WorksheetsReversible and Irreversible Changes: Recap
Total questions: 20
Worksheet time: 7mins
What is a reversible change?
A change that allows the tested item to return to its original state or form.
A change that does not allow the tested item to return to its original state or form
What is a irreversible change?
A change that involves chemical reactions.
A change that involves physical actions only.
What is a reversible change?
A change that is permanent.
A change that is temporary.
What is an irreversible change?
A change that is temporary.
A change that is permanent.
What is a reversible change?
A change when the tested item returns to its original form or state.
A change when the tested item reacted and becomes another substance.
Which of these is a reversible change?
Melting a cube of butter in room temperature.
Making a cup of hot chocolate.
Which of these is a reversible change?
Folding the laundry before keeping in the closet.
Washing the stain off the dirty laundry.
Which of these is an irreversible change?
Melting a cube of ice.
Heating up sugar to make caramel.
Which of these is an irreversible change?
Cutting an apple into half.
Baking an apple pie.
What type of change is this?
The north pole of Magnet A is attracted to the south pole of Magnet B.
Reversible change
Irreversible change
What type of change is this?
Dissolving sugar in water.
Reversible change
Irreversible change
What type of change is this?
The candle wax melted after the candle was lighted for some time.
Reversible change
Irreversible change
What type of change is this?
The chicken was roasted in the oven.
Reversible change
Irreversible change
What type of change is this?
The collected milk is turned into cheese in the factory.
Reversible change
Irreversible change
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Burning a block of wood is an irreversible process because ___________.
this process makes the block of wood smaller.
this process produces ash as the new product.
Building a sandcastle requires the mixing of some sand and water. This is a reversible process because _________.
nothing happens to the state and form of the sand and water.
the sand and water are not known as sandcastle.
Germination of a seed is an irreversible process because ____________________.
the seed has grown into a whole new form which is the seedling.
the plant will produce seed again when it is matured.
Growth is an irreversible process for any kind of organism because the body of the organisms will continue to produce new cells until the body fails to function.
True
False
Not sure
When you place different items together, what do you get?
Combination
Mixture
