By: Mitchell Miller Chemical Reactions are a change in substance and a change in energy mainly affecting the atoms electrons hemtype.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. arth/geology/chem_reactions.html mistry)

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

Synthesis Decomposition Combustion Single replacement Double 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 increase ciber00/8th/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 Potential Energy is the stored energy of position possessed by an object such as a rubber band when left to sit it has no energy, but when stretch it has gained energy. ciber00/8th/mattr/sciber/chemtype.htm Class/energy/u5l1b.html

This reaction is when two or more simple substances combine to create a more complex substance ciber00/8th/mattr/sciber/chemtype.htm A Synthesis reaction would look something like: A + B → AB meaning A plus B combined equal A and B hesis

This reaction is when a complex reaction is broken into a smaller less complex parts. Basically the opposite of a synthesis /sciber00/8th/mattr/sciber/chemtype.ht m A decomposition reaction would look something like AB → A + B meaning AB is broken down into just A and B omposition

The reaction of oxygen with anything else. ions/Combustion.html

Single replacement is a reaction where a single uncombined element replaces another in a compound. A double Replacement is a reaction where parts of two compounds swap places to form two different compounds. Chemical formula example of single replacement Chemical formula example of a double replacement ciber00/8th/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 placement_reaction A double reaction formula would look like AB + CD → AD + CB meaning the B and the D swapped places placement_reaction

Potassium Permanganate and Glycerin cause an exothermic reaction eeIVM&eurl= fitch.wikispaces.com/Media- +Chemical+Rx&feature=player_embedded

Hg(HCN)2 causes an exothermic reaction kwck&eurl= fitch.wikispaces.com/Media- +Chemical+Rx&feature=player_embedded

2Mg + O2 --> 2MgO causes an exothermic reaction and is a synthesis reaction RaIZ__BhC6M&eurl= er-fitch.wikispaces.com/Media- +Chemical+Rx&feature=player_emb edded

Fe2O3 + 2Al --> Al2O3 + 2Fe causes an exothermic reaction WrCWLpRc1yM&eurl= boer-fitch.wikispaces.com/Media- +Chemical+Rx&feature=player_em bedded

K2CrO4 + 2AgNO3 --> Ag2CrO4 + 2KNO3 Pb(NO3)2 + 2KI → PbI2 + 2KNO3 both causing exothermic reactions =opY3FLrPTa4&eurl= boer-fitch.wikispaces.com/Media- +Chemical+Rx&feature=player_e mbedded

To react or not to react? THAT is the question! htm htm Chemical Reactions Reagent < Product (chemistry) How can you tell a chemical reaction is occurring? g g The Physics Classroom Tutorial Chemical synthesis Chemical decomposition Reaction Types: Combustion Single displacement reaction

Chemical decomposition Reaction Types: Combustion Single displacement reaction Double displacement reaction Media- Chemical Rx +Chemical+Rxhttp://wildeboer-fitch.wikispaces.com/Media- +Chemical+Rx Alien rock from Mars -fitch.wikispaces.com/Media-+Chemical+Rx&feature=player_embedded -fitch.wikispaces.com/Media-+Chemical+Rx&feature=player_embedded Exothermic reaction Potassium Permanganate r-fitch.wikispaces.com/Media- +Chemical+Rx&feature=player_embedded r-fitch.wikispaces.com/Media- +Chemical+Rx&feature=player_embedded

Burning of Magnesium Ribbon l= +Chemical+Rx&feature=player_embedded l= +Chemical+Rx&feature=player_embedded Thermite Experiment url= +Chemical+Rx&feature=player_embedded url= +Chemical+Rx&feature=player_embedded Double Replacement Reactions = +Chemical+Rx&feature=player_embedded = +Chemical+Rx&feature=player_embedded