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Types of equations. Write a balanced formula for:. When solid aluminum reacts with an aqueous solution of potassium hydroxide, it forms aluminum hydroxide in solution and an potassium solid. Al (s) +3KOH  Al(OH) 3 + 3K. Charades. I will need 4 volunteers!. Endothermic vs Exothermic.

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write a balanced formula for
Write a balanced formula for:
  • When solid aluminum reacts with an aqueous solution of potassium hydroxide, it forms aluminum hydroxide in solution and an potassium solid.
charades
Charades

I will need 4 volunteers!

endothermic vs exothermic
Endothermic vs Exothermic
  • Endothermic rnx- take in heat energy (cooling)
        • Energy as a reactant
  • Exothermic rnx- these give off energy (hot rnx)
        • Energy as a product
  • Real life examples? ?
slide6
Decomposition-

2H2O2 (aq) 2H2O (l) + O2 (g)

To make this rnx go faster you would add MnO2 but it would not be a reactant.

This is called a Catalyst  helps the reaction go faster.

slide7
Single replacement

2AgNO3 (aq) + Cu (s) 2Ag (s) + Cu(NO3)2 (aq)

This rnx shows Ag switch with Cu ONLY.

  • Double replacement

AgNO3 (aq) + KI (aq)  AgI (s) + KNO3 (aq)

This rnx shows the Ag and the K switch.

slide8
Synthesis
  • 2Mg + O2  2MgO + light (energy)
extra credit 2 pt balance
Extra Credit 2 ptbalance:

SF4 + I2O5 IF5 + SO2

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