chemistry school based assessment -...

39
1 Chemistry School Based Assessment Leung Siu Wai [email protected] 30 th October, 2015 WE MUST DO ! What? When? & How?

Upload: lephuc

Post on 10-Mar-2018

221 views

Category:

Documents


2 download

TRANSCRIPT

Page 1: Chemistry School Based Assessment - hkedcity.netcd1.edb.hkedcity.net/cd/science/chemistry/nss/new/SBA_sharing_Oct...Chemistry School Based Assessment ... Investigating Effect of Concentration

1

Chemistry

School Based Assessment

Leung Siu Wai

[email protected]

30th October, 2015

WE MUST DO !

What? When? & How?

Page 2: Chemistry School Based Assessment - hkedcity.netcd1.edb.hkedcity.net/cd/science/chemistry/nss/new/SBA_sharing_Oct...Chemistry School Based Assessment ... Investigating Effect of Concentration

2

Qualitative Analysis (S5 QA)

Volumetric Analysis (S5 VA)

Redox Reactions (S5 / S6 EXPT)

Enthalpy Changes of Combustion of Alcohols (S5 EXPT)

Concentration Change on Reaction Rate (S5 EXPT)

Organic Reactions (S6 EXPT)

Practical Tasks ....... What Do We Do? List

Page 3: Chemistry School Based Assessment - hkedcity.netcd1.edb.hkedcity.net/cd/science/chemistry/nss/new/SBA_sharing_Oct...Chemistry School Based Assessment ... Investigating Effect of Concentration

3

Qualitative Analysis (S5 QA) #1

Volumetric Analysis (S5 VA)

Redox Reactions (S5 / S6 EXPT)

Enthalpy Changes of Combustion of Alcohols (S5 EXPT)

Concentration Change on Reaction Rate (S5 EXPT)

Organic Reactions (S6 EXPT)

Practical Tasks ....... What Do We Do?

Page 4: Chemistry School Based Assessment - hkedcity.netcd1.edb.hkedcity.net/cd/science/chemistry/nss/new/SBA_sharing_Oct...Chemistry School Based Assessment ... Investigating Effect of Concentration

4

Qualitative Analysis (S5 QA)

Volumetric Analysis (S5 VA)

Redox Reactions (S5 / S6 EXPT)

Enthalpy Changes of Combustion of Alcohols (S5 EXPT)

Concentration Change on Reaction Rate (S5 EXPT)

Organic Reactions (S6 EXPT)

Practical Tasks ....... What Do We Do?

Page 5: Chemistry School Based Assessment - hkedcity.netcd1.edb.hkedcity.net/cd/science/chemistry/nss/new/SBA_sharing_Oct...Chemistry School Based Assessment ... Investigating Effect of Concentration

5

Page 6: Chemistry School Based Assessment - hkedcity.netcd1.edb.hkedcity.net/cd/science/chemistry/nss/new/SBA_sharing_Oct...Chemistry School Based Assessment ... Investigating Effect of Concentration

6

S4 Post-examination Activities

Volumetric Analysis Training (S4)....... When ?

Page 7: Chemistry School Based Assessment - hkedcity.netcd1.edb.hkedcity.net/cd/science/chemistry/nss/new/SBA_sharing_Oct...Chemistry School Based Assessment ... Investigating Effect of Concentration

7

Reminders:

Preparing Standard Solution #2

Process of Titration #3

List of Apparatus #4

Word with –ette endings

Pipette

Burette

50 cm3 beaker (SB matches with Pipette)

100 cm3 beaker (LB matches with Burette)

Students Demonstration

Volumetric Analysis Training (S4)....... How ?

Must be rinsed with solution

Page 8: Chemistry School Based Assessment - hkedcity.netcd1.edb.hkedcity.net/cd/science/chemistry/nss/new/SBA_sharing_Oct...Chemistry School Based Assessment ... Investigating Effect of Concentration

8

Page 9: Chemistry School Based Assessment - hkedcity.netcd1.edb.hkedcity.net/cd/science/chemistry/nss/new/SBA_sharing_Oct...Chemistry School Based Assessment ... Investigating Effect of Concentration

9

Page 10: Chemistry School Based Assessment - hkedcity.netcd1.edb.hkedcity.net/cd/science/chemistry/nss/new/SBA_sharing_Oct...Chemistry School Based Assessment ... Investigating Effect of Concentration

10

Background information

Theory of Clock reaction AL Questions

Worksheet #5

Manual #6

Movie Clip ILPAC (4 mins)

Volumetric Analysis Training (S4)....... How?

