Jeopardy Chemical/Physical Changes Periodic Table Matter & Energy Reactions General Q $100 Q $200 Q $300 Q $400 Q $500 Q $100 Q $200 Q $300 Q $400 Q $500.

JeopardyChemical/PhysicalChanges

Periodic Table

Matter & Energy Reactions General

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Final Jeopardy

$100 Question from H1

Which of these proves thatphotosynthesis involves a chemicalchange?

A. Burning of woodB. Green color of plant leavesC. Survival of trees depends onwaterD. The fact that carbon dioxide formsother molecules

$100 Answer from H1

A. Burning of woodB. Green color of plant leavesC. Survival of trees depends onwaterD. The fact that carbon dioxide formsother molecules

$200 Question from H1When a student mixes oxygen andhydrogen gas in a test tube, nothingseems to happen. However, when thestudent introduces an electric spark, themixture "pops," and water forms on theinside of the test tube. What is the bestevidence for this chemical change?

A. Popping soundB. Use of electricityC. Formation of waterD. Mixture of two gases

$200 Answer from H1

A. Popping soundB. Use of electricityC. Formation of waterD. Mixture of two gases

$300 Question from H1

When a student lowered thetemperature of a glass of water below0°C, the water turned into ice. Later thestudent heated the ice and it turnedback into water. Why must this be aphysical change?

A. The water is still water.B. The ice required heat to melt.C. The amount of water is still thesame.D. The density of ice and water aredifferent.

$300 Answer from H1

A. The water is still water.B. The ice required heat to melt.C. The amount of water is still thesame.D. The density of ice and water aredifferent.

$400 Question from H1A student places a small piece ofsodium in a beaker of water. Thesodium begins to smoke, hiss, and jumpacross the surface of the water. In a fewseconds, the sodium disappears. Whatis the best evidence that a chemicalchange occurred?

A. Rapid movementB. Change of massC. Creation of heatD. Generation of sound

$400 Answer from H1

A. Rapid movementB. Change of massC. Creation of heatD. Generation of sound

$500 Question from H1

The table shown contrasts some properties observed of new and old nail material. Which of these statements best describes rust as compared with the original metal in the nails?A. An original substance that has changed phaseB. A new substance that formed from a chemical changeC. An original substance that has undergone a physical changeD. A new substance that did not form from the original substance

$500 Answer from H1

A. An original substance that has changed phaseB. A new substance that formed from a chemical changeC. An original substance that has undergone a physical changeD. A new substance that did not form from the original substance

$100 Question from H2

Which of these elements is usually inthe form of a gas?

A. LeadB. NeonC. CarbonD. Strontium

$100 Answer from H2A. LeadB. NeonC. CarbonD. Strontium

$200 Question from H2Which metal has properties that are themost similar to iron?

A. SodiumB. MercuryC. AluminumD. Manganese

$200 Answer from H2

A. SodiumB. MercuryC. AluminumD. Manganese

$300 Question from H2Helium and neon are grouped togetheron the Periodic Table because they —

A. are gases.B. are elements.C. have the same mass.D. have the same number of protons.

$300 Answer from H2

A. are gases.B. are elements.C. have the same mass.D. have the same number of protons.

$400 Question from H2

Which characteristic of an element bestexplains how it behaves chemically?

A. Atomic massB. Atomic numberC. Group classificationD. Period classification

$400 Answer from H2

A. Atomic massB. Atomic numberC. Group classificationD. Period classification

$500 Question from H2

Which element does not react naturallywith other elements?

A. LeadB. NeonC. OxygenD. Potassium

$500 Answer from H2

A. LeadB. NeonC. OxygenD. Potassium

$100 Question from H3

In the equation shown, what does thearrow represent?

A. Heat is released.B. Energy is produced.C. A chemical change occurs.D. The elements are separated.

$100 Answer from H3

A. Heat is released.B. Energy is produced.C. A chemical change occurs.D. The elements are separated.

$200 Question from H3The chemical formula of oxygen thatexists in the atmosphere is O2. Whatdoes the number "2" represent?

A. Oxygen is a gas at room temperature.B. Two oxygen atoms are bonded together.C. Oxygen is on row two of the periodic table.D. Oxygen is the second most common element.

$200 Answer from H3

A. Oxygen is a gas at room temperature.B. Two oxygen atoms are bonded together.C. Oxygen is on row two of the periodic table.D. Oxygen is the second most common element.

$300 Question from H3This chemical equation represents theburning of methane (CH4):CH4 + 2O2 →CO2 + 2H2O

What information does this chemicalequation provide?

A. Methane is usually a gas.B. Oxygen is required to burn methane.C. The products of the reaction are toxic.D. The burning of methane releases energy.

$300 Answer from H3

A. Methane is usually a gas.B. Oxygen is required to burn methane.C. The products of the reaction are toxic.D. The burning of methane releases energy.

