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WorksheetsReversible and Irreversible Changes
Total questions: 15
Worksheet time: 18mins
What change of state is shown in the picture?
Solid to gas
Solid to liquid
Gas to liquid
Liquid to solid
When the temperature drops, icicles can form. Which change of state results in the formation of icicles?
melting
evaporation
freezing
condensation
To make coffee, water is heated in a tea kettle. Which change of state occurs in the teakettle?
melting
freezing
evaporation
condensation
It's time for a science joke!
See if you can answer the question:
What do solids, liquids and gases have in common?
Sally works in a waste management company and her team sorts the waste into two categories.
Mention the possible reason for sorting the waste.
Threat to environment:
Plastic Waste
Waste separation
Reduce, Reuse and Recycle
Stainless steel
Eco Friendly material:
Plastic Waste
Waste separation
Reduce, Reuse and Recycle
Stainless steel
Three R’S:
Plastic Waste
Waste separation
Reduce, Reuse and Recycle
Stainless steel
Biodegradable, recyclable and non recyclable:
Plastic Waste
Waste separation
Reduce, Reuse and Recycle
Stainless steel
Imagine you are at the beach with your friends, and you notice a lot of plastic bottles and bags on the sand and in the water.
Why are these plastic bottles and bags dangerous for our environment?
What could you do to help prevent more plastic from ending up in the ocean?
Which of the following is an irreversible change?
Burning of wood
Dissolving of salt in water
Emma and Ethan are working on a project about recycling. They want to make a poster to show people how important it is to recycle. What can they include on their poster?
a) Ways to recycle plastic bags
b) Reasons why it is not necessary to recycle
c) Tips for throwing away trash
d) Ways to save energy
Which of the following is an example of a substance that can exist in all three states of matter?
a) Carbon dioxide
b) Mercury
c) Water
d) Iron
Which of the following is an example of a non-recyclable item?
a) Plastic bags
packaging
b) Glass bottles
c) Apple cores
d) Styrofoam
