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April 15, 2013
AGENDA:1 – Bell Ringer & Part.
Log2 – CN: Energy in
Chemical Reactions3 – Reflection4 – “We Do” Practice5 - “You Do” Practice
Today’s Goal:Students will be able to
contrast exothermic and endothermic reactions.
Homework1. Exothermic &
Endothermic Reactions
2. Work from WEEK 30 is due Friday
3. EC: Report Card Pick-Up is Thursday!
Monday, April 15
Objective: Students will be able to contrast
exothermic and endothermic reactions.
Bell Ringer:What do you plan on doing in the
second half of this semester to ensure that you succeed?
5 minutes!
4 MINUTES REMAINING…
Monday, April 15
Objective: Students will be able to contrast
exothermic and endothermic reactions.
Bell Ringer:What do you plan on doing in the
second half of this semester to ensure that you succeed?
4 minutes!
3 MINUTES REMAINING…
Monday, April 15
Objective: Students will be able to contrast
exothermic and endothermic reactions.
Bell Ringer:What do you plan on doing in the
second half of this semester to ensure that you succeed?
3 minutes!
2 MINUTES REMAINING…
Monday, April 15
Objective: Students will be able to contrast
exothermic and endothermic reactions.
Bell Ringer:What do you plan on doing in the
second half of this semester to ensure that you succeed?
2 minutes!
1 MINUTE REMAINING…
Monday, April 15
Objective: Students will be able to contrast
exothermic and endothermic reactions.
Bell Ringer:What do you plan on doing in the
second half of this semester to ensure that you succeed?
1 minute!!!
30 seconds Remaining…
Monday, April 15
Objective: Students will be able to contrast
exothermic and endothermic reactions.
Bell Ringer:What do you plan on doing in the
second half of this semester to ensure that you succeed?
30 seconds!!!
10 Seconds Remaining…
BELL-RINGER TIME IS
UP!
April 15, 2013
AGENDA:1 – Bell Ringer & Part.
Log2 – CN: Energy in
Chemical Reactions3 – Reflection4 – “We Do” Practice5 - “You Do” Practice
Today’s Goal:Students will be able to
contrast exothermic and endothermic reactions.
Homework1. Exothermic &
Endothermic Reactions
2. Work from WEEK 30 is due Friday
3. EC: Report Card Pick-Up is Thursday!
Monday, April 15
Objective: Students will be able to contrast
exothermic and endothermic reactions.
Bell Ringer:What do you plan on doing in the
second half of this semester to ensure that you succeed?
REVIEW
Cornell Notes
Topic: Energy in Chemical Reactions (Exothermic vs. Endothermic)
Date: 4/15/2013
Energy is the ability to do work or produce heat. Kinetic energy = energy of movement Potential energy = energy of position Chemical energy = energy of chemical
reactions
Describe
energy.
Cornell Notes (continued)
Chemical potential energy is the energy stored in the reactants of a chemical reaction.
Measuring energy:Universe = Surroundings +
System
SurroundingsSurroundings
SystemHeat Heat
Endothermic Exothermic
Explain chemica
l potentia
l energy.
Cornell Notes (continued)
Compare and
contrast exothermi
c and endother
mic reactions.
Exothermic Endothermic
• A chemical reaction where energy is released (exo = exit)• Reactants Products + HEAT• Examples:• burning• exploding• freezing (liqsol)• condensing(gasliq)• sound• temperature of
surroundings increases
• A chemical reaction where energy is absorbed (endo=indoor)• Reactants + HEAT Products• Examples:• growing• melting (solliq)• boiling (liqgas)• cooking• temperature of
surroundings decreases
Reflection
Answer the following reflection question: Describe one way you would
be able to tell if a chemical reaction was endothermic or exothermic. What does this mean?
