Obj: Observe and describe states of matter.

Transcription

1 Do Now Date: March 6, 2017 Obj: Observe and describe states of matter. Copy and Solve: 1. If Dr. B has a 5.0L container at a pressure of 2 atm, how much pressure would it place on the walls of a 2.5L container? 2. What is the temperature of a gas if you have 3.0 moles, 33 atm, and 22.4L?

2 Monday, March 6, 2017 Today: W-Up, Notes: States of Matter, Activity: Heating Curves HW: Finish Heating Curve WS, Start Practice Test

3 States of Matter 1) What are the four states of matter? 2) At SP, water boils at. 3) One mole of any gas has a volume of 22.4L (at STP). How many liters do three moles occupy?

4 Big Ideas States of Matter Atoms and molecules are in constant motion in all forms of matter. Kinetic Molecular Theory

5 States of Matter Quick Video

6 Hot Water at -50 C Image from

7 Evaporation (aka Vaporization)

8 Glass The windows of your school are made of glass. Which of the following statements describes the motion of the molecules that make up the glass? A. The molecules of the glass are never moving. B. The molecules of the glass are always moving. C. The molecules of the glass move only when the sun warms the window. D. The molecules of the glass move only when the window is being opened or closed.

9 Motion of Molecules in a Liquid Which of the following describes the motion of the molecules in a glass of liquid water? A. The molecules are not moving. B. The molecules are moving at different speeds. C. The molecules are all moving at the same speed. D. The molecules move only when the glass of water is moving. Remember, temperature is the average speed of the molecules of a substance.

10 Water vs. Ice Why does liquid water take the shape of a cup it is poured into, but solid ice cubes do not? A. Because the molecules of liquid water are softer than the molecules of solid ice B. Because the molecules of liquid water are smaller than the molecules of solid ice C. Because the molecules of liquid water are moving but the molecules of solid ice are not D. Because the molecules of liquid water can easily move past one another but the molecules of solid ice cannot

11 Heating Curve of Water Heating Curve Animation On Web YouTube

12 Aurora Borealis Photo from

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14 Do Now Date: March 7, 2017 Obj: Collect data on the change in temperature of H 2 O as it changes from a (s) (l) (g). Copy and Answer: Draw a graph showing temperature vs. time as heat is added to H 2 O. Label each section of the graph. Think back to the heating curve from yesterday.

15 Tuesday, March 7, 2017 Lab: Heating Curve for Water HW: Finish Lab, Finish Practice Test

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17 Do Now Date: Wednesday, March 8, 2017 Obj: Complete data analysis of Heating Curve lab and prepare for unit test tomorrow. Copy: According to KMT collisions b/t particles are perfect elastic. This means no energy is lost. We say kinetic energy is conserved.

18 Wednesday, March 8, 2017 Today: W-Up, Practice Test Activity: Can Crush and BCR HW: Prepare for Unit Test Tomorrow: Gas Laws and States of Matter

19 An Equation Determine x from the equation below if time (T) = 40 minutes. x = 7 + 2T

20 Nature of Liquids What keeps liquids from changing into gases? What can we do to make them change?

21 Snowflakes ht tp :/ / w w w.it s. c al te c h. e d u/ ~ at o m ic /s n o w cr ys ta ls /c la ss / a jp

22 Stellar Dendrites Snowflakes ht tp :/ / w w w.it s. c al te c h. e d u/ ~ at o m ic /s n o w cr ys ta ls /c la ss / a jp

23 Stellar Dendrites Snowflakes Sectored Plates ht tp :/ / w w w.it s. c al te c h. e d u/ ~ at o m ic /s n o w cr ys ta ls /c la ss / a jp

24 Snowflakes ht tp :/ / w w w.it s. c al te c h. e d u/ ~ at o m ic /s n o w cr ys ta ls /c la ss / a jp Stellar Dendrites Snowflake Growing in Lab

25 Hollow Columns ht tp :/ / w w w.it s. c al te c h. e d u/ ~ at o m ic /s n o w cr ys ta ls /c la ss / a jp

26 Needles ht tp :/ / w w w.it s. c al te c h. e d u/ ~ at o m ic /s n o w cr ys ta ls /c la ss / a jp

27 Needles How is this like the periodic table?

28 Thermal Energy Which of the following has thermal energy? Living Person, Penny, Plant A. Only the living person B. Only the living person and the penny C. Only the living person and the dead plant D. The living person, the penny, and the dead plant

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30 Do Now Date: March 9, 2017 Obj: Test you knowledge and prepare for the unit test tomorrow. Do Now: When we talk about pressure (air pressure, vapor pressure ) in gases, what causes the pressure to exist? How can it be increased?

31 Thursday, March 9, 2017 Today: Computer Lab Activity on Boiling HW: Study for Unit Test Tomorrow!

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33 Do Now March 10, 2017 Obj: Crush the unit test. Complete: Take out a blank piece of paper for the test. Use the periodic table provided (not your own). All electronic devices away for the entire test. Place book bags on sides of room.

34 Friday, March 10, 2017 Unit Test! HW:

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36 Old Content Below

37 Do Now Date: March 11, 2016 Obj: Observe and explain the properties of dry ice (solid CO 2 ). Copy and Sign: In our lab today I will: not put dry ice in a closed container. not remove any dry ice from the lab. (signature)

38 Friday, March 11, 2016 Lab: CO 2 and States of Matter HW: Finish Lab

39 Procedures Observe dry ice on desktop. In water alone, in water with soap. Pour CO 2 gas over candle flame. Make observations and answer questions on lab sheet.

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41 Look over you notes one last time before we begin the unit test. Obj: Take unit test. Do Now:

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45 Old Content

46 Lung Cancer Detector

47 Warm-Up What is the pressure when 6.4 grams of CO 2 at 25 C are in a volume of 21.2 liters? How many liters will 2.3g of N 2 gas occupy? A sample of HCl gas is placed in a 256mL flask where it exerts a pressure of 8.9 kpa. What it the pressure if the gas is transferred to a 135 ml flask at the same temperature?

48 Collecting a Gas Over Water Based on kinetic theory, describe the motion of particles in a gas, liquid, and solid. Explain how this relates to the properties of each state. Include diagrams! How has your understanding of these states changed today? From

49 To be collected. Practice MCR After viewing the simulation, describe the motion of the atoms/molecules in a solid, liquid, and gas. Be sure to discuss the motion, how the atoms are arranges, kinetic energy, and the effects of temperature on the structures. Include diagrams where appropriate.

50 Dry Ice Safety This stuff is COLD! Be very careful. Goggles on at all times. Do not touch with bare skin (uses tongs). Do not put in a closed container. Do not take any from lab.

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53 Phase Diagrams Phase diagrams show the relationships between solid, liquid, and gas phases of a substance. Triple point represents the conditions where all three phases can exist.

54 Phase Diagrams Image from: m/states.html

55 Phase Diagrams Image from: m/states.html

56 Phase Diagrams /chm1045/notes/forces /Phase/Forces06.htm

57 Describe the Phases (H 2 O) C D E B F A /chm1045/notes/forces /Phase/Forces06.htm

58 Describe the Phases C D E B F A /chm1045/notes/forces /Phase/Forces06.htm

59 Triple Point The cell is cooled until ice, water, and water vapor are all present and in equilibrium. The temperature is then K by definition. A thermometer may be calibrated by inserting it into the central tube. math/3pt.html

60 Phase Diagrams (UF 6 ) motm/uf6/phasediag.gif

61 Phase Diagrams (H 2 O) er/images/den.gif