WorksheetsCHANGES AROUND US
Total questions: 25
Worksheet time: 17mins
MELTING OF ICE IS WHAT CHANGE
PHYSICAL CHANGE
CHEMICAL CHANGE
BURNING OF WOOD IS WHAT CHANGE
PHYSICAL CHANGE
CHEMICAL CHANGE
What is a reversible change?
a change that cannot be reversed
a change that can be reversed
I don't know
a change where a new substance is formed
What is a change?
A change refers to a difference in shape, size, colour or any other property of a object.
A change occurs everyday and everywhere around us.
All of the above.
What do you think Irreversible change is?
Non - permanent change.
Permanent change
Activity -
Choose the following image which shows Physical change.
TRUE/FALSE :
Are all physical changes reversible?
True
False
Which among the following is a physical change?
cutting a log
burning a wood
ripening of fruit
cooking of food
Changes that lead to the formation of new substances are called_________.
Physical change
Chemical change
Which of the following changes cannot be reversed?
Milk to paneer
Cold milk to hot milk
Yarn to knitted sweater
Wet clothes to dry clothes
Folding of paper is a ____________ change while burning it is a _____________ change.
reversible , reversible
reversible, irreversible
irreversible, reversible
The iron blade of a soil digging tool is fixed to a wooden handle by the process of ______________.
melting
contraction
expansion
freezing
What type of change is the bursting of a cracker ?
Reversible change
Irreversible change
Physical change
None of these
When iron rim is heated it
Contracts
Expands
Dissolves
Evaporates
Burning of a candle is
Only a physical change
Only a chemical change
Both physical and chemical change
None of these
When object is cooled, it's size
Increases
Decreases
Remains same
None of the above
When a metal rim is fitted on a wood it is first
Expanded then contracted
Contracted then expanded
Melted then cooled
None of these
Kajal left her hammer outside. When she found it a few months later, some parts of the metal were covered with flaky, brown rust. Which type of change occurred when rust formed on the hammer?
chemical
electrical
thermal
physical
