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Chemical Reactions

Chemical Reactions. By: Trisha Livelsberger. Chemical Reaction. A chemical Reaction is the process of changing one substance into another A Chemical Reaction takes place because of the temperature of heat and/or energy. Chemical Equation.

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Chemical Reactions

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  1. Chemical Reactions By: Trisha Livelsberger

  2. Chemical Reaction • A chemical Reaction is the process of changing one substance into another • A Chemical Reaction takes place because of the temperature of heat and/or energy

  3. Chemical Equation • A chemical equation is a representation of a chemical reaction in which the reactants and products are expressed as formulas • We use them because its easier to read and can know what is happening

  4. Balancing • Should u balance a Chemical Equation? • Yes, because the law of conservation of mass states that mass if neither created nor destroyed in a chemical reaction

  5. Reactant vs. Product • During a chemical reaction the reactants change into products. • The chemical formulas on the left represent the starting substances (reactants) • The substances produced by reaction are on the right (product) • The arrow in the middle shows the reactant(s) to the product(s)

  6. Synthesis Reaction • This reaction involves 2 or more substances that react to form a single substance • A way to visualize this is a skinny bird (reactant) and a worm (reactant) makes a fat bird (product) • Symbol form is A + B  AB • Example- 8Fe + S8 8 FeS

  7. Decomposition Reactions • In a Decomposition reaction a compound breaks down into two or more simpler substances • A way to visualize or memorize this is think of an egg (reactant) at one time held a turtle has now opened (product)and egg shell (product) • Symbol form is AB  A + B • Example- 2 H2O  2 H2 + O2

  8. Single Displacement • In this reaction one element displaces another in a compound • The equation is A + BC  AC + B • Example- 2Li(s) + 2H2O(l) ® H2(g) + 2LiOH(aq)

  9. Double Displacement • The same as single displacement only with 2 compounds • The equation is AB + CD  AD + CB • Example- AgNO3 + HClAgCl + HNO3

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