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1

Chemistry Practical Tasks

Leung Siu Wai

Ho Fung College (Sponsored by Sik Sik Yuen)

19th June, 2014

WE DO !

Why? What? When? & How?

2

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

Practical Tasks .......

Why Do We Do?

3

The Nine Generic

Skills

Communication Skills

Collaboration Skills

Creativity

Critical Thinking

Skills

Self-management Skills

Information Technology

Skills

Study Skills

Numeracy Skills

Problem Solving Skills

4

Volumetric Analysis

Qualitative Analysis and Redox Reactions

Enthalpy Changes of Combustion of Alcohols

Concentration/Temperature Change on Reaction Rate

Organic Synthesis

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

5

Volumetric Analysis

Qualitative Analysis and Redox Reactions

Enthalpy Changes of Combustion of Alcohols

Concentration/Temperature Change on Reaction Rate

Organic Synthesis

Practical Tasks ....... When Do We Do? How Do We Do?

6

Volumetric Analysis....... When Do We Do? How Do We Do?

S4 Post-examination Activities

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

Chemistry Experimental Techniques (化學實驗技巧 )

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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?

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Volumetric Analysis

Qualitative Analysis and Redox Reactions

Enthalpy Changes of Combustion of Alcohols

Concentration/Temperature Change on Reaction Rate

Organic Synthesis

Practical Tasks ....... When Do We Do? How Do We Do?

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#1

#2

#3 #6

#5

#4

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#1

#2

#3 #6

#5

#4

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Volumetric Analysis

Qualitative Analysis and Redox Reactions

Enthalpy Changes of Combustion of Alcohols

Concentration/Temperature Change on Reaction Rate

Organic Synthesis

Practical Tasks ....... When Do We Do? How Do We Do?

18

Enthalpy Changes of Combustion of Alcohols

19

Enthalpy Changes of Combustion of Alcohols

20

Volumetric Analysis

Qualitative Analysis and Redox Reactions

Enthalpy Changes of Combustion of Alcohols

Concentration/Temperature Change on Reaction Rate

Organic Synthesis

Practical Tasks ....... When Do We Do? How Do We Do?

21

Investigating Effect of Concentration on Reaction Rate

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

22

Investigating Effect of Concentration on Reaction Rate

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

23

Investigating Effect of Concentration on Reaction Rate

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

24

Investigating Effect of Temperature on Reaction Rate

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

25

Investigating Effect of Temperature on Reaction Rate

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

26

Investigating Effect of Temperature on Reaction Rate

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

27

Volumetric Analysis

Qualitative Analysis and Redox Reactions

Enthalpy Changes of Combustion of Alcohols

Concentration/Temperature Change on Reaction Rate

Organic Synthesis

Practical Tasks ....... When Do We Do? How Do We Do?

28

29

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

Chemistry Experimental Techniques (化學實驗技巧 )

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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

Preparing nylon

Organic Synthesis

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Fragrance of Banana

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Synthesis of 3-Methyl-1-butyl ethanoate

Fragrance of Banana

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

Practical Tasks .......

Why Do We Do?

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