Language of Chemistry - ICSE STD 7 CHEMISTRY Questions

Q 1MCQ1 Mark

Copper carbonate when heated, it turns :

A
Blue
B
Green
✓
Black
D
Yellow

Answer: C.

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Q 2MCQ1 Mark

Balancing a chemical equation is based on

✓
Law of conservation of mass
B
Mass of reactants and products
C
Symbols and formulae
D
None of the above

Answer: A.

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Q 3MCQ1 Mark

A chemical equation is a statement that describes a chemical change in terms of

✓
symbols and formulae
B
energy
C
number of atoms
D
colours

Answer: A.

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Q 4[1 Mark Question Answer]1 Mark

Write symbolic representation for the following word equation and balance them :
Iron + Sulphur → Iron sulphide.

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Q 5[1 Mark Question Answer]1 Mark

Write symbolic representation for the following word equation and balance them
Aluminium + Chlorine → Aluminium chloride.

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Q 6[1 Mark Question Answer]1 Mark

Write symbolic representation for the following word equation and balance them :
Calcium oxide + Water → Calcium hydroxide

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Q 7[1 Mark Question Answer]1 Mark

Write symbolic representation for the following word equation and balance them :
Carbon + Oxygen → Carbon dioxide.

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Q 8[1 Mark Question Answer]1 Mark

Write symbolic representation for the following word equation and balance them :
Calcium carbonate → Calcium oxide + Carbon dioxide.

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Q 9[2 Mark Question Answer]2 Marks

What information do you get from the equation $H_2+ Cl_2 → 2HCl ?$

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Q 10[2 Mark Question Answer]2 Marks

Differentiate between in A balanced and a skeletal chemical equation.

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Q 11[2 Mark Question Answer]2 Marks

Differentiate between in Chemical reaction and chemical equation.

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Q 12[2 Mark Question Answer]2 Marks

Differentiate between in Reactants and products?

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Q 13[2 Mark Question Answer]2 Marks

State what you would observe when the following substance is heated in a glass test tube Copper (II) carbonate Red lead .

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Q 14[5 Mark Question Answer]5 Marks

State four conditions necessary for a chemical reaction to take place.

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Q 15Fill in the blanks.1 Mark

In some chemical reactions an insoluble ________ is formed when two solutions are mixed.

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Q 16Fill in the blanks.1 Mark

The basic conditions necessary for a chemical reaction is _______

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Q 17Fill in the blanks.1 Mark

During a chemical reaction transfer of ________ takes place.

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Q 18Fill in the blanks.1 Mark

The substances formed as a result of a chemical reaction are called _______

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Q 19Fill in the blanks.1 Mark

The substances which undergo chemical change are called _______

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Q 20TRUE / FALSE1 Mark

A chemical equation gives only qualitative information of a chemical reaction.

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Q 21TRUE / FALSE1 Mark

When iron and sulphur are heated together a grey mass is formed which is attracted by a magnet .

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Q 22TRUE / FALSE1 Mark

A black residue is formed when sugar is heated .

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Q 23TRUE / FALSE1 Mark

When potassium iodide solution is added to lead acetate solution a red precipitate is formed.

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Q 24TRUE / FALSE1 Mark

Hydrogen sulphide has rotten egg smell .

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Language of Chemistry question types

Language of Chemistry questions

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Language of Chemistry CHEMISTRY - Language of Chemistry

Language of Chemistry question types

Language of Chemistry questions

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