Embed Size (px)
Citation preview
Tuesday, Oct. 15Tuesday, Oct. 15thth: “A” Day: “A” DayWednesday, Oct. 16Wednesday, Oct. 16thth: “B” Day (early out): “B” Day (early out)
AgendaAgendaCh. 2 review questions?Ch. 2 review questions?
Jeopardy ReviewJeopardy Review
Homework: Vocab Puzzle/Concept ReviewHomework: Vocab Puzzle/Concept Review
Ch 2 test Next Time!Ch 2 test Next Time!
Concept review packets will be dueConcept review packets will be due
Chapter 2 ReviewChapter 2 Review
Problems on Chapter Review?Problems on Chapter Review?
Ch 2 Short Answer Test QuestionsCh 2 Short Answer Test Questions
The “Critical Thinking” questions in the The “Critical Thinking” questions in the Jeopardy review gameJeopardy review game
areare the short answer questions the short answer questions that you will see on the that you will see on the
Chapter 2 test!Chapter 2 test!
Matter & Matter & EnergyEnergyCh.#2Ch.#2
THE RULES:
• You will be in 5 teams
•The winning team will receive mole money that can be used for
1 point on a test.
• The host’s decisions are final
And now…here is the host of Jeopardy…
Mrs. Elfline
Let’s Get Ready to play…
Today’s Categories are:
VocabularyVocabulary
Sig FigsSig Figs&&
Scientific NotationScientific Notation
Critical ThinkingCritical Thinking
Calculations!Calculations!
RefrigeratorRefrigeratorMagnetsMagnets
$100
$200
$300
$400
$500
VocabularyVocabulary
$100
$200
$300
$400
$500
Sig Figs & Sci.Sig Figs & Sci.NotationNotation
$100
$200
$300
$400
$500
CriticalCriticalThinkingThinking
$100
$200
$300
$400
$500
Calculations!Calculations!
$100
$200
$300
$400
$500
RefrigeratorRefrigeratorMagnetsMagnets
DDDD
FJFJ
The energy of motionThe energy of motion
Answer…Answer…
Kinetic EnergyKinetic Energy
100100
The kinetic energy of the particles The kinetic energy of the particles in a sample of matterin a sample of matter
Answer…Answer…
Temperature Temperature
200200
Any factor that could affect the Any factor that could affect the results of an experimentresults of an experiment
Answer…Answer…
VariableVariable
300300
A statement or mathematical A statement or mathematical expression that describes a expression that describes a behavior of the natural worldbehavior of the natural world
Answer…Answer…
LawLaw
400400
A chemical process that absorbs A chemical process that absorbs energyenergy
Answer…Answer…
Endothermic ProcessEndothermic Process
500500
Answer…Answer…
What is the measurement 0.0455What is the measurement 0.0455
rounded to 2 significant figures?rounded to 2 significant figures?
100100
0.0460.046
Answer…Answer…
How many sig figs are inHow many sig figs are in
0.0020 mm?0.0020 mm?
22
200200
What is 0.0840 written in scientific What is 0.0840 written in scientific notation?notation?
Answer…Answer…
8.40 x 108.40 x 10-2-2
300300
(6.02 x 10(6.02 x 1077) (9.1 x 10) (9.1 x 1055))
Remember sig figs!Remember sig figs!
Answer…Answer…
5.5 x 105.5 x 101313
400400
How many significant figures does How many significant figures does 0.00402 have?0.00402 have?
Answer…Answer…
33
500500
ExplainExplain why is an ice cube melting why is an ice cube melting a physical change.a physical change.
Answer…Answer…
The water molecules are still water The water molecules are still water molecules, they haven’t chemically molecules, they haven’t chemically
changed. The water has just changed. The water has just changed states from a solid (ice) changed states from a solid (ice)
to a liquid (water).to a liquid (water).
100100
ExplainExplain the difference between an the difference between an endothermic process and an exothermic endothermic process and an exothermic
process.process.
Answer…Answer…
In an endothermic process, In an endothermic process, energy is absorbed.energy is absorbed.
In an exothermic process, energy In an exothermic process, energy is given off or released.is given off or released.
