Tuesday

1. Tuesday

2. Equations for Chemical Reactionsare like recipes Such as: 2 hydrogens + 2 oxygens yields 1 Hydrogen Peroxide, H2O2 Or: 1 cup greek yogurt + 1 cup self-rising flour yields 2flatbreads • Types of chemical reactions demo

3. Symbols used in Chemical Equations

4. Combination or Synthesis: A + B -> AB

5. Decomposition Reaction: AB -> A + B

6. Combustion: C compound + O₂ -> CO₂ + H₂O

7. Single Replacement: A + BX -> AX + B

8. AX + BY -> AY + BX

9. A + B → AB Two or more elements or compounds combine to make a more complex substance AB → A + B Compounds break down into simpler substances AB + C → AC + B Occurs when one element replaces another one in a compound AB + CD → AC + BD Occurs when different atoms in two different compounds trade places C+ O2 → CO2 +H2O

10. Common Chemical Reactions Use the code below to classify each reaction. S = Synthesis D = Decomposition SR = Single Replacement DR = Double Replacement C=Combustion ____ P + O2 → P4O10 ____ KOH + ZnBr2 → ZnOH + KBr ____ HgO → Hg + O2 ____ Al2O3 → Al + O2 ____ Cl2 + NaBr → NaCl + Br2 ____ H2 + N2 → NH3

11. Types of Chemical ReactionsCard Sort Find the reactions that look similar. Sort the reactions into 5 categories.

12. Closing 1/8/2019 • Identify the following reactions as a synthesis, decomposition, single replacement, double replacement, or a combustion reaction • ___ NaNO3 + ___ PbO ___ Pb(NO3)2 + ___ Na2O • ___ Ca + ___ H2O  ___Ca(OH)2 • ___Fe2O3 ___Fe + ___ O2 • ___FeS + ___O2 ___Fe2O3 + ___S2 • ___ C3H6O2 + ___ O2 ___ CO2 + ___ H2O New online homework assignment – due Fri. Jan 18