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© Copyright Pearson Prentice Hall Slide 1 of 25 Density > Determining Density Density is the ratio of the mass of an object to its volume. 3.4
© Copyright Pearson Prentice Hall Slide 2 of 25 Density > Determining Density Density is an intensive property that depends only on the composition of a substance, not on the size of the sample. 3.4
© Copyright Pearson Prentice Hall Slide 3 of 25 Density > So, the density for a given substance defines the relationship between mass and volume Like any relationship, it gives you 2 conversion factors For gold, 19.3 g/cm 3 and 1 cm 3 /19.3 g
© Copyright Pearson Prentice Hall Slide 4 of 25 Density > Determining Density The density of corn oil is less than the density of corn syrup. For that reason, the oil floats on top of the syrup. 3.4
© Copyright Pearson Prentice Hall SAMPLE PROBLEM Slide 5 of A student finds a shiny piece of metal that she thinks is aluminum. In the lab, she determines the metal has a volume of 245 cm 3 and a mass of 612 g. Is this metal aluminum?
© Copyright Pearson Prentice Hall SAMPLE PROBLEM Slide 6 of 25 Well, we can find the density of the material and compare it to the density in the table for aluminum and see if they match. 612 g = 2.50 g 245 cm 3 cm 3 From the table, the density of aluminum is 2.70 g/cm3, so no the metal is not pure aluminum
Slide 7 of 25 © Copyright Pearson Prentice Hall Density > Density and Temperature Experiments show that the volume of most substances increases as the temperature increases. Meanwhile, the mass remains the same. Thus, the density must change. The density of a substance generally decreases as its temperature increases. 3.4
© Copyright Pearson Prentice Hall Slide 8 of 25 Practice Problems Problem Solving 3.47 Solve Problem 47 with the help of an interactive guided tutorial. for Sample Problem 3.10
© Copyright Pearson Prentice Hall SAMPLE PROBLEM Slide 9 of
© Copyright Pearson Prentice Hall SAMPLE PROBLEM Slide 10 of
© Copyright Pearson Prentice Hall SAMPLE PROBLEM Slide 11 of
© Copyright Pearson Prentice Hall SAMPLE PROBLEM Slide 12 of
© Copyright Pearson Prentice Hall Slide 13 of 25 Practice Problems Problem Solving 3.48 Solve Problem 48 with the help of an interactive guided tutorial. for Sample Problem 3.11
© Copyright Pearson Prentice Hall Slide 14 of Section Quiz 1. If 50.0 mL of corn syrup have a mass of 68.7 g, the density of the corn syrup is a g/mL. b g/mL. c.1.36 g/mL. d.1.37 g/mL.
© Copyright Pearson Prentice Hall Slide 15 of Section Quiz 2. What is the volume of a pure gold coin that has a mass of 38.6 g? The density of gold is 19.3 g/cm 3. a cm 3 b.2.00 cm 3 c.38.6 cm 3 d.745 cm 3
© Copyright Pearson Prentice Hall Slide 16 of Section Quiz 3. As the temperature increases, the density of most substances a.increases. b.decreases. c.remains the same. d.increases at first and then decreases.
© Copyright Pearson Prentice Hall Slide 17 of 25
Slide 1 of 25 Density 3.4. © Copyright Pearson Prentice Hall Slide 2 of 25 Density > Determining Density Density is the ratio of the mass of an object.
End Show © Copyright Pearson Prentice Hall Slide 1 of Measurements and Their Uncertainty On January 4, 2004, the Mars Exploration Rover Spirit landed.
Slide 1 of 43 Slide 1 of 43 Conversion Problems 3.3.
Slide 1 of 34 Chemistry © Copyright Pearson Prentice Hall Slide 2 of 34 The Flow of Energy—Heat and Work The temperature of lava from a volcano.
NOTESWHAT IS DENSITY? Density is the amount of mass per unit of volume; it describes how much matter is packed into a space.
Slide 1 of 33 International System of Units 3.2. Slide 2 of 33 © Copyright Pearson Prentice Hall The International System of Units > Measuring with SI.
Slide 1 of 26 Chemistry. © Copyright Pearson Prentice Hall Slide 2 of 26 Properties of Matter > Describing Matter Properties can be classified as: a.
DENSITY. KEY QUESTIONS What is density? How is density measured? How do you calculate density?
Slide 1 of 21 Chemistry2.2. © Copyright Pearson Prentice Hall Slide 2 of 21 Mixtures Panning is one way to separate gold from a mixture of gold and materials.
September 16 th 2009 Objectives HP: SWBAT calculate operations to the correct significant figure. HP: SWBAT express numbers in both standard form and scientific.
What is Density? DENSITY is a physical property of matter, as each element and compound has a unique density associated with it. Density defined in a qualitative.
Activity 10 Follow-up Were there differences in your results from one group to another? Why did we use the average to compare to table 3 in activity 9?
CHAPTER 8 DENSITY. Density Density describes the amount of mass in a given volume of a substance. In other words, density describes how closely packed.
Slide 1 of 48 Measurements and Their Uncertainty
Slide 1 of 48 Measurements and Their Uncertainty Section Significant Figures in Measurements.
In a kitchen experiment, you empty a tray of ice cubes into a bowl of water. After an hour or so, when the mixture has come to thermal equilibrium, you.
Slide 1 of 25 Chemistry 2.3. © Copyright Pearson Prentice Hall Elements and Compounds > Slide 2 of 25 Distinguishing Elements and Compounds How are elements.
Physical Properties & Density. Physical Properties How would you describe someone or something? How would you describe someone or something? weight, height,
Slide 1 of 19 Chemistry. © Copyright Pearson Prentice Hall Slide 2 of 19 Chemical Reactions Iron is abundant, easy to shape when heated, and relatively.
Energy Day 2 Specific Heat and Calorimetry Youve learned that one calorie, or J, is required to raise the temperature of one gram of pure water.
Measurement A quantity that has both a number and a unit.
Chapter 17 Notes. Overview of Chapter 17 Properties of Matter Solids Density Others (brittleness, tensile Strength, etc) Fluids (liquids and gases) DensityBuoyancyViscosity.
1 Section 8.2 Determining Absolute Age. Objectives Summarize the limitations of using the rates of erosion and deposition to determine the absolute age.
Gas Laws Chemistry Class. Objectives Define absolute zero Define absolute zero Convert °C to K Convert °C to K Solve problems involving temperature, pressure,
Scientific Measurement Chemistry chapter 2. Scientific Measurement Distinguish between quantitative and qualitative measurements. Distinguish between.
Density How compact is the material?. How close the atoms or molecules are to each other More than“heaviness”- density includes how much space an object.
Identification of Matter Unit 1 Physical Science HS Credit Mrs. Rubel.
The. of and a to in is you that it he was.
Chap 1 Section 2- Describing Matter Characteristics of matter The SI system – units of measurement Conversion of the units and calculation Identify physical.
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