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Chapter 2

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Published in: Chemistry
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Chapter 2, Chemistry, ICSE, Class 6

Suranjana M / Aurangabad

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Qualification: M.Tech (IIT,Kharagpur - 2000)

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  1. Test - Chemistry, Chapter-2, Date: Total Marks:50 ALL QUESTIONS ARE COMPULSORY 19.02.2017, Class- VI (ICSE) Time : 2 hours FOR ONE SPELLING MISTAKE ( 1/4 ) MARK WILL BE DEDUCTED l.FiIl in the blanks by correct words a. b. c. d. e. g. On heating, solids first change to state. The liquids take the shape of containing to move. [5] state and then to , because the molecules are The process of conversion of a gas into a liquid is called is the representation of a substance by symbols The liquids and solids are Latin name of Silver is A compound consists of or more kinds of elements combined together in proportion. ll. Give the chemical formulae for the following: 1. Potassium hydroxide 2. Calcium chloride 3. Aluminium hydroxide 4. Sodium chloride 5. Sulphuric acid Ill.Distinguish between solids, liquids and gases. IV. Distinguish between element, compound and mixture. V. Distinguish between metals and non-metals. VI. Statements given below are incorrect. Write the correct statements. a. b. c. d. e. f. g. h. j. A liquid can have more than one free surfaces. Non mentals conduct electricity. Intermolecular spaces in case of solids are too large Solids have definite volume, because its molecules are free to move Noble gases can react with other elements N2 represents 2 atoms of Nitrogen Gases can flow, but liquids cannot. Gases are highly compressible, as they have very small intermolecular spaces Baking Soda has formula Na2C03 The formula of Lead Oxide is LdO Vll. Write the names of [5] [3] [4] a. b. c. d. e. f. g. h. A carbonate of sodium An acid containing Sulphur A chemically inactive element An element which is good conductor of electricity Smallest unit of matter, which has independent existence A sulphide of calcium The smallest particle of an element, which takes part in chemical reaction Latin name of mercury 1
  2. Test - Chemistry, Chapter-2, Date: Vlll. Define with examples 19.02.2017, Class- VI (ICSE) a. b. c. d. e. f. Matter Solid Atom Molecules Element Compound Answer the following questions: a. b. c. d. e. Why are noble gases sometimes called rare gases? Explain how different states of matter differ on the basis of arrangement of molecules? State four characteristics of Gas. State four important properties of non metals What do the following symbols stand for: Si (ii) (iii) (iv) Cl )(. Write the following as instructed: a. Chemical names Of ii. iii. HN03 NaN03 CaO cusoa NaHC03 b. Metal, Non metals, noble gas or compound [2] [3] [2] [2] [1] [2] ii. iii. vi. vii. viii. Hydrogen Silicon Iodine Calcium carbonate Lead Magnesium Argon C02 2

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