jan uary 10, 2014
DESCRIPTION
Jan uary 10, 2014. AGENDA: 1 – Bell Ringer 2 – Review HW 3 – Cornell Notes: Balancing Chemical Reactions 4 – Practice 5 – BrainPop : Chemical Equations. Today’s Goal: Students will be able to balance chemical reactions. Homework Balancing Chemical Reactions Practice Problems - PowerPoint PPT PresentationTRANSCRIPT
January 10, 2014
AGENDA:1 – Bell Ringer 2 – Review HW3 – Cornell Notes:
Balancing Chemical Reactions
4 – Practice5 – BrainPop: Chemical
Equations
Today’s Goal:Students will be able to
balance chemical reactions.
Homework1. Balancing Chemical
Reactions Practice Problems
2. Next week is the last week before exams! So make sure to finish any missing work this weekend to turn in by next Friday at the LATEST!
Friday, January 10
Objective: Students will be able to balance chemical
reactions.
Bell Ringer:Classify the following reactions: (as
synthesis (S), decomposition (D), combustion (C), single-replacement (SR) or double-replacement (DR))
1. FeCl3 + NaOH Fe(OH)3 + NaCl
2. N2 + H2 NH3
3. Ag2O Ag + O2
4 MINUTES REMAINING…
Friday, January 10
Objective: Students will be able to balance chemical
reactions.
Bell Ringer:Classify the following reactions: (as
synthesis (S), decomposition (D), combustion (C), single-replacement (SR) or double-replacement (DR))
1. FeCl3 + NaOH Fe(OH)3 + NaCl
2. N2 + H2 NH3
3. Ag2O Ag + O2
3 MINUTES REMAINING…
Friday, January 10
Objective: Students will be able to balance chemical
reactions.
Bell Ringer:Classify the following reactions: (as
synthesis (S), decomposition (D), combustion (C), single-replacement (SR) or double-replacement (DR))
1. FeCl3 + NaOH Fe(OH)3 + NaCl
2. N2 + H2 NH3
3. Ag2O Ag + O2
2 MINUTES REMAINING…
Friday, January 10
Objective: Students will be able to balance chemical
reactions.
Bell Ringer:Classify the following reactions: (as
synthesis (S), decomposition (D), combustion (C), single-replacement (SR) or double-replacement (DR))
1. FeCl3 + NaOH Fe(OH)3 + NaCl
2. N2 + H2 NH3
3. Ag2O Ag + O2
1 MINUTE REMAINING…
Friday, January 10
Objective: Students will be able to balance chemical
reactions.
Bell Ringer:Classify the following reactions: (as
synthesis (S), decomposition (D), combustion (C), single-replacement (SR) or double-replacement (DR))
1. FeCl3 + NaOH Fe(OH)3 + NaCl
2. N2 + H2 NH3
3. Ag2O Ag + O2
30 seconds Remaining…
Friday, January 10
Objective: Students will be able to balance chemical
reactions.
Bell Ringer:Classify the following reactions: (as
synthesis (S), decomposition (D), combustion (C), single-replacement (SR) or double-replacement (DR))
1. FeCl3 + NaOH Fe(OH)3 + NaCl
2. N2 + H2 NH3
3. Ag2O Ag + O2
10 Seconds Remaining…
BELL-RINGER TIME IS
UP!
January 10, 2014
AGENDA:1 – Bell Ringer 2 – Review HW3 – Cornell Notes:
Balancing Chemical Reactions
4 – Practice5 – BrainPop: Chemical
Equations
Today’s Goal:Students will be able to
balance chemical reactions.
Homework1. Balancing Chemical
Reactions Practice Problems
2. Next week is the last week before exams! So make sure to finish any missing work this weekend to turn in by next Friday at the LATEST!
Cornell Notes
Topic: Balancing Chemical Reactions
Date: 1/10/2014
MgO Mg + O2
Reactants Products
Reflection
Question:
Why do we
balance chemical equation
s?
Things reactin
g
Things produc
ed
Cornell Notes (continued)
Law of Conservation of Mass/Matter =
=
=
Mass of reactant
s
Mass of product
s
# of each element of
the reactants
# of each element of
the products
Cornell Notes (continued)
Reactants___ MgO
Mg = 1 O = 1
Products___ Mg + ___ O2
Mg = 1 O = 2
Example:
x 2 = 2x 2 = 2
x 2 = 2x 1 = 2
2 2 1
Balanced Chem. Eqn. =2 MgO 2 Mg + 1 O2
= Mg= O +
Coefficients
Cornell Notes (continued)
“How to Balance” Steps:1. Draw a line between reactants &
products.2. Count up all atoms of reactants &
products.3. Determine multiplier (coefficient)
LCD (Lowest Common Denominator).4. Place multiplier (coefficient) in front
of compound.5. Repeat as necessary until all
elements are balanced.
Practice
Counting Atoms:
O2 O = 2
Fe2O3 Fe = 2O = 3
2 NaOH Na = 2O = 2H = 2
2 Ca(NO3)2 Ca = 2N = 4
O = 12
2 NaOH Na = 2OH = 2
…or… …or…2 Ca(NO3)2
Ca = 2NO3 = 4
Practice (continued)
Reactants___ Ag + ___CuCl2
Ag = 1 Cu = 1 Cl = 2
Products___ Cu + ___ AgCl
Ag = 1Cu = 1
Cl = 1
Example:
x 2 = 2x 1 = 1
x 2 = 2x 1 = 1
2 1 21
x 1 = 2
x 2 = 2
Reflection
In the summary section of your Cornell Notes, complete both of the following sentence strands in 5 minutes:
It is important to balance chemical equations because…
I can balance chemical reactions by…
BrainPop: Chemical Equations
http://www.brainpop.com/science/matterandchemistry/chemicalequations/