Free Printable Physical and Chemical changes

1.

WHAT IS A CONDITION WHICH IS DIFFERENT FROM THE PRE-EXISTING CONDITION?

a)

MR BEAST

b)

CHANGE

c)

ACID

d)

OXYGEN

2.

WHICH CHANGE IS USUALLY REVERSIBLE AND TEMPORARY?

a)

PHYSICAL CHANGE

b)

CHEMICAL CHANGE

c)

CARBON

d)

PRODUCT

3.

A + B --> AB

WHICH REACTION IS THIS?

a)

COMBINATION REACTION

b)

DISPLACEMENT REACTION

c)

THOR RAGNAROK REACTION

d)

EXAMINATION REACTION

4.

CHOOSE AN EXAMPLE OF DISPLACEMENT REACTION

a)

$2H_{2\ }+\ O_{2\ }-->\ 2H_{2\ }O$

b)

$Fe+S\ -->\ FeS$

c)

$Zn\ +\ H_2SO_4\ \ -->\ ZnSO_{4\ }+\ H_2$

d)

$ACD\ +\ BSG\ -->\ ACDBSG$

5.

WHAT IS THE COLOUR OF CORRODED ALUMINUM?

a)

DULL WHITE

b)

SULPHUR

c)

GREEN

d)

BLACK

6.

WHICH METAL IS USED ON IRON OBJECTS IN GALVANIZATION?

a)

TIN

b)

ZINC

c)

LEATHER

d)

IRON

7.

CALCIUM ______ IS USED TO REMOVE THE MOISTURE FROM THE AIR.

a)

CHROMIUM

b)

CANDY

c)

CHLORIDE

d)

SULPHATE

8.

WHAT IS THE AIM OF THIS ACTIVITY?

a)

TO PROVE THAT CARBON AND CHLORIDE ARE NEEDED FOR BURNING.

b)

TO PROVE THAT OXYGEN AND MOISTURE ARE NEEDED FOR RUSTING.

c)

YOU AND SOMEONE ARE NEEDED TO BURN COAL.

d)

OXYGEN AND CARBON ARE NEEDED FOR DANCING.

Physical and Chemical changes

Total questions: 8

Worksheet time: 4mins

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