200200
ExplainExplain why pictures of atoms and why pictures of atoms and molecules are models.molecules are models.
Answer…Answer…
Because atoms and molecules are Because atoms and molecules are way too small to see, scientists way too small to see, scientists must use models to study their must use models to study their
structure and behavior.structure and behavior.
300300
Why should a scientist record all Why should a scientist record all observations, even those that observations, even those that
appear insignificant or don’t agree appear insignificant or don’t agree with the hypothesis?with the hypothesis?
Answer…Answer…
ALL scientific observations provide ALL scientific observations provide information, even if the information information, even if the information
does not agree with the does not agree with the hypothesis. hypothesis.
Many scientific discoveries have Many scientific discoveries have been made because experiments been made because experiments
did not turn out as expected.did not turn out as expected.
400400
The mass of a 3.45g piece of The mass of a 3.45g piece of aluminum was measured several aluminum was measured several
times. The measured masses times. The measured masses were 2.67g, 2.59g, and 2.64g. were 2.67g, 2.59g, and 2.64g. Use these results Use these results to to explainexplain the the
difference between accuracy and difference between accuracy and precision.precision.
Answer…Answer…
The measured masses were NOT The measured masses were NOT close to the actual mass of the close to the actual mass of the
aluminum, 3.45g, so the aluminum, 3.45g, so the measurements were NOT measurements were NOT
accurate.accurate.The measured masses WERE The measured masses WERE
closely grouped together, so they closely grouped together, so they WERE precise.WERE precise.
500500
Convert 323 K to ˚CConvert 323 K to ˚C
Answer…Answer…
50˚C50˚C
100100
Convert 20˚C to KConvert 20˚C to K
Answer…Answer…
293 K293 K
200200
An object has a mass of 57.6 g. An object has a mass of 57.6 g. Find the object’s density if the Find the object’s density if the
volume of the object is 40.25 cmvolume of the object is 40.25 cm33. .
Remember sig figs and units! Remember sig figs and units!
Answer…Answer…
1.43 g/cm1.43 g/cm33
300300
The temperature of a piece of The temperature of a piece of copper with a mass of 95.4 g copper with a mass of 95.4 g
increases from 298.0 K to 321.1 K increases from 298.0 K to 321.1 K when the metal absorbs 849 J of when the metal absorbs 849 J of
energy as heat. What is the energy as heat. What is the specific heat of the copper?specific heat of the copper?
Remember sig figs and units!Remember sig figs and units!
Answer…Answer…
.385 J/g•K.385 J/g•K
400400
How much energy is needed to How much energy is needed to raise the temperature of a 75 g raise the temperature of a 75 g
sample of aluminum from 22.4 K sample of aluminum from 22.4 K to 94.6 K if the specific heat of to 94.6 K if the specific heat of aluminum, caluminum, cpp, is 0.897 J/g•K., is 0.897 J/g•K.
Remember sig figs and units!Remember sig figs and units!
Answer…Answer…
4,900 J4,900 J
500500
Answer…Answer…
Charlie BrownCharlie Brown
100100
Answer…Answer…
DorothyDorothy(from the Wizard of Oz)(from the Wizard of Oz)
200200
Answer…Answer…
Michael JacksonMichael Jackson
300300
Answer…Answer…
William ShakespeareWilliam Shakespeare
400400
Answer…Answer…
Flavor FlavFlavor Flav
500500
Daily DoubleDaily DoubleHow much do you want
to wager?
Daily DoubleDaily Double
FINALFINALJEOPARDYJEOPARDY
CATEGORY:CATEGORY:
Calculations Calculations and Sig Figsand Sig Figs
How much do you want to wager?
Proceed…Proceed…
The dimensions of a rectangle are 1.27 cm, 1.3 cm, and 2.5
cm. What is the volume?
Remember sig figs and units!
Proceed…Proceed…
4.1 cm4.1 cm33
Proceed…Proceed…
Thanks for Thanks for PLAYING!PLAYING!
Credits
Created by:
Chad Kafka, Business Teacher Huntley High School
Jeopardy sound effects used solely for the purpose of fun, entertainment, and education and NOT for profit.
