Quiz 12: WS10.1 Answer

Kowloon Tong School (Secondary Section)

F.2 Integrated Science Quiz 12: WS10.1

Words Translation (10 marks)

	Chinese term	English term
1	酸	Acid
2	乳酸	Lactic acid
3	檸檬酸	Citric acid
4	乙酸	Ethanoic acid
5	氫氯酸	Hydrochloric acid
6	苦	Bitter
7	似肥皂的	Soapy
8	氨	Ammonia
9	氫氧化鈉	Sodium hydroxide
10	氫氧化鉀	Potassium hydroxide

Fill in the Blanks (11 marks)

1        In our daily life, there are many foods, drinks and flavourings that taste sour. It is because they

contain (1)acids: yohurt contains (2)lactic acid, lemons contain (3)citric acid, vinegar contains (4)ethanoic acid.

2        Many household cleaners and personal care products also contain acids. For example, toilet bowl

cleaners contain (5)hydrochloric acid

3    (6)alkalis are the chemical opposite of acid. They generally taste (7)bitter and feel (8)soapy or slippery. They are also commonly found in many household

cleaners. For example, glass cleaners contain (9)ammonia, drain and oven cleaners usually contain (10)sodium hydroxide or (11)potassium hydroxide.

Challenging Questions (Bonus 3 marks)

1.      What is the taste of acid? sour

2.      What is the taste and the feel of alkalis:

Alkalis tastes bitter and feel soapy or slippery