Tuesday, Oct. 15 th : “A” Day Wednesday, Oct. 16 th : “B” Day (early out) Agenda Ch. 2...

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

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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

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Any factor that could affect the Any factor that could affect the results of an experimentresults of an experiment

Answer…Answer…

VariableVariable

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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

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A chemical process that absorbs A chemical process that absorbs energyenergy

Answer…Answer…

Endothermic ProcessEndothermic Process

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Answer…Answer…

What is the measurement 0.0455What is the measurement 0.0455

rounded to 2 significant figures?rounded to 2 significant figures?

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0.0460.046

Answer…Answer…

How many sig figs are inHow many sig figs are in

0.0020 mm?0.0020 mm?

22

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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

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(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

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How many significant figures does How many significant figures does 0.00402 have?0.00402 have?

Answer…Answer…

33

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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).

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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.

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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.

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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

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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

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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

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Answer…Answer…

DorothyDorothy(from the Wizard of Oz)(from the Wizard of Oz)

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Answer…Answer…

Michael JacksonMichael Jackson

300300

Answer…Answer…

William ShakespeareWilliam Shakespeare

400400

Answer…Answer…

Flavor FlavFlavor Flav

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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

chad@kafkaproductions.com

Jeopardy sound effects used solely for the purpose of fun, entertainment, and education and NOT for profit.