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LANGUAGE OF CHEMISTRY

Total questions: 13

Worksheet time: 2mins

Name
Class
Date
1.

SUBSTANCES THAT TAKE PART IN A CHEMICAL REACTION IS CALLED

a)

PRODUCTS

b)

REACTANTS

c)

CHEMICALS

d)

NONE OF THESE

2.

A SYMBOL IS USED TO REPRESENT ______

AN FORMULA IS USED TO REPRESENT ______

a)

REACTANT, PRODUCT

b)

CHEMICAL REACTION, CHEMICAL EQUATION

c)

CATALYST, ENZYME

d)

NONE OF THESE

3.

THE EVOLUTION OF GAS IS REPRESENTED BY A

a)

DOWNWARDLY DIRECTED ARROW

b)

SIDEWAY DIRECTED ARROW

c)

UPWARDLY DIRECTED ARROW

d)

NO ARROW

4.

WHEN ACETIC ACID IS ADDED TO BAKING SODA, ____ TAKES PLACE WITH A EVOLUTION OF GAS

a)

BRISK EFFERVESCENCE, H2O

b)

BRISK EFFERVESCENCE, O2

c)

EFFERVESCENCE, CO2

d)

BRISK EFFERVESCENCE, CO2

5.

MAGNESIUM BURNS IN AIR OR OXYGEN TO GIVE A

a)

BRILLIANT YELLOW LIGHT

b)

BRILLIANT WHITE LIGHT

c)

BRILLIANT BLUE LIGHT

d)

BRILLIANT BLACK LIGHT

6.

WHAT WILL HAPPEN WHEN MAGNESIUM RIBBON IS ADDED TO DILUTE HYDROCHLORIC ACID ?

a)

HYDROGEN GAS WILL NOT BE EVOLVED

b)

SIDES OF THE TEST TUBE WILL BREAK

c)

ENERGY IS EVOLVED

d)

ALL OF THESE

7.

NITROGEN COMBINES WITH OXYGEN AT

a)

20000 DEGREE CELCIUS

b)

30000 DEGREE CELCIUS

c)

3000 DEGREE FAHRENHIET

d)

5432 DEGREE FAHRENHIET

8.

THE COLOUR OF BARIUM SULPHATE PRECIPITATE IS

a)

WHITE

b)

COLOURLESS

c)

CURDY WHITE

d)

PINK

9.

THE COLOUR OF IRON HYDROXIDE IS

a)

COLOURLESS

b)

PALE GREEN

c)

RAINBOW

d)

GREEN

10.

WHEN AMMONIA GAS AND HYDROGEN CHLORIDE GAS COMBINE ____ IS FORMED

a)

AMMONIUM SULPHIDE

b)

AMMONIUM HYDROXIDE

c)

AMMONIUM CHLORIDE

d)

AMMONIUM NITRIDE

11.

HYDROGEN SULPHATE SMELLS LIKE

a)

ROTTEN FISH

b)

DIRTY SOCKS

c)

ROTTEN EGGS

d)

PERFUME

12.

MAGANESE DIOXIDE ACTS AS A CATALYST IN

a)

DECOMPOSITION OF CALCIUM CARBONATE

b)

BREAKDOWN OF NITRUS OXIDE

c)

DECOMPOSITON OF BARIUM SULPHATE

d)

DECOMPOSITION OF POTTASIUM CHLORATE

13.

SOME CHEMICAL REACTION TAKES PLACE BY THE ACTION OF LIGHT AND SOME TAKES PLACE BY THE ACTION OF ELECTRICITY. SO THESE REACTIONS ARE CALLED

a)

BIOCHEMICAL, PHOTOCHEMICAL

b)

PHOTOCHEMICAL, ELECTROCHEMICAL

c)

ELECTROCHEMICAL, BIOCHEMICAL

d)

NONE OF THESE