Page 28 - ICSE Chemistry 6
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Review Your Learning
A. Answer in one word.
1. An early philosophical and spiritual fi eld of study that has made a
signifi cant contribu on on the evolu on of modern science _________________
2. A mythical and magical substance _________________
3. The process of transforming raw materials by physical or chemical
method into marketable food products _________________
4. A food preserva ve used in fruit products, beverages and salads _________________
5. Substances that promote a rac veness without aff ec ng the body’s
structure or func ons _________________
B. State whether the given statements are true (T) or false (F).
1. New discoveries and inven ons in science have made our lives more comfortable.
2. Physical processes take place to produce numerous useful substances.
3. The work of alchemists contributed in laying the founda on for modern chemistry and medicine.
4. All the cosme cs that we use today are made from combina ons of various chemical ingredients.
5. The natural fi bres are strong, wrinkle-resistant and dry quickly.
C. Match the columns.
Column A Column B
1. Dmitri Mendeleev (a) Law of par al pressures
2. Antoine Lavoisier (b) Gold foil experiment
3. John Dalton (c) Bohr atomic model
4. Niels Bohr (d) Modern periodic table of elements
5. Ernest Rutherford (e) Discovery of the role of oxygen in combus on
D. Explain the following terms.
1. Science 2. Philosopher’s stone 3. Penicillin 4. Aspirin
E. Answer the following questions.
1. How did the contribu on of the alchemists helped in the advancement of the civiliza on?
2. Discuss the contribu on of John Dalton.
3. Write in short about role of chemistry in tex le industry.
4. Why are cosme cs used?
5. List some common medicines and their uses.
PROJECT
Create a presenta on on the topic ‘Some Great Alchemists’. Find related informa on and images using the
Internet. Give the descrip on about their lives and their contribu ons to the fi eld of science and society.
Add audio and visual eff ects to your presenta on. Format it as per your choice.
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