1. JUST DO IT 3.20.13 Daily Riddle In Question
In Question
What are the following compounds?
CO2
H2O
NaCl

2. Today in your notebooks
PT groups/famillies, PT brainpop
PT notes
Atomic trends
Atomic trends notes
Compounds and molecules, BP
Bonding notes
Atomic arrangements
Arrangements notes
Valence electrons ws
Valence electrons notes
Phys/chem change ws
Physical and chemical change notes
Balancing Chem. reactions
Chem. Reactions notes

3. HW Answers Arrows Energy is lost Food web- network of food chains
Trophic level- position it holds in a food chain
Autotroph- makes its own food
Primary, herbivores
Carnivores, omnivores,
Carnivores, omnivores
12. vultures, worms, crabs

4. Chemical Reactions(Right)
What is a ch. rxn?
What are the parts of a rxn?
What do the numbers mean?
4) Why do eqn.s have to be balanced?
CH. RXN: The process that turns one set of reactants into something else
REACTANTS: What’s mixed together, on the left of the yield sign
PRODUCTS: what forms, on the right of the yield sign. Products often have different properties than the reactants
3) SUBSCRIPT: how many atoms of that element
COEFFICIENT: how many molecules of that compound
4) Matter can not be created or destroyed, only transformed. Rxns need to be equal because everything on the reactant side turns into something else- nothing disappears!

5. Common Ions and compounds
How do I make???
Type of bond
reactants
products
structure
1. Methane CH4
2. Water H2O

6. DEMO
HC2H3O2(aq) +NaHCO3(s) --> NaC2H3O2(aq) + CO2(g) + H2O(l) 

7. Balancing Chemical Equations
Balance the equations below:
1) ____ N2 + ____ H2  ____ NH3
2) ____ KClO3  ____ KCl + ____ O2
All atoms of an element on the reactant side need to balance with the atoms of that element on the product side
1N + 3H NH3
2kclo kcl + 3o2

8. Work with a partner
3) ____ NaCl + ____ F2  ____ NaF + ____ Cl2 4) ____ H2 + ____ O2  ____ H2O 5) ____ Pb(OH)2 + ____ HCl  ____ H2O + ____ PbCl2 6) ____ AlBr3 + ____ K2SO4  ____ KBr + ____ Al2(SO4)3 7) ____ CH4 + ____ O2  ____ CO2 + ____ H2O 8) ____ C3H8 + ____ O2  ____ CO2 + ____ H2O