Chemical Reactions
Do you remember what  Physical Properties are??? <ul><li>Color </li></ul><ul><li>Shape </li></ul><ul><li>Mass </li></ul><u...
After a PHYSICAL CHANGE,  the appearance of the substance may be different but it is still the same substance <ul><li>EXAM...
After a CHEMICAL CHANGE,  a new substance is produced with NEW PROPERTIES. These properties are different from the origina...
<ul><li>Here are some signs that a  CHEMICAL CHANGE took place: </li></ul><ul><li>New color  </li></ul><ul><li>New odor or...
All chemical reactions <ul><li>have two parts </li></ul><ul><li>Reactants - the substances you start with </li></ul><ul><l...
Balanced Equation <ul><li>Atoms can’t be created or destroyed </li></ul><ul><li>All the atoms we start with we must end up...
<ul><li>Synthesis Reaction </li></ul><ul><li>Decomposition Reaction </li></ul><ul><li>Single Displacement Reaction </li></...
SYNTHESIS REACTION <ul><li>In a synthesis reaction two or more simple substances combine to form a more complex substance....
DECOMPOSITION REACTION   <ul><li>In a decomposition reaction a more complex substance breaks down into its more simple par...
SINGLE DISPLACEMENT REACTION   <ul><li>In a single displacement reaction a single uncombined element replaces another in a...
DOUBLE REPLACEMENT REACTION   <ul><li>In a double displacement reaction parts of two compounds switch places to form two n...
Combustion Reaction
Examples <ul><li>H 2  + O 2      </li></ul><ul><li>H 2 O   </li></ul><ul><li>Zn + H 2 SO 4    </li></ul><ul><li>HgO   ...
Examples <ul><li>AgNO 3  + Cu    Cu(NO 3 ) 2  + Ag </li></ul><ul><li>Mg + N 2     Mg 3 N 2  </li></ul><ul><li>P + O 2   ...
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chem

  1. 1. Chemical Reactions
  2. 2. Do you remember what Physical Properties are??? <ul><li>Color </li></ul><ul><li>Shape </li></ul><ul><li>Mass </li></ul><ul><li>State of Matter </li></ul><ul><li>Length </li></ul><ul><li>Magnetism </li></ul>
  3. 3. After a PHYSICAL CHANGE, the appearance of the substance may be different but it is still the same substance <ul><li>EXAMPLES: </li></ul><ul><li>Cutting a steak </li></ul><ul><li>Cracking an egg </li></ul><ul><li>Chopping wood </li></ul><ul><li>Bending a metal </li></ul><ul><li>Tearing paper </li></ul>
  4. 4. After a CHEMICAL CHANGE, a new substance is produced with NEW PROPERTIES. These properties are different from the original substance! <ul><li>EXAMPLES: </li></ul><ul><li>Burning wood </li></ul><ul><li>Frying an egg </li></ul><ul><li>Digesting a steak </li></ul><ul><li>Rusting of metal </li></ul>
  5. 5. <ul><li>Here are some signs that a CHEMICAL CHANGE took place: </li></ul><ul><li>New color </li></ul><ul><li>New odor or smell </li></ul><ul><li>Gas bubbles or smoke </li></ul><ul><li>An increase or decrease in temperature </li></ul>
  6. 6. All chemical reactions <ul><li>have two parts </li></ul><ul><li>Reactants - the substances you start with </li></ul><ul><li>Products- the substances you end up with </li></ul><ul><li>The reactants turn into the products. </li></ul><ul><li>Reactants  Products </li></ul>
  7. 7. Balanced Equation <ul><li>Atoms can’t be created or destroyed </li></ul><ul><li>All the atoms we start with we must end up with </li></ul><ul><li>A balanced equation has the same number of each element on both sides of the equation. </li></ul>
  8. 8. <ul><li>Synthesis Reaction </li></ul><ul><li>Decomposition Reaction </li></ul><ul><li>Single Displacement Reaction </li></ul><ul><li>Double Displacement Reaction </li></ul><ul><li>Combustion Reaction </li></ul><ul><li>TYPES OF CHEMICAL REACTIONS </li></ul>
  9. 9. SYNTHESIS REACTION <ul><li>In a synthesis reaction two or more simple substances combine to form a more complex substance. </li></ul><ul><li>The reaction through the equation: </li></ul><ul><li>reactant + reactant -------> product </li></ul><ul><li>A + B -------> AB </li></ul>
  10. 10. DECOMPOSITION REACTION <ul><li>In a decomposition reaction a more complex substance breaks down into its more simple parts. </li></ul><ul><li>One reactant yields 2 or more products. Basically, synthesis and decomposition reactions are opposites. reactant -------> product + product </li></ul><ul><li>AB -------> A + B </li></ul>
  11. 11. SINGLE DISPLACEMENT REACTION <ul><li>In a single displacement reaction a single uncombined element replaces another in a compound. </li></ul><ul><li>Two reactants yield two products. </li></ul><ul><li>reactant + reactant ---------> product + product </li></ul><ul><li>AB + C -------> AC + B </li></ul>
  12. 12. DOUBLE REPLACEMENT REACTION <ul><li>In a double displacement reaction parts of two compounds switch places to form two new compounds. </li></ul><ul><li>Two reactants yield two products. </li></ul><ul><li>reactant + reactant ---------> product + product </li></ul><ul><li>AB + CD -------> AC + BD </li></ul>
  13. 13. Combustion Reaction
  14. 14. Examples <ul><li>H 2 + O 2  </li></ul><ul><li>H 2 O  </li></ul><ul><li>Zn + H 2 SO 4  </li></ul><ul><li>HgO  </li></ul><ul><li>KBr +Cl 2  </li></ul><ul><li>AgNO 3 + NaCl  </li></ul><ul><li>Mg(OH) 2 + H 2 SO 3  </li></ul>
  15. 15. Examples <ul><li>AgNO 3 + Cu  Cu(NO 3 ) 2 + Ag </li></ul><ul><li>Mg + N 2  Mg 3 N 2 </li></ul><ul><li>P + O 2  P 4 O 10 </li></ul><ul><li>Na + H 2 O  H 2 + NaOH </li></ul><ul><li>CH 4 + O 2  CO 2 + H 2 O </li></ul>
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