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WorksheetsUnit 15: Physical and Chemical Change
Total questions: 24
Worksheet time: 23mins
What is a chemical change?
change in size, shape, form, or state of matter
two or more substances combine
New materials are formed as a result of the change.
Change only in the appearance of a substance
What is a physical change?
involves a chemical reaction
two or more substances combined
a change in size, shape, form, or state of matter
substance becomes new substance with new properties
The change of state from a gas to a liquid is an example of:
chemical change
physical change
The melting of butter when it is let out in warm room is an example of:
Physical change
chemical change
Burning of wood is an example of:
Physical change
chemical change
Shredding paper is an example of:
Physical change
chemical change
Which of the following is an example of chemical change?
Baking a cake
cutting cloth
breaking glass
chopping vegetables
Which of the following is an example of physical change?
Which one is an example of chemical change?
Which one is not an example of chemical changes?
reaction of plaster of Paris with water
melting butter
reaction of vinegar with bicarbonate of soda
burning
What do you call a silvery-grey powder formed when some objects burn?
plaster of Paris
smoke
ash
baking soda
A physical change may or may not involve a change in state.
True
False
The new materials formed during chemical change can be changed back to their original forms.
True
False
As the candle burns, the candle becomes shorter.
True
False
When materials burn, they give off heat and light.
True
False
Which of the following are examples of a physical change?
cutting your hair
burning paper
melting butter
dissolving sugar in water
Give two (2) examples of Physical Change.
Bending a paper clip is an example of a
physical change
chemical change
horizontal change
