Thursday, October 18th

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Thursday, October 18thAGENDA:1 – Bell Ringer & HW

Check2 – Heating Curve Lab3 – Heating Curve Lab

Analysis Announcements2.5 pts of extra credit for

coming for tutoring after school (up to 5 times / week)

Today’s Goal:Students will be able to construct a heating curve.Homework1. Finish Heating Curve Lab

Analysis – p. 12 - 132. Study for Quiz # 4 (cumulative)

Thursday, October 18thObjective: Students will be able to construct a heating curve.

Bell Ringer (p. 15):1. Summarize today the procedure for

today’s lab2. What do you expect to see when you

graph your data?

Have your homework assignment (p. 8-11) out on your desk for a stamp.You will not be able to do the lab without it.Do not touch anything until instructed!!

4 MINUTES REMAINING…

graph your data?

1minute Remaining…

graph your data?

30 Seconds Remaining…

BELL-RINGER TIME IS

Thursday, October 18thAGENDA:1 – Bell Ringer & HW

Check2 – Heating Curve Lab3 – Heating Curve Lab

Analysis Announcements2.5 pts of extra credit for

coming for tutoring after school (up to 5 times / week)

Today’s Goal:Students will be able to construct a heating curve.Homework1. Finish Heating Curve Lab

Analysis – p. 12 - 132. Study for Quiz # 4 (cumulative)

graph your data?

Shout OutsPeriod 1 –Shawntia

Period 2 –Rashad

Period 3 –Bria, Mariah, D’Angela, Aquinas, James, etc.

HomeworkToday1. Finish Heating Curve Lab Analysis – p. 12 - 132. Study for Quiz # 4 (cumulative)

Late3. Quiz Corrections4. Classroom Materials 5. Progress Reports 6. Phase Change HW7. Heating Curve HW

Week 6

Weekly AgendaMonday 10/15 – Quiz 3 ReviewTuesday 10/16 – Phases of MatterWednesday 10/17 – Heating CurvesThursday 10/18 – Heating Curve LabFriday 10/19 – Quiz 4

CHAMPS for October 18thC – Conversation – No talking unless directedH – Help – RAISE HAND for questionsA – Activity – Heating curve labM – Materials and Movement – Pen/Pencil, Packet. DO

NOT TOUCH ANYTHINGP – Participation – Work on Heating Lab AnalysisS – Success – Finish Lab

Heating Curve Lab (p. 12-13)Pre-lab Questions:

1. What are the three phases of matter? What are the particle arrangements in each? 2. During a Phase change do you expect to see any change in temperature?

Heating Curve Lab (p. 12)

Do not touch anything until instructed!!

Heating Curve Lab (p. 12-13)

We are using the Celsius scale (the

smaller one)

Heating Curve Lab (p. 12)Procedure:

1. Plug in the hot plate and allow it to heat up. 2. While the hot plate is warming up, fill your 250-mL beaker with ice. 3. Use the thermometer to measure the temperature of the ice. Record the temperature for 0 minutes

in Table 1. 4. Place the beaker of ice on the hot plate to begin heating. After 1 minute, observe the temperature of

the ice. Record the temperature in Table 1. Do not let the thermometer touch the sides or bottom of the beaker.

5. Continue measuring the temperature every 30 seconds. Stir the ice or water just before taking the temperature each time

6. Stop recording data when the temperature of the boiling water has not changes for 4 minutes.

Heating Curve Lab (p. 12-13)Time (min) Temp. (oC) Time (min) Temp. (oC) Time (min) Temp. (oC)

0 9 5.3 30 11 81

0.30 9 6 35 11.3 85

1 9 6.3 40 12 87

1.3 9 7 45 12.3 90

2 9 7.3 50 13 92

2.3 11 8 55 13.3 93

3 13 8.3 60 14 93

3.3 17 9 66

4 18 9.3 70

4.3 20 10 75

5 25 10.3 78

Heating Curve Lab (p. 13)

0 2 4 6 8 10 12 14 160

Heating Curve for Water

Time (minutes)

You should now graph your points

Heating Curve Lab (p. 13)Post-Lab Questions: 1. What does the line look like on your graph when temperature is changing? 2. What does the line look like when temperature is not changing? 3.What does the first flat region represent? What does the second flat region represent?

4. At times (flat regions of your graph), why does the temperature of a substance remain constant, even though energy is being added?

5. Label each segment of your graph, write which phase of matter is for each segment and for phase changes say what type of phase change is occurring (freezing, boiling, etc.)

6. During which phase were the water molecules the most free to move around? How could you tell? Can you relate this to kinetic energy?

Cornell Notes: Heating Curve

Phase Changes are flat because they

occur at a constant temperature

During a phase change you have a

mix of the two phases.

Kinetic Energy increases when Temperature

increases

Potential Energy increases during phase

changes

Classwork p. 8

Liquid

Classwork p. 8

Liquid

Melting

Boiling

Classwork p. 8

Liquid

Melting

BoilingPhase

Changes are flat

because…

Classwork p. 8

Phase changes are flat because there is no temperature change.

Kinetic energy (the energy of movement) increases with temperature.

Potential energy (energy from particle configuration) increases during melting and boiling.

Classwork p. 8

IIIIVII

Classwork p. 8

IIIIVIIIV

Classwork p. 8

IIIIVIIIV

Classwork p. 8

IIIIVIIIV

5 C55 C

Classwork p. 9

Classwork p. 9I, III, V

II, IV

Homework p. 9

Homework p. 92. Identify by letter (A-E) in which section the following are found: a. _______ Freezing (if cooling) b. _______ Particles farthest apart c. _______ Boiling d. _______ Particle motion is most restricted e. _______ Heat of fusion f. _______ All areas where energy change is potential only g. _______ Heat of vaporization h. _______ All areas where particles move past each other i. _______ Least kinetic energy j. _______ All areas where kinetic energy is changing k _______ most potential energy l. _______ All areas where phase changes occur m. _______ All areas in which the heat is making the particles move faster n. _______ All areas in which the heat is breaking the attractions or bonds between particles o. _______ All areas in which the particles are not changing their speed Now try an unlabeled heating curve for water without pictures and see how well you do!

Cornell Notes: Heating Curve

Phase Changes are flat because they

occur at a constant temperature

During a phase change you have a

mix of the two phases.

Kinetic Energy increases when Temperature

increases

Potential Energy increases during phase

changes

Exit Ticket (p. 16)

Describe each of the 6 phase transitions in terms of:1. What Phase -> What

Phase2. Endo or Exothermic?3. Increase or decrease in

entropy?

Thursday, October 18th

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