10) REVIEW Volume of unknown metal = 9 cubic centimeters, mass = grams. To determine density, divide the Mass by the Volume = 19.
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1 10) REVIEW Volume of unknown metal = 9 cubic centimeters, mass = grams. To determine density, divide the Mass by the Volume = 19.3 g/cm 3 = GOLD
2 9) MENISCUS: The curved upper surface of a liquid which is caused by surface tension.
3 8) IMMISCIBLE: A term used to describe liquids that are unable to dissolve in one another. For example: water and cooking oil.
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5 Al Iron = 0.2 (So 20% should be under the mercury
6 M = D x V M = 3g/cm 3 x 15.8 cm 3 = M = 47.4 g
7 Put table on white board but not this table
8 Immiscible means: incapable of being mixed. Write a short paragraph explaining your observation of the density column your group made. Include the words density and immiscible in your description.
9 Mass, Volume, and Matter Write two to three questions here that are answered by the notes! Mass is The amount of stuff (particles) in something Measured using a balance or scale Measured in grams (g) Other common units are milligram (mg) and kilogram (kg) Volume is The amount of space something takes up Measured using a graduated cylinder or beaker Measured in milliliters (ml) liters, cm 3, m 3 km 3 Other common units are liters (L) and kiloliters (kl) Matter is Anything that has mass and volume EQUATIONS Equations Density = M/V Volume = M/D Mass = V x D Units g/cm 3, (or ml) cm 3 (or ml) g
10 What are the three phases (or states) of Matter? Video: The Leidenfrost Effect
11 RA2 Volume and Density 1 cubic centimeter (solid) has the same volume as 1 milliliter (liquid)
12 The density of ice is 0.92 g/cm3 which is less than water so ice floats
13 Only 1/7th to 1/8th of an iceberg appears above the sea s surface
14 By controlling their density, submarines rise or sink.
15 RA2 Volume and Density
16 1) The amount of space an object takes up is called volume. 2) Liter, milliliter, cubic centimeter, liters, liquids, solids; 3) 2,500
17 Is it Matter? Make the following list and circle or put a check by things that you consider to be matter. Rocks Baby powder Milk Air Light Dust Love Cells Atoms Fire Smoke Salt Mars Jupiter Steam Rotten apples Heat Sound Waves Water Bacteria Oxygen Stars Gravity Magnetic Force Dissolved sugar Electricity Water Vapor 1) Describe the rule or reason you used to decide whether something is or is not matter. 2) Write the group rule 3) Write the class rule
18 Is it Matter? Make the following list and circle or put a check by things that you consider to be matter. Rocks Baby powder Milk Air Light Dust Love Cells Atoms Fire Smoke Salt Mars Jupiter Steam Rotten apples Heat Sound Waves Water Bacteria Oxygen Stars Gravity Magnetic Force Dissolved sugar Electricity Water Vapor 1) Describe the rule or reason you used to decide whether something is or is not matter. 2) Write the group rule 3) Write the class rule
19 1. What is defined as The amount of space something takes up? 2. What is defined as The amount of particles in something? 3. What SI variable is measured in grams? 4. What SI variable is measured in milliliters? 5. How many grams of matter exist in 13 milliliters of water (at 4 degrees Celsius)? 6. How is density measured? 7. What are the units for density? 8. What is the density of water (at 4 degrees Celsius)? 9. What force of attraction between the Earth and the Moon causes tides? 10. An astronaut's would change on the moon but not their
20 1. What is defined as The amount of space something takes up? Volume 2. What is defined as The amount of particles in something? Mass 3. What SI variable is measured in grams? Mass 4. What SI variable is measured in milliliters? Volume 5. How many grams of matter exist in 13 milliliters of water (at 4 degrees Celsius)? 13 grams (1 ml = 1cm 3 ) 6. How is density measured? Mass/Volume 7. What are the units for density? g/cm 3 Or g/ml 8. What is the density of water (at 4 degrees Celsius)? 1 g/cm 3 9. What force of attraction between the Earth and the Moon causes tides? Gravity 10. An astronaut's Weight would change on the moon but not their Mass
21 11) Think back on the pretest. If you were to take the aluminum boat and crush it till it sinks would the original density of the aluminum change?
22 11) Think back on the pretest. If you were to take the aluminum boat and crush it till it sinks would the original density of the aluminum change? Object A and Liquid 1 80% of 2.0g/ml = 1.6g/ml
23 M = D x V, M = 2g/ml x 2L x 2000ml/L M = 4000g
24 V = M/D V = 120g/3g/cm3 V = 40 cm3
25 When do I use the VOLUME units of: cubic centimeters (cm 3 ) versus milliliters (ml)?
26 10) REVIEW Volume of unknown metal = 9 cubic centimeters, mass = grams. D = M/V What equation is needed? 173.7g Density = Mass/Volume 9cm 3 = 19.3g/cm 3
27 Will the density of the ALUMINUM change if I crush it in to a little ball and step on it?
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31 Finding the Density of Air Materials: Plastic bottle, Vacuum pump with rubber valve and washer, 1000 ml beaker or flask, Electronic scale. Graduated cylinder page
32 Procedure: 1. Determine volume of the inside of Plastic Bottle (PB). 2. Measure the mass of PB + valve (V) + washer (W) + air; record data. 3. Remove as much air as possible using the vacuum pump 4. Measure the mass of PB + valve + washer (- air); record data 5. Calculate the mass of air that left the PB 6. Determine the Density of air = Mass (of air) Volume (of bottle); record data Trial # 1 2) Mass of: 4) Mass of: 5) Mass of: 1) Volume 6) Density (PB + V + (PB + V + W) air pumped of air of Air 2 W + Air) (air removed) out of PB (ml) (g/ml) (g) (g) (g) 2 3
33 Procedure: 1. Determine volume of the inside of Plastic Bottle (PB). 2. Measure the mass of PB + valve (V) + washer (W) + air; record data. 3. Remove as much air as possible using the vacuum pump 4. Measure the mass of PB + valve + washer (- air); record data 5. Calculate the mass of air that left the PB 6. Determine the Density of air = Mass (of air) Volume (of bottle); record data Trial # 2) Mass of: (PB + V + W + Air) (g) 4) Mass of: (PB + V + W) (air removed) (g) 5) Mass of: air pumped out of PB (g) 1) Volume of air (ml) 6) Density of Air (g/ml) 1 2 3
34 The actual density of air is.0013 g/ml 1) How close was your measurement? Why was it off? 2) How does the density of air compare with the densities of solids and liquids that you have measured in past lessons? 3) Why do some things (like helium balloons) float in air?
35 Mass, Volume, and Matter Write two to three questions here that are answered by the notes! Mass is The amount of stuff (particles) in something Measured using a balance or scale Measured in grams (g) Other common units are milligram (mg) and kilogram (kg) Volume is The amount of space something takes up Measured using a graduated cylinder or beaker Measured in milliliters (ml) Other common units are liters (L) and kiloliters (kl) Matter is Anything that has mass and volume
36 Sinking and Floating in Water Prediction Actual Predict and record on your Student Sheet 2.2 if the object will sink or float.
37
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