Today, we missed some class time because of a presentation in a gym for the whole school. We did take notes on chemical equations, however.
CHEMICAL EQUATIONS
- Shows the chemicals used up (reactants) and produced (products) during a chemical reaction
- The numbers in front of the symbols are called coefficients and they refer to the number of moles
BALANCED CHEMICAL EQUATIONS
- There are the same number of each type of atom on each side of the equation
- Mass, atoms and charge are conserved
Ex: Sn + O2 -----> SnO
= 2 Sn + O2 -----> 2SnO
Ex: Na + H20 -----> NaOH + H2
= 2 Na + 2 H20 -----> 2NaOH + H2
Ex: NH3 + O2 -----> NO + H20
= 4 NH3 + 5 O2 -----> 4 NO + 6 H2O
For some extra help, here's a video on balancing chemical equations:
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment