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3 chemical reactions
3 chemical reactions
3 chemical reactions
3 chemical reactions
3 chemical reactions
3 chemical reactions
3 chemical reactions
3 chemical reactions
3 chemical reactions
3 chemical reactions
3 chemical reactions
3 chemical reactions
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3 chemical reactions

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  • 1. Chemical Reactions
  • 2. <ul><li>Chemical Reaction- a well- defined example of a chemical change. One or more substances are changed into new substances. </li></ul>
  • 3. <ul><li>What makes up a chemical reaction? </li></ul><ul><li>Reactants - substances you start with </li></ul><ul><li>2. Products - substances you end with </li></ul><ul><li>Reactants -> Products </li></ul>
  • 4. <ul><li>Balanced chemical equation- same number of atoms of each element on both sides of the equation. </li></ul><ul><ul><li>Remember atoms are rearranged but never lost or destroyed. </li></ul></ul>
  • 5. <ul><li>Writing a balanced chemical equation </li></ul><ul><li>Reactant on left side and products on the right side. </li></ul><ul><li>Check for atom balance </li></ul><ul><li>Choose coefficients that balance the equation. </li></ul>
  • 6. <ul><li>Coefficients - numbers that represent the number of units of each substance taking part in a reaction. </li></ul>
  • 7. <ul><li>Ex: </li></ul><ul><li>Reactants Products </li></ul><ul><li>_LiF + _Br 2 -> _LiBr +_ F 2 </li></ul><ul><li>1 1 2 1 1 2 </li></ul>
  • 8. <ul><li>Reactants Products </li></ul><ul><li>2 LiF + _Br 2 -> _LiBr +_ F 2 </li></ul><ul><li>2 2 2 1 1 2 </li></ul>
  • 9. <ul><li>Reactants Products </li></ul><ul><li>2 LiF + _Br 2 -> 2 LiBr +_ F 2 </li></ul><ul><li>2 2 2 2 2 2 </li></ul>
  • 10. <ul><li>_Mg + _O 2 -> _MgO </li></ul><ul><li>_AgNO 3 + _NaCl -> _AgCl + _NaNO 3 </li></ul><ul><li>_MgCl 2 + _Na 2 CO 3 -> _MgCO 3 + _NaCl </li></ul>
  • 11. <ul><li>4. _NaBr + _Cl 2 ->_NaCl +_Br 2 </li></ul><ul><li>5. _Cu + _S -> _Cu 2 S </li></ul><ul><li>6. _Al(OH) 3 + _CO 2 -> _Al(HCO 3 ) 3 </li></ul>
  • 12. <ul><li>7. _ Na + _H2O -> _NaOH + _H2 </li></ul>

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