Determining the Stoichiometry of the Reaction

between I2(aq) and S2O32-(aq)

a Na2S2O3(aq) + b I2(aq) Products

I2(aq) + I-(aq) I3

-(aq) Brown complex ions I2(aq) + 2S2O3

2-(aq) 2I- (aq) + S4O62- (aq)

tetrathionate ions

Page 11: Chemistry School Based Assessment - hkedcity.netcd1.edb.hkedcity.net/cd/science/chemistry/nss/new/SBA_sharing_Oct...Chemistry School Based Assessment ... Investigating Effect of Concentration

11

Floor Plan and Schedule #7

List of Appratus #4

Mark Scheme #8

Volumetric Analysis SBA (S5 VA)....... How?

Determine the concentration of iodine solution by a

standard sodium thiosulphate solution

I2(aq) + I-(aq) I3-(aq) Brown complex ions

I2(aq) + 2S2O3 2-(aq) 2I- (aq) + S4O6

2- (aq) tetrathionate ions

Page 12: Chemistry School Based Assessment - hkedcity.netcd1.edb.hkedcity.net/cd/science/chemistry/nss/new/SBA_sharing_Oct...Chemistry School Based Assessment ... Investigating Effect of Concentration

12

List of Appratus #9

Mark Scheme #10

Volumetric Analysis SBA (S5 VA)....... How?

Determine the concentration of potassium

permanganate

5Fe2+(aq) + MnO4-(aq) + 8H+(aq)

5Fe3+(aq) + Mn2+(aq) + 4H2O(l)

Page 13: Chemistry School Based Assessment - hkedcity.netcd1.edb.hkedcity.net/cd/science/chemistry/nss/new/SBA_sharing_Oct...Chemistry School Based Assessment ... Investigating Effect of Concentration

13

Qualitative Analysis (S5 QA)

Volumetric Analysis (S5 VA)

Redox Reactions (S5 / S6 EXPT)

Enthalpy Changes of Combustion of Alcohols (S5 EXPT)

Concentration Change on Reaction Rate (S5 EXPT)

Organic Reactions (S6 EXPT)

Practical Tasks ....... What Do We Do?

Page 14: Chemistry School Based Assessment - hkedcity.netcd1.edb.hkedcity.net/cd/science/chemistry/nss/new/SBA_sharing_Oct...Chemistry School Based Assessment ... Investigating Effect of Concentration

14

Redox Reactions (S5 / S6 EXPT)....... How?

Investigating Redox Reactions of Chlorine gas

Investigating Redox Reactions of Sulphur Dioxide

Page 15: Chemistry School Based Assessment - hkedcity.netcd1.edb.hkedcity.net/cd/science/chemistry/nss/new/SBA_sharing_Oct...Chemistry School Based Assessment ... Investigating Effect of Concentration

15

Cl2(g)

SO2(g)

List of Apparatus (1)

List of Apparatus (2)

Page 16: Chemistry School Based Assessment - hkedcity.netcd1.edb.hkedcity.net/cd/science/chemistry/nss/new/SBA_sharing_Oct...Chemistry School Based Assessment ... Investigating Effect of Concentration
Page 17: Chemistry School Based Assessment - hkedcity.netcd1.edb.hkedcity.net/cd/science/chemistry/nss/new/SBA_sharing_Oct...Chemistry School Based Assessment ... Investigating Effect of Concentration

17

Mark Scheme (Chlorine gas) #11

Mark Scheme (Sulphur dioxide gas) #12

Redox Reactions (S5 / S6 EXPT)....... How?

Investigating Redox Reactions of Chlorine gas

Investigating Redox Reactions of Sulphur Dioxide

Page 18: Chemistry School Based Assessment - hkedcity.netcd1.edb.hkedcity.net/cd/science/chemistry/nss/new/SBA_sharing_Oct...Chemistry School Based Assessment ... Investigating Effect of Concentration

18

Qualitative Analysis (S5 QA)

Volumetric Analysis (S5 VA)

Redox Reactions (S5 / S6 EXPT)

Enthalpy Changes of Combustion of Alcohols (S5 EXPT)

Concentration Change on Reaction Rate (S5 EXPT)

Organic Reactions (S6 EXPT)

Practical Tasks ....... What Do We Do?

