April 15, 2013AGENDA: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 15Objective: 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 15Objective: 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 15Objective: 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 15Objective: 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 15Objective: 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 15Objective: 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, 2013AGENDA: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 15Objective: 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

exothermic and

endothermic

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

ReflectionAnswer 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?