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A scientific artifact. By bluegreen_fire. What is a chemical reaction?. It’s a process that always results in the combination of the chemical substances involved. The substance or substances initially involved are called reactants. The result of a chemical reaction is called the product.
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A scientific artifactBy bluegreen_fireWhat is a chemical reaction?
  • It’s a process that always results in the combination of the chemical substances involved.
  • The substance or substances initially involved are called reactants.
  • The result of a chemical reaction is called the product.
  • http://en.wikipedia.org/wiki/Chemical_reactionWhat is the law of mass conservation?
  • It says the mass of an object will remain constant, no matter what’s going on inside.
  • Or that mass and or matter cannot be created or destroyed.
  • http://en.wikipedia.org/wiki/Conservation_of_massWhat is the law of energy conservation?
  • The total amount of energy in an isolated system remains constant.
  • Energy cannot be created or destroyed.
  • http://en.wikipedia.org/wiki/Conservation_of_energyWhat is synthesis?
  • It’s a series of chemical reactions in order to get a product or several products.
  • It occurs from physical and chemical changes usually involving one or more reactions.
  • H2 +O2 H2O
  • http://en.wikipedia.org/wiki/Chemical_synthesisWhat is decomposition?
  • It is basically the opposite of synthesis, because instead of two or more chemicals coming together, they are breaking apart into their original elements.
  • H2O H2 + O2
  • http://en.wikipedia.org/wiki/Chemical_decomposition
  • What is combustion?
  • It’s a complex exothermic chemical reaction between a fuel and an oxidant.
  • The result of this is heat or both heat and light in the form of either a glow or flames.
  • This is an example of the combustion between hydrogen and oxygen
  • 2 H2 + O2 2 H2O(g) heat
  • http://en.wikipedia.org/wiki/CombustionWhat is single replacement?
  • It’s a reaction that occurs when two different cations switch places to combine with the same anion.
  • The link below has a video example of single replacement.
  • Zn + 2HCl ZnCl2 +H2
  • http://web.fccj.org/~smilczan/Two5/DR.htmlWhat is double replacement?
  • It occurs when two ionic compounds are mixed together.
  • In water the compounds split apart into their respective anions and cations
  • Now the cations have the opportunity to swap anions.
  • HCl(aq) + NaOH (aq) NaCl + H2O(l)
  • http://en.wikipedia.org/wiki/Double_replacement
  • What are exothermic and endothermic reactions?
  • An exothermic reaction releases energy in the form of heat, light, or sound.
  • A good example is fireworks.
  • C3H +5 O2 3 CO2 +4 H2O
  • http://www.science.uwaterloo.ca/~cchieh/cact/c120/reaction.html
  • An endothermic reaction must absorb energy to work.
  • Like when you combine urea and water, the two parts of an ice pack.
  • 3 H2 + N2 2 NH2
  • http://www.citycollegiate.com/chapter2a.htmTHE END!!!!!!! =]Bibliography!!!
  • http://en.wikipedia.org/wiki/Chemical_reaction
  • http://en.wikipedia.org/wiki/Conservation_of_mass
  • http://en.wikipedia.org/wiki/Conservation_of_energy
  • http://en.wikipedia.org/wiki/Chemical_synthesis
  • http://en.wikipedia.org/wiki/Chemical_decomposition
  • http://en.wikipedia.org/wiki/Combustion
  • http://web.fccj.org/~smilczan/Two5/DR.html
  • http://www.science.uwaterloo.ca/~cchieh/cact/c120/reaction.html
  • http://www.citycollegiate.com/chapter2a.htm
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