Page 19: Chemistry School Based Assessment - hkedcity.netcd1.edb.hkedcity.net/cd/science/chemistry/nss/new/SBA_sharing_Oct...Chemistry School Based Assessment ... Investigating Effect of Concentration

19

Enthalpy Changes of Combustion of Alcohols

Page 20: Chemistry School Based Assessment - hkedcity.netcd1.edb.hkedcity.net/cd/science/chemistry/nss/new/SBA_sharing_Oct...Chemistry School Based Assessment ... Investigating Effect of Concentration

20

Enthalpy Changes of Combustion of Alcohols

Page 21: Chemistry School Based Assessment - hkedcity.netcd1.edb.hkedcity.net/cd/science/chemistry/nss/new/SBA_sharing_Oct...Chemistry School Based Assessment ... Investigating Effect of Concentration

21

Written Practical Assessment

Question Paper #13

Mark Scheme #14

Enthalpy Changes of Combustion of

Alcohols (S5 EXPT) ....... How?

Page 22: Chemistry School Based Assessment - hkedcity.netcd1.edb.hkedcity.net/cd/science/chemistry/nss/new/SBA_sharing_Oct...Chemistry School Based Assessment ... Investigating Effect of Concentration

22

Qualitative Analysis (S5 QA)

Volumetric Analysis (S5 VA)

Redox Reactions (S5 / S6 EXPT)

Enthalpy Changes of Combustion of Alcohols (S5 EXPT)

Concentration Change on Reaction Rate (S5 EXPT)

Organic Reactions (S6 EXPT)

Practical Tasks ....... What Do We Do?

Page 23: Chemistry School Based Assessment - hkedcity.netcd1.edb.hkedcity.net/cd/science/chemistry/nss/new/SBA_sharing_Oct...Chemistry School Based Assessment ... Investigating Effect of Concentration

23

Investigating Effect of Concentration on Reaction Rate

S2O32-(aq) + 2H+(aq) SO2(g) + S(s) + H2O(l)

Page 24: Chemistry School Based Assessment - hkedcity.netcd1.edb.hkedcity.net/cd/science/chemistry/nss/new/SBA_sharing_Oct...Chemistry School Based Assessment ... Investigating Effect of Concentration

24

Investigating Effect of Concentration on Reaction Rate

S2O32-(aq) + 2H+(aq) SO2(g) + S(s) + H2O(l)

Page 25: Chemistry School Based Assessment - hkedcity.netcd1.edb.hkedcity.net/cd/science/chemistry/nss/new/SBA_sharing_Oct...Chemistry School Based Assessment ... Investigating Effect of Concentration

25

Investigating Effect of Temperature on Reaction Rate

S2O32-(aq) + 2H+(aq) SO2(g) + S(s) + H2O(l)

Page 26: Chemistry School Based Assessment - hkedcity.netcd1.edb.hkedcity.net/cd/science/chemistry/nss/new/SBA_sharing_Oct...Chemistry School Based Assessment ... Investigating Effect of Concentration

26

Investigating Effect of Temperature on Reaction Rate

S2O32-(aq) + 2H+(aq) SO2(g) + S(s) + H2O(l)

Page 27: Chemistry School Based Assessment - hkedcity.netcd1.edb.hkedcity.net/cd/science/chemistry/nss/new/SBA_sharing_Oct...Chemistry School Based Assessment ... Investigating Effect of Concentration

27

Written Practical Assessment

Question Paper #15

Mark Scheme #16

Concentration Change on Reaction

Rate (S5 EXPT)....... How?

Page 28: Chemistry School Based Assessment - hkedcity.netcd1.edb.hkedcity.net/cd/science/chemistry/nss/new/SBA_sharing_Oct...Chemistry School Based Assessment ... Investigating Effect of Concentration

28

Qualitative Analysis (S5 QA)

Volumetric Analysis (S5 VA)

Redox Reactions (S5 / S6 EXPT)

Enthalpy Changes of Combustion of Alcohols (S5 EXPT)

Concentration Change on Reaction Rate (S5 EXPT)

Organic Reactions (S6 EXPT)

Practical Tasks ....... What Do We Do?

