Download 010411 chem b notes and lesson - inksterscience

Tuesday, January 4, 2011
 DO NOW: Name and give examples of 4 types of energy.
 HOMEWORK: Complete worksheets (2pgs) due Thurs.
 AIMS: StandardC2: Forms of Energy
 LESSON STEPS:
1.
2.
3.
4.
5.
Complete and record Do Now and Homework in notebook.
Review Lesson Steps.
Discuss Do Now activity.
Notes and Discussion: 2 page worksheet
Review: Conservation of Mass packet and quiz: Turn in your
packet if you haven’t already! (was due in December)
StandardC2: Forms of Energy
 Students recognize the many forms of energy and understand that
energy is central to predicting and explaining how and why chemical
reactions occur.The chemical topics of bonding, gas behavior, kinetics,
enthalpy, entropy, free energy, and nuclear stability are addressed in
this standard.
 Chemistry students relate temperature to the average kinetic energy of
the molecules and use the kinetic molecular theory to describe and
explain the behavior of gases and the rates of chemical reactions.They
understand nuclear stability in terms of reaching a state of minimum
potential energy.
Energy Worksheets (2pgs, f/b)
(two pages, fronts and backs printed)
 “page 2 of 9”: front page (label with name, date, hour)
 “page 2” (Answer Key): NOTES! Read this page first.
 “page 3 of 9”: 5 questions
 “page 7 of 9”: 13 questions
 ALL FOUR PAGES ARE RELEVANT TO THE TOPIC OF
FORMS OF ENERGY.
 WE HAVE NOT COVERED ALL, BUT ALL ARE EASY TO
FIND.
 ALL ARE VALUABLE FOR TEST PREPARATION ALSO.
examples:
 heat: stove, sun, burner, heater, fire, lamp, tanning bed
 light: sun, lamp, fluorescent tube, flame, sun reflected off a full





moon
sound: IHS students talking, hitting the table, radio, phone,
announcer at a football game,
electrical: batteries, outlets, phone charger, phone, iPod, hair
dryer,
energy of motion: running, jumping, throwing, pushing, pulling,
falling
chemical energy: photosynthesis, burning fuel, digesting food
nuclear energy: fusion in the sun, fission in a nuclear power
generator
FIRST PAGE:
2 EXAMPLES OF EACH ENERGY FORM
a)
b)
c)
d)
e)
f)
g)
HEAT
LIGHT
SOUND
ELECTRICAL
ENERGY OF MOTION
CHEMICAL ENERGY
NUCLEAR ENERGY
For help with the
examples, please see the
ex
second page of the
worksheet packet and
listen during classroom
discussion 
Temperature changes from 100 to 120
 let’s vote
 energy increased: 1
 energy decreased: 1
 energy stayed same: (everyone else?): 31
Temperature changes from 80 to 60
 let’s vote
 energy increased: 1
 energy decreased:2
 energy stayed same: 30 (everyone else?)
Electricity flows through a wire.
 How is the flow of electricity related to the temperature of
the wire?
 both increase together (direct
relationship)
 when one increases, the other decreases (inverse
relationship)
 no relationship
How does temperature relate to
energy?
 brothers
 sisters
 parents?
 direct relationship (increase or decrease together)
 inverse relationship (one increases, the other decreases)
3 ways heat can be produced?
 sleep ?
 boil water in a pan on the stovetop?
 meditation?
 explosions in the sun?
 outer space ?
 zap copper wire in an electrical outlet?
 frozen slushie at 7-11 ?
Plants and energy use...
 Plants use energy to survive. They use the sun’s energy to make
the food they need to grow and develop. Which energy sequence
best describes the transformation that takes place in plants?
 sun: heat and light
 plant: photosynthesis (chemical)
 growth: motion?
 heat-light-chemical?

heat-nuclear-chemical?
 solar- heat- chemical?
multiple choice # 4-12
 mechanical
 electrical
 nuclear
 heat
 light
 chemical
 sound
 energy
 solar
 cabedifgh
#13: fossil fuels
 Fossil fuels contain energy that originally came from the sun.
Explain how we can state that electricity from a coalburning generator plant received its energy from the sun.
 diagram:
sun (nuclear, light, electromagnetic waves)  plants
(chemical) decay (chem)  burning (chem)  motion
(turning generator blades with moving steam)  electricity
(motion and magnets near wire move current in the wire)
But... I missed those answers!
 these notes will be online at
 www.inksterscience.wikispaces.com
 or
 ask a friend who was paying attention 
 notes on page 4, # 2 and #3 tomorrow.