire inside the house

A Single replacement is a reaction where a single element replaces another in a different compound that creates something different and new.

A double Replacement is a reaction where parts of two compounds swap places to form two different and new compounds.

Chemical formula example of single replacement

Chemical formula example of a double replacement

http://www.usoe.k12.ut.us/CURR/Science/sciber00/8th/mattr/sciber/chemtype.htm

A Single replacement reaction formula would look something like A + BX → AX + B meaning the A has swapped with the B creating something newhttp://en.wikipedia.org/wiki/Sing

le_replacement_reaction

A double reaction formula would look like AB + CD → AD + CB meaning the B and the D swapped places

http://en.wikipedia.org/wiki/Double_replacement_reaction

Potassium Permanganate and Glycerin cause an exothermic reaction

http://wildeboer-fitch.wikispaces.com/Media-+Chemical+Rx

http://www.youtube.com/watch?v=80Q3GgeeIVM&eurl=http://wildeboer-fitch.wikispaces.com/Media-+Chemical+Rx&feature=player_embedded

Hg(HCN)2 causes an exothermic reaction

http://wildeboer-fitch.wikispaces.com/Media-+Chemical+Rx

http://www.youtube.com/watch?v=JAe6000kwck&eurl=http://wildeboer-fitch.wikispaces.com/Media-+Chemical+Rx&feature=player_embedded

2Mg + O2 --> 2MgO causes an exothermic reaction and is a synthesis reaction

http://wildeboer-fitch.wikispaces.com/Media-+Chemical+Rx

http://www.youtube.com/watch?v=RaIZ__BhC6M&eurl=http://wildeboer-fitch.wikispaces.com/Media-+Chemical+Rx&feature=player_embedded

Fe2O3 + 2Al --> Al2O3 + 2Fe causes an exothermic reaction

http://wildeboer-fitch.wikispaces.com/Media-+Chemical+Rx

http://www.youtube.com/watch?v=WrCWLpRc1yM&eurl=http://wildeboer-fitch.wikispaces.com/Media-+Chemical+Rx&feature=player_embedded

K2CrO4 + 2AgNO3 --> Ag2CrO4 + 2KNO3Pb(NO3)2 + 2KI → PbI2 + 2KNO3 both causing

exothermic reactions

http://wildeboer-fitch.wikispaces.com/Media-+Chemical+Rx

http://www.youtube.com/watch?v=opY3FLrPTa4&eurl=http://wildeboer-fitch.wikispaces.com/Media-+Chemical+Rx&feature=player_embedded

To react or not to react? THAT is the question! http://www.usoe.k12.ut.us/CURR/Science/sciber00/8th/matter/sciber/chemtype.htm

Chemical Reactions http://www.windows.ucar.edu/tour/link=/earth/geology/chem_reactions.html

Reagent http://en.wikipedia.org/wiki/Reagent Product (chemistry) http://en.wikipedia.org/wiki/Product_(chemistry) How can you tell a chemical reaction is occurring?

http://wiki.answers.com/Q/How_can_you_tell_a_chemical_reaction_is_occurring

The Physics Classroom Tutorial http://www.glenbrook.k12.il.us/gbssci/phys/Class/energy/u5l1b.html

Chemical synthesis http://en.wikipedia.org/wiki/Chemical_synthesis Chemical decomposition

http://en.wikipedia.org/wiki/Chemical_decomposition Reaction Types: Combustion

http://dbhs.wvusd.k12.ca.us/webdocs/Equations/Combustion.html Single displacement reaction

http://en.wikipedia.org/wiki/Single_replacement_reaction

Chemical decomposition http://en.wikipedia.org/wiki/Chemical_decomposition

Reaction Types: Combustion http://dbhs.wvusd.k12.ca.us/webdocs/Equations/Combustion.html

Single displacement reaction http://en.wikipedia.org/wiki/Single_replacement_reaction

Double displacement reaction http://en.wikipedia.org/wiki/Double_replacement_reaction

Media- Chemical Rx http://wildeboer-fitch.wikispaces.com/Media-+Chemical+Rx

Alien rock from Mars http://www.youtube.com/watch?v=JAe6000kwck&eurl=http://wildeboer-fitch.wikispaces.com/Media-+Chemical+Rx&feature=player_embedded

Exothermic reaction Potassium Permanganate http://www.youtube.com/watch?v=80Q3GgeeIVM&eurl=http://wildeboer-fitch.wikispaces.com/Media-+Chemical+Rx&feature=player_embedded

Burning of Magnesium Ribbon http://www.youtube.com/watch?v=RaIZ__BhC6M&eurl=http://wildeboer-fitch.wikispaces.com/Media-+Chemical+Rx&feature=player_embedded

Thermite Experiment http://www.youtube.com/watch?v=WrCWLpRc1yM&eurl=http://wildeboer-fitch.wikispaces.com/Media-+Chemical+Rx&feature=player_embedded

Double Replacement Reactions http://www.youtube.com/watch?v=opY3FLrPTa4&eurl=http://wildeboer-fitch.wikispaces.com/Media-+Chemical+Rx&feature=player_embedded

Chemistry comes alive! (picture) http://jchemed.chem.wisc.edu/JCESOFT/CCA/CCA3/STILLS/MAGAIR/MAGAIR/64JPG48/2.JPG

Bio-Medicine www.bio-medicine.org/biology-definition/

Activation_energy