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Today’s exciting Today’s exciting topic….topic….

Lab 101 Magical Mixures

Matter and Energy

Properties of Matter

Anything Goes

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PowerPoint JeopardyFinal Jeopardy!

I am boiling pasta, one pot has salt and the other doesn’t. What is the

independent variable?

oA. Temperature of wateroB. SaltoC. Pot sizeoD. Amount of heat given to burner

B. Salt!!

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When graphing data, the independent variable and dependent variable will each always be placed on

which axis:

A.Independent on X and Dependent on Y.

B.Independent on Y and Dependent on X.

A. Independent on X and Dependent on Y!

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If the water temperature is too high, then the bacteria will die. This is an example of…

A.HypothesisB.ConclusionC.ControlD.Dependent Variable

A. Hypothesis!!

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a) In an experiment, the _________ variable is deliberately changed during the experiment and is what we are testing.

b) The ____________ variable is observed during the experiment and is the data we measure throughout the experiment.

a)Independent!!

b)Dependent!!

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During an experiment, a researcher takes five same-size beakers containing 50 mL, 100 mL, 150 mL, 200 mL and 250 mL water. She cools all of the beakers in the same ice water bath and records the time it took the water in each beaker to reach the freezing point of water

What is the independent variable?What is the dependent variable?What is one constant?

Independent: volume of beaker!

Dependent: time to reach freezing point!

Constant: ***

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A heterogeneous mixture is best described as?

A. A blend of substances that cannot be physically separatedB. A blend of substances that does not have a uniform compositionC.A blend of substances that has a uniform compositionD.Anything mixed with water

B. A blend of substances that does not have a uniform composition!

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A homogenous mixture is best described as?

A. A blend of substances that cannot be physically separatedB. A blend of substances that displays the Tyndall effectC.A blend of substances that has a uniform compositionD.Anything mixed with water

C. A blend of substances that has a uniform composition!

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Which of the following is pure substance?

A.Water from a wellB.Gold bars in Fort KnoxC.Air at the top of Mt. EverestD.Sand in Fiji

B. Gold bars in Fort Knox!

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A method that uses the difference in boiling points to separate a mixture into its pure substance components is:

A.DistillationB.FiltrationC.ChromatographyD.Boilitgoodlation

A Distillation!!

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Heterogeneous Mixtures can be further classified as

A.Colloids and Solutions

B.Solutions and Suspensions

C.Colloids and Suspensions

D.Colloids and Solutions

C. Colloids and Suspensions!!

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Matter is classified as anything having:

A.Mass and EnergyB.Volume and DensityC.Length and TemperatureD.Mass and Volume

D. Mass and Volume!!

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A substance that cannot be physically or chemically broken down any further is a/an:

A.moleculeB.elementC.compoundD.cell

B. element!!!

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Which of the above can be classified as molecules but not compounds?

a.H2O and O2b.O2 and H2c.H2 and H2Od.O and O2

B. O2 and H2!!

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A process that releases energy into its surroundings is described as __________, while a process that absorbs energy from its surroundings is described as ___________.

Exothermic and Endothermic!!!!

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Rank the phases of matter in terms of kinetic energy from lowest average kinetic energy to greatest average kinetic energy

A. Gas<Liquid<Solid<PlasmaB. Plasma<Gas<Liquid<SolidC. Solid<Liquid<Gas<PlasmaD. All phases have equal kinetic energy

C.Solid<Liquid<Gas<Plasma!!!

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Which of the following displays a chemical property?

A.Iron will form rust in the presence of Oxygen and WaterB.Water boils at 100 degrees CC.Iron can be made to be magneticD.Glucose will dissolve in water

A. Iron will form rust in the presence of Oxygen and Water!!

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Which of the following displays a physical property?

A.Titanium melts at a higher temperature than Ice B.Gasoline will burn in airC.Eggs produce a strong odor when hardboiledD.Gas is released when vinegar is added to baking soda

A. Titanium melts at a higher temperature than ice !!

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Which of the following could be described as a vapor?

A.steamB.Oxygen gasC.Carbon DioxideD.Chlorine gas

A. Steam!!

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In which of the following situations has a chemical change likely taken place? (choose all that apply) A.Smoke, light, and heat are produced when wood is burnedB.Spilled alcohol evaporates off of the table at room temperatureC.Bubbles form when Iron is added to Hydrochloric AcidD.Water turns red when Cool Aid is added

A and C!!

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In which of the following situations has a physical change taken place? (choose all that apply)

A. Carbon exposed to high heat and pressure can form diamondB. Blood will turn bright red in the presence of OxygenC. Tin can be pounded in thin sheetsD. Platinum is molded into a ring

A, C, and D!!

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The reaction below demonstrates which scientific law? 16 g of CH4 burns with 64 g of Oxygen gas gives 80 g of products.

A.The Law of Multiple ProportionsB.The Law of Independent AssortmentC.The Law of LawsD.The Law of Conservation of Mass

D. The Law of Conservation of Mass!!

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Which of the following are extensive properties? (choose all that apply)

A.MassB.DensityC.LengthD.Color

A, C !!

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Which of the following are intensive properties? (choose all that apply)

A.Boiling PointB.HardnessC.ConductivityD.Luster (Shininess)

A, B, C, and D!!

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Which of the following molecular diagrams shows the liquid phase?

A.B.C.

A B C

B!!

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A controlled experiment allows the scientist to isolate and test

A.A conclusionB.Several variablesC.A mass of informationD.A single variable

D. A Single Variable!!

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FINAL JEOPARDY!!Write on sheet of paper how much your group gambles

Put names of everyone in group and group #!

Fold and HAND IN!!

Write answer to final question on separate sheet of paper with group # on it

Final Jeopardy Question:

Propose a way to separate and collect the components of a mixture of Iron Filings, Sand, Salt, and Olive Oil.