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WorksheetsGrade 7 Physical and Chemical Changes Quiz
Total questions: 25
Worksheet time: 11mins
Which is a way that a piece of paper can go through a chemical change?
fold the paper in half
soak the paper in water
burn the paper with fire
cut the paper with scissors
Baking soda and vinegar combine to make carbon dioxide. This is a ...
Chemical Change
Physical Change
None of these
Hydrochloric acid reacts with potassium hydroxide to produce a salt, water, and heat. This is a ...
Chemical Change
Physical Change
None of the above
A pellet of sodium is sliced into two. Name the type of change.
Chemical change
Physical Change
Sugar dissolves in water. What is the change seen?
Chemical Change
Physical Change
None of the above
Grass growing in a lawn is an example of a ....
Physical Change
Chemical Change
Colour change seen when a drop of food colouring is added to water, is a _________ change.
physical
chemical
Identify the change shown in the picture.
Irreversible physical change
Irreversible chemical change
reversible physical change
reversible chemical change
When a drop of iodine solution is added to bread, it turns blue-black in colour. What change does this represent ?
physical change
chemical change
Observe the picture and choose the correct option.
Irreversible physical change
Reversible physical change
When a candle burns, both physical and chemical changes occur.
True
False
Which of the following is an example of a physical change ?
burning of wood
photosynthesis
melting of ice-cream
ripening of fruit
Is milk going sour a physical change or a chemical change?
Physical
Chemical
What happened to change the state of the butter?
Heat was taken away.
More heat energy was added.
More chemicals were added.
The particles of the butter slowed down.
Cutting your hair is an example of a ___________ change.
physical
chemical
This is an example of a _________ change.
physical
chemical
A physical change is
a change where the chemical properties of the substance do not change
a change where the chemical properties of the substance change
a change where the composition of the substance changes
A change in the size, shape, or state of matter is a ______.
chemical change
physical change
Which phrase most accurately describes a chemical change?
A change in size.
A change in appearance.
A change in taste.
A change at the molecular level.
A cup of water is left outside for two days. When it was checked there was only half a cup of water left. What happened?
evaporation; chemical change
condensation; physical change
evaporation; physical change
condensation; chemical change
What is an example of a chemical change that happens inside your body?
Food being broken down by enzymes in your stomach.
Food being broken down into small pieces by your teeth.
Food being moved to your stomach.
Water being absorbed inside your large intestine.
The image shows a bowl of dry ice. What is the process seen here?
Freezing
Boiling
Melting
Sublimation
Cutting an orange into wedges is a physical or a chemical change?
Chemical Change
Physical Change
