By Aiyana Exothermic reactions release energy They are hot and may steam Exothermic Reactions Formula of reaction: 2 Al( s ) + 3 Br 2 ( l ) --> 2 AlBr.

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Presentation transcript:

By Aiyana Exothermic reactions release energy They are hot and may steam Exothermic Reactions Formula of reaction: 2 Al( s ) + 3 Br 2 ( l ) --> 2 AlBr 3 ( s ) (Aluminum and liquid Bromine)

Endothermic Reaction Endothermic reaction absorb energy They feel very cold Formula for reaction: H2O + Ammonium Nitrate H2OAN (Water and ammonium Nitrate )

Synthesis In a synthesis reaction two or more chemicals bond together forming one new substance. Generic formula: A + B AB Formula for reaction: 2K (s) + Cl 2(g) 2KCl (s ) (This is potassium chloride and chlorine gas)

Decomposition In a decomposition reaction one substance breaks down into two or more separate substances Generic Formula: AB A + B Formula of Reaction: 2 HgO 2 Hg + O2 (Oxygen and Mercury)

Single Replacement In a single replacement reaction one element knocks another element out of a compound. Generic Formula: AB + X AX + B Formula of Reaction: Zn + 2HCl H2 + ZnCl2 (Zinc and Hydrochloric acid)

Double Replacement In a double replacement the two compounds switch ions with each other Generic formula: AB + XY AX + BY Formula for reaction: 2KI(aq) + Pb(NO 3 ) 2 (aq) 2KNO 3 (aq) +PbI(s) (Potassium iodine and lead and nitrogen oxygen)

Combustion A combustion reaction is when a compound burns in oxygen gas Oxygen will always be a reactant Generic formula: A + O2 Formula for reaction: CH > CO2 + 2H2O (Carbon hydrogen and oxygen)

R ESOURCES /jchemed.chem.wisc.edu/JCESoft/CCA/CCA3/MAIN/ALBR/PAGE1.HTM&usg=__-fI12Rr1iq- Eac8kd3tBxV0SYDM=&h=480&w=640&sz=34&hl=en&start=17&um=1&tbnid=lT78VAOstfnePM:&tbnh=103&tbnw=137&prev=/images%3Fq%3D Exothermic%2Breaction%26hl%3Den%26safe%3Dactive%26sa%3DN%26um%3D1 chemistry.wikispaces.com/K.%2BSoo%2BDecomposition%2Breaction.%3Ff%3Dprint&usg=__zU- OBXVt5Yt7Aee7ZxZbtlXIB4E=&h=654&w=980&sz=620&hl=en&start=36&um=1&tbnid=KtjgVNKIZNR90M:&tbnh=99&tbnw=149&prev=/images %3Fq%3Dsynthesis%2Breaction%26ndsp%3D21%26hl%3Den%26safe%3Dactive%26sa%3DN%26start%3D21%26um%3D1 chemed.chem.wisc.edu/JCESoft/CCA/CCA3/MAIN/CLKI/PAGE1.HTM&usg=__UdPU59fREuNm_KyY_vGQ668a8Z8=&h=480&w=640&sz=32&hl=en &start=15&um=1&tbnid=m78I6sKk4b6xTM:&tbnh=103&tbnw=137&prev=/images%3Fq%3Dpotassium%2Band%2Bchlorine%2Breaction%26gbv%3 D2%26hl%3Den%26safe%3Dactive%26sa%3DN%26um%3D ps/chm/100/dgodambe/thedisk/chemrxn/cuso4p.jpg&imgrefurl= ps/chm/100/dgodambe/thedisk/chemrxn/7perform.htm&usg=___VID2r90Oxhx3ayb3ezlMWBRtqE=&h=363&w=455&sz=30&hl=en&start=56&um=1 &tbnid=AWjG07n9llDpFM:&tbnh=102&tbnw=128&prev=/images%3Fq%3DZinc%2Band%2Bcopper%2Bsulfate%2Breaction%26gbv%3D2%26ndsp% 3D21%26hl%3Den%26safe%3Dactive%26sa%3DN%26start%3D42%26um%3D1D X200.jpg&imgrefurl= reaction.html&usg=__OqjRUQK3gCVb5p7jlY5qDip4Iz0=&h=200&w=200&sz=38&hl=en&start=49&um=1&tbnid=L- MyDUt9l7_ALM:&tbnh=104&tbnw=104&prev=/images%3Fq%3Dcombustion%2Bchemical%2Breaction%2527%26ndsp %3D18%26hl%3Den%26sa%3DN%26start%3D36%26um%3D1