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The Chinese University of Hong Kong PGDE The Chinese University of Hong Kong PGDE Presentation...
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The Chinese University of Hong KongThe Chinese University of Hong Kong PGDE PGDE
Presentation Package
for a Chemistry Lesson
ACIDS
Author ListAuthor ListGroup 4Group 4
• Name Duty
• Chan Pui Sze Photo Scanning & information Collectio
n
• Lee Suk Ching Sound Effect & Information Collection
• Sin Wai Ling Graphics & information Collection
• Yick Ho Kuen Slide Design & Information Collection
• Part 1 Introduction
• Part 2 What are the properties of acids? What precautions we have to take in diluting acid?
• Part 3 Daily examples of acids
• Part 4 Follow-up questions
• F.4 chemistry students with average ability
• at the average age of 15
• come across daily products containing acid
• most are active
In this lesson, we use• pictures to recall
students’ memory • photos and graphics to
show the properties of acid
• sound effect in the quiz
• Introduction of acids
in daily life
• Properties of acids
• Common use of acids
• Danger of acids
• A small quiz
ACIDS
Name Formula Locations
Acetic acid HC2H3O2 Vinegar
Acetylsalicylic acid HC9H7O4 Aspirin
Ascorbic acid H2C6H6O6 Vitamin C
Citric acid H3C6H5O7 Lemon juice, citrus fruits
Hydrochloric acid HCI Gastric juices(digestive fluid in stomach)
Sulfuric acid H2SO4 Batteries
Click T or F for the correct answer .
For correct answer For incorrect answer
1. Vinegar is a dilution solution of ethanoic acid. T/F
2. Most acids have a bitter taste. T/F
3. Acids can turn litmus paper from red to blue. T/F
4. Acid-alkali neutralizations produce salts. T/F
5. When you dilute a concentrated acid, always
add the acid slowly to a large amount of water. T/F
Click T or F for the correct answer .
For correct answer For incorrect answer
1. Vinegar is a dilution solution of ethanoic acid. T/F
2. Most acids have a bitter taste. T/F
3. Acids can turn litmus paper from red to blue. T/F
4. Acid-alkali neutralizations produce salts. T/F
5. When you dilute a concentrated acid, always
add the acid slowly to a large amount of water. T/F