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Chemical Reactions

Chemical Reactions. Created By: Dawn Hedrick. What Exactly are Chemical Reactions?. A change in which a substance is changed into one or more new substances. Why do Such Reactions Occur?.

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Chemical Reactions

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  1. Chemical Reactions Created By:Dawn Hedrick

  2. What Exactly are Chemical Reactions? • A change in which a substance is changed into one or more new substances.

  3. Why do Such Reactions Occur? • So that way atoms can gain stability. Oxygen will react with carbon because the product, carbon dioxide, has more stability.

  4. What is a Chemical Equation? Why do we use them? • A chemical equation is an easy and useful way of describing a change, particularly what is present before and after said change. • We use them to summarize easily what events occur.

  5. Should They be Balanced? • Equations should always be balanced as to show that mass is conserved. *Remember the Law of Conservation of Mass*

  6. Reactants and Products? • Reactant--- Any substance that undergoes a chemical change in a given reaction. • Product--- A substance obtained from another substance through chemical change.

  7. What IS That Funny Little Jigger? • Carbon + Oxygen Carbon Dioxide • That arrow is showing the transition from the substances being separated to the substances undergoing a reaction and turning into another substance.

  8. Synthesis Reactions • A reaction when there is a combination of two or more substances and a compound results. • C + O2 CO2 • A + B AB

  9. Decomposition Reactions • The opposite of synthesis. It is when a compound is broken down into simpler substances. • CO2 C + O • AB A + B

  10. Single Displacement Reaction • A metal replaces a metal, or a nonmetal replaces a nonmetal. • H + CO2 H2O + C • A + BC C + AB

  11. Double Displacement Reaction • A metal replaces a metal, and a nonmetal replaces a nonmetal, except this time there are two being replaced. • Ba2F + Zn2Cl Ba2Cl + Zn2F • AB + XY AY + XB

  12. Works Cited • "Types of Reactions." Chemestry Tutor. 19 Dec. 2008 <http://library.thinkquest.org/2923/react.html>. • Physical Science. Pearson Education. 191-202.

  13. END

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