properties of matter. phenomenon ice floats in water. why does the ice in a glass of ice water...
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Properties of Matter
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PhenomenonIce floats in water.
Why does the ice in a glass of ice water float?
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Explore:
Predict what will happen when an
unopened Coke is placed in water.
Option 1: Write a complete sentence.
Option 2: Drawn a picture.
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Explore:
Record the actual results.
Option 1: Write a complete sentence.
Option 2: Draw a picture.
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Explore:
Predict what will happen when an unopened Diet
Coke is placed in water.
Option 1: Write a complete sentence.
Option 2: Drawn a picture.
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Explore:
Record the actual results.
Option 1: Write a complete sentence.
Option 2: Draw a picture.
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What are the differences between Coke & Diet Coke that might account for your results?
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How can you determine what will sink and what will float?
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Why does one float and the other sinks?
50,000,000g10,000,000mL
3g30mL
Sinks Floats
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Why does one float and the other sinks?
50g40mL
626g7,825mL
Sinks Floats
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Why does one float and the other sinks?
100g5mL
100g5,000mL
Sinks Floats
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Why do both float when they are different sizes?
62.5g125mL
125g250mL
FloatsFloats
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DensityThe measure of how tightly packed the molecules of a
substance are.
Density = Mass / Volume
Density = g/mLEach pure substance has characteristic physical properties
that can be used to identify it. Density is one of these properties.
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What microscopic pattern(s) do you notice about what sinks and what floats in water?
Sinks Floats
5g/mL20g/mL
1.25g/mL
0.5g/mL
0.5g/mL
0.1g/mL0.08g/mL
0.02g/mL
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Density of Water1g/mL
1g/cm3
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Write a statement about the microscopic patterns you observed about what floats or sinks in water.
Sinks Floats
5g/mL20g/mL
1.25g/mL
0.5g/mL
0.5g/mL
0.1g/mL0.08g/mL
0.02g/mL
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Explain:
What could be changed to make the Coke float?
(without opening the can)
Explain why this would work.
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Making a Density Column to Determine Relative Density
Relative Density
the density of a substance in relation to another
Create a density column that has all 3 liquids and colors.
Illustrate your results.
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Making a Density Column to Determine Relative Density
Questions:
Which substance is the most dense?
Which substance is less dense than the other two?
Create a 2 dimensional model of your density column that explains the unobservable reason for
the color separation.
(Hint: How can you illustrate density?)
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PhenomenonIce floats in water.
Why does the ice in a glass of ice water float?
Read your initial answer to this question.
Revise your answer and add an illustration that supports your answer.
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Homework
1.)Explain why the two cubes have the same density even though they have different volume and mass.
2.) Can two substances with different density be made of
identical material?
100g5mL
500g25mL