Page 29: Chemistry School Based Assessment - hkedcity.netcd1.edb.hkedcity.net/cd/science/chemistry/nss/new/SBA_sharing_Oct...Chemistry School Based Assessment ... Investigating Effect of Concentration

29

Qualitative Analysis (S5 QA)

Volumetric Analysis (S5 VA)

Redox Reactions (S5 / S6 EXPT)

Enthalpy Changes of Combustion of Alcohols (S5 EXPT)

Concentration Change on Reaction Rate (S5 EXPT)

Organic Reactions (S6 EXPT)

Practical Tasks .......

What ? When ? How ?

Page 30: Chemistry School Based Assessment - hkedcity.netcd1.edb.hkedcity.net/cd/science/chemistry/nss/new/SBA_sharing_Oct...Chemistry School Based Assessment ... Investigating Effect of Concentration

30

I hear …. I forget. I see …. I remember. I do …. I understand.

Practical Tasks .......

Why Do We Do?

Page 31: Chemistry School Based Assessment - hkedcity.netcd1.edb.hkedcity.net/cd/science/chemistry/nss/new/SBA_sharing_Oct...Chemistry School Based Assessment ... Investigating Effect of Concentration

31

Thank You !

Leung Siu-wai Anita [email protected]

Page 32: Chemistry School Based Assessment - hkedcity.netcd1.edb.hkedcity.net/cd/science/chemistry/nss/new/SBA_sharing_Oct...Chemistry School Based Assessment ... Investigating Effect of Concentration

32

Spare Time Left Extended Elaboration

Page 33: Chemistry School Based Assessment - hkedcity.netcd1.edb.hkedcity.net/cd/science/chemistry/nss/new/SBA_sharing_Oct...Chemistry School Based Assessment ... Investigating Effect of Concentration

33

http://minisite.proj.hkedcity.net/chemtech/eng/index.html

Chemistry Experimental Techniques (化學實驗技巧 )

Page 34: Chemistry School Based Assessment - hkedcity.netcd1.edb.hkedcity.net/cd/science/chemistry/nss/new/SBA_sharing_Oct...Chemistry School Based Assessment ... Investigating Effect of Concentration

34

Determining the concentration of chloride ions in a sea water

Determining the sodium hypochlorite content in a bleach

More Practical Tasks on

Volumetric Analysis .......

When Do We Do? How Do We Do?

Page 35: Chemistry School Based Assessment - hkedcity.netcd1.edb.hkedcity.net/cd/science/chemistry/nss/new/SBA_sharing_Oct...Chemistry School Based Assessment ... Investigating Effect of Concentration

35

Page 36: Chemistry School Based Assessment - hkedcity.netcd1.edb.hkedcity.net/cd/science/chemistry/nss/new/SBA_sharing_Oct...Chemistry School Based Assessment ... Investigating Effect of Concentration

36

http://minisite.proj.hkedcity.net/chemtech/eng/index.html

Chemistry Experimental Techniques (化學實驗技巧 )

Page 37: Chemistry School Based Assessment - hkedcity.netcd1.edb.hkedcity.net/cd/science/chemistry/nss/new/SBA_sharing_Oct...Chemistry School Based Assessment ... Investigating Effect of Concentration

37

Synthesis of 3-Methyl-1-butyl ethanoate (Fragrance of Banana)

Oxidizing ethanol to ethanoic acid and testing the ethanoic acid produced

Preparing and purifying 2-chloro-2-methylpropane

Organic Synthesis

Page 38: Chemistry School Based Assessment - hkedcity.netcd1.edb.hkedcity.net/cd/science/chemistry/nss/new/SBA_sharing_Oct...Chemistry School Based Assessment ... Investigating Effect of Concentration

38

Synthesis of 3-Methyl-1-butyl ethanoate

Fragrance of Banana

Page 39: Chemistry School Based Assessment - hkedcity.netcd1.edb.hkedcity.net/cd/science/chemistry/nss/new/SBA_sharing_Oct...Chemistry School Based Assessment ... Investigating Effect of Concentration

39

Thank You !

Leung Siu-wai Anita [email protected]