$400 Question from H3In the atmosphere, ozone can form fromoxygen as shown in the chemicalreaction:

3O2→ 2O3

Based on the equation, what must betrue?

A. Ozone is poisonous.B. Burning gasoline creates ozone.C. Ozone has more mass than oxygen.D. The atmosphere has more ozonethan oxygen.

$400 Answer from H3

A. Ozone is poisonous.B. Burning gasoline creates ozone.C. Ozone has more mass than oxygen.D. The atmosphere has more ozonethan oxygen.

$500 Question from H3The chemical reaction of sodium metalwith water is:

2Na + 2H2O→ 2 NaOH + H2

What kind of gas is released in thisreaction?

A. SteamB. OxygenC. SodiumD. Hydrogen

$500 Answer from H3

A. SteamB. OxygenC. SodiumD. Hydrogen

$100 Question from H4Many cooks prefer using pans made ofcopper to pans made of steel. Onereason is that copper pans get hottermuch more rapidly than steel pans. Thiscan be explained by differencesbetween the copper and steel's —

A. density.B. specific heat.C. atomic mass.D. atomic number.

$100 Answer from H4

A. density.B. specific heat.C. atomic mass.D. atomic number.

$200 Question from H4Native Americans sometimes madesoup by heating up stones in a fire andthen dropping them into leather bagsfilled with water. Soon the water wouldbegin boiling. The best stones for thispurpose had a low —

A. mass.B. density.C. permeability.D. specific heat.

$200 Answer from H4

A. mass.B. density.C. permeability.D. specific heat.

$300 Question from H4

A student observes a white light and the release of heat when a piece of magnesium ribbon reacts with oxygen gas. What type of reaction is this?

A. ExothermicB. PrecipitationC. EndothermicD. Neutralization

$300 Answer from H4

A. ExothermicB. PrecipitationC. EndothermicD. Neutralization

$400 Question from H4In order to determine if a reaction isendothermic, a student combines twochemicals in a test tube suspended in abeaker of water. Which of these is thebest indicator that an endothermicreaction occurs?

A. Chemicals change color.B. A strong odor is produced.C. Bubbles appear in the test tube.D. Water in the beaker becomescooler to the touch.

$400 Answer from H4

A. Chemicals change color.B. A strong odor is produced.C. Bubbles appear in the test tube.D. Water in the beaker becomescooler to the touch.

$500 Question from H4

Heat packs are often used for soremuscles. What type of reaction do heat packs utilize?

A. SynthesisB. ExothermicC. CombustionD. Endothermic

$500 Answer from H4

A. SynthesisB. ExothermicC. CombustionD. Endothermic

$100 Question from H5

Your Text Here

$100 Answer from H5

53 Milliliters

$200 Question from H5

Your Text Here

A student completes a lab that requires her to calculate the density of a rock. According to the readings above, what is the density of the rock?

A. 0.5 g/ml B. 2 g/ml C. 50 g/ml D. 5000 g/ml

$200 Answer from H5

A. 0.5 g/ml B. 2 g/ml C. 50 g/ml D. 5000 g/ml

$300 Question from H5

Meteorologists have measured the rainfall for the month of August for the past seven years. The results are shown in the table and graph.

2. Which of the following is the best prediction for rainfall in 2009?

A. between 0 and 2 cmB. between 3 and 5 cmC. between 7 and 9 cmD. between 10 and 12 cm

August Rainfall Totals

Year Amount of Rainfall

2002 7.8 cm

2003 4.3 cm

2004 3.9 cm

2005 4.0 cm

2006 8.4 cm

2007 3.75 cm

2008 4.25 cm

August Rainfall Totals

0

1

2

3

4

5

6

7

8

9

1 2 3 4 5 6 7

Year

Am

ou

nt

of

rain

fall

(cm

)

$300 Answer from H5

A. between 0 and 2 cmB. between 3 and 5 cmC. between 7 and 9 cmD. between 10 and 12 cm

$400 Question from H59. The element argon (Ar) is an odorless, colorless gas at room

temperature. Which of these elements have similar physical properties?

A. CarbonB. KryptonC. ChlorineD. Potassium

$400 Answer from H5

A. CarbonB. KryptonC. ChlorineD. Potassium

$500 Question from H5Decide if each statement is describing an endothermic

or an exothermic reaction. Record your answers on your sheet.

• Temperature rises• Heat is absorbed• Heat is given off• Temperature falls

$500 Answer from H5

•Temperature rises

•Heat is absorbed

•Heat is given off

•Temperature falls

exothermic

endothermic

exothermic

endothermic

Final JeopardyTwo differences between a compound and an element.

Final Jeopardy Answer

An element is a single atom. A compound is composed of more than one atom of different elementsExample:Element: C (Carbon)Compound: CO *Carbon Monoxide* (Carbon and Oxygen)