Bellringers

Phases of MATTER

UNIT

Phases of Matter Unit Monday, October 17, 2011

• Objective: SWBAT describe the four states of matter and how it relates to thermal/kinetic energy.

• BR: What are the states of matter? What is the difference at the molecular level between a gas and a solid?

• Lesson:1. Pass out green picture of phase changes (CHANGE ARROW on

DEPOSITION)2. Intro to States of Matter notes3. Go over pg 78 #1-6 (talk as a group and then share out)4. Front of States of Matter wksht

• HW: Reinforcement sheet

Phases of MATTER Unit Tuesday, October 18

• Objective: SWBAT compare and contrast exo and endothermic reactions.

• BR: 1. What does the prefix endo- mean? What does exo- mean?

• Lesson:1. Notes on exo and endothermic reactions2. It doesn’t phase me3. Hot/Cold Pack

• HW:

Wednesday, October 19

• Objective: SWBAT interpret a phase change graph and explain how intermolecular forces are involved in a phase change.

• BR: What must happen to change a solid to a liquid? (write what you know now then come back at the end of class and add to it!)

• Lesson:1. Go over test(s) 2. Notes on IF’s

• HW:

Thursday, October 20

• Objective: SWBAT- same as Wed. • BR: 1. Describe what is happening when a glass

of water “sweats”• Lesson:

1. Finish Notes on Phase change graphs (and simultaneously go over -It doesn’t phase me graphs)

• HW: Phase Change WS (paragraph with fill ins)

FRIDAY

• HAD A SUB-• Watched a matter of state and did both green

phase change graph ws’s

Monday October 24• Objective: SWBAT calculate molecular mass of compounds.• BR: How much does an atom of Carbon “weigh”? How much do 3

atoms of Carbon weigh? How many carbon atoms are there in glucose C6H12O6)?

• Lesson:1. Go over BR

1. Atomic number, mass

2. “Notes” on Molecular Mass wksht

• HW: Read Lab and do Pre-lab Questions

Molecular Mass AnswersPractice Problems: Find the molecular weight of the following

molecules. Show your work! 1. NaCl = 23 +35= 58 8. Ba(OH)2 = 137+ (2x16) + (2x1)= 171

2. KOH = 56 9. C4H10 = 58

3. H2O = 18 10. CH4 = 16

4. N2 = 28 11. C12H22O11 = 342

5. C6H14 = 86 12. H2SO4 = 98

6. HCl = 36 13. SbCl3 = 228

7. SO2 = 64 14. P2O5 = 142

• EXTENSION:• Determine the molecular mass of the following

compounds. Be sure to show your work:

1. Al(NO3)3

2. Al2(SO4)3

3. 5 BaCrO4

4. NaHCO3

5. 3 Fe(NO3)3(H2O)9

• Determine the molecular mass of the following compounds. Be sure to show your work:

1. Al(NO3)3= 27+(14x3)+(16 x 9)=213 amu

2. Al2(SO4)3= (2x27)+(32x3)+(16 x 12)=342 amu

3. 5 BaCrO4= 5(137 +52 + (16 x 4))= 1265 amu

4. NaHCO3 = 23 + 1 + 12 + (16x3)=213 amu

5. 3 Fe(NO3)3(H2O)9 =

3(56 +(14x3) + (16x18) + (1x18)) = 1212 amu

Phases of Matter Unit Tuesday, October 25, 2011

• Objective: SWBAT explain how intermolecular forces affect evaporation rates.

• BR: Put the following in order of what would evaporate fastest to slowest:– Low Molecular Mass with High IF’s– Low Molecular Mass with Low IF’s– High Molecular Mass with High IF’s

• Lesson:1. Evaporation Lab

• HW: Finish Lab

Evaporation Rates

• HIGH EVAPORATION RATES will be recognized by a BIG change in temperature

• Molecules that evaporate quickly will have – LOW MOLECULAR MASS and – LOW/(WEAK) IF’s

– (remember that evaporation is an ENDOTHERMIC process and will therefore take energy AWAY from the thermometer

Evaporation Rates

• SLOW EVAPORATION RATES will be recognized by a SMALL change in temperature

• Molecules that evaporate slowlly will have – HIGH MOLECULAR MASS and – HIGH/(STRONG) IF’s

– (remember that evaporation is an ENDOTHERMIC process and will therefore take energy AWAY from the thermometer

Chemical Formulas for Evaporation Lab

• Water- H2O

• Isopropyl Alcohol- C3H7OH

• Pentanol- C5H11OH

• Pentane- C5H12

Wednesday October 26

• Objective: SWBAT explain how intermolecular forces affect evaporation rates.

• BR: (only write what is underlined) Read analysis question #2 from the lab. Summarize in a few points : How would you determine if a molecule has H bonds? (what are some clues)

• Lesson:1. Go over BR2. Go over evaporation lab3. Evap Lab Review Sheet 4. Clicker/Review

• HW: Review for test!!!

Thursday, October 27

• Objective: SWBAT review• BR: 1.?• Lesson:

1. Study Guide

• HW: REVIEW!!!

Friday, October 28

• TEST DAY