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Understanding Chemical Reactions: Key Concepts and Examples

Explore the fascinating world of chemical reactions with this comprehensive overview. Learn the shorthand used in chemistry to represent elements and compounds, understand physical and chemical properties, and how substances change identity. Delve into concepts such as heat exchange during reactions, the formation of precipitates, and practical examples like rusting and evaporation. Get tips on interpreting chemical equations, counting atoms, and understanding reactants versus products. Perfect for students and anyone interested in the science of chemistry.

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Understanding Chemical Reactions: Key Concepts and Examples

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Presentation Transcript

  1. Chemical Reaction Jeopardy

  2. This is a shorthand way to write a compound or element’s name using symbols and subscripts

  3. These properties can be easily observed or measured without changing an object’s identity

  4. This occurs when a substance changes it’s identity

  5. This type of heat exchange has energy exiting the reaction

  6. The new solid that falls out of a reaction

  7. Freezing fruit juice into a popsicle

  8. Combining oxygen and hydrogen to get hydrogen peroxide

  9. Leaving my bicycle out in the rain and it rusts

  10. Water evaporating from a lake

  11. The Statue of Liberty turning blue due to Cu bonding with elements in the air

  12. Your equal sign in the equation

  13. This tells you the number of atoms of each individual element

  14. This tells you the number of molecules

  15. The starting elements or compounds in a reaction

  16. The ending elements or compounds in a reaction

  17. Who has the a subscript of one in this formula: H2O

  18. When you have a coeffienct and a subscript in the same formula (like 2H2O) how do you find the number of atoms of hydrogen?

  19. How many atoms of each element do you have in the following equation: Cu(OH)2

  20. How many of each element do you have in the following equation: 9Mg(PO4)2

  21. How many total atoms on the product side of the following equation: 2HBr + Mg(OH)2 MgBr2 + 2 H2O

  22. AlBr3 + 3 K  3KBr + Al

  23. 2Mn + 6 HI  3H2 + 2 MnI3

  24. P4 + 3O2 P2O3

  25. C2H6 + O2 CO2 + H2O

  26. 2CoBr3 + CaSO4 3CaBr2 + Co2(SO4)3

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