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WorksheetsChemical and Physical Changes
Total questions: 50
Worksheet time: 23mins
Which of the following examples represents a physical change?
When sugar dissolves in water a ______________ change occurs.
Physical change
Chemical Change
Hydrochloric acid reacts with potassium hydroxide to produce a salt, water,and heat.
Chemical Change
Physical Change
Which of the following is evidence of a physical change?
New substance
Shape Change
Light produced
Gas released.
A physical change is
a change where the characteristics do not change the substance
a change where the characteristics do change the substance
a change where the chemistry changes
Chewing food to break it down into smaller particles represents a _________ change, but the changing of starch into sugars by enzymes in the digestive system represents a ___________change.
Chemical then Physical
Physical then Chemical
Both Physical
Both Chemical
What is the definition of chemical change?
any change that results in the formation of one (or more) new chemical substance(s).
changing of only the appearance of the object
matter cannot be created or destroyed, only change form
changes affecting the form of a chemical substance, but not its chemical composition.
Which of the following is NOT a clue that a chemical reaction has taken place?
Changing size
Changing color
A gas being formed
Formation of a precipitate
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
Which of these is an example of a new substance being formed?
a nail rusting
a wall being painted
water changing to steam
paper being folded
Which example best describes a physical change?
iron rusting
charcoal burning
an ice cube melting
a marshmallow burning
Glass bottle that is shattered
Chemical Change
Physical Change
Baking soda and vinegar combine to make carbon dioxide
Chemical Change
Physical Change
Which of the following are examples of a Chemical Change?
Iron Rusting
Gas Burning
Breaking a glass
Boiling water
Burning Wood
Hydrochloric acid reacts with potassium hydroxide to produce a salt, water,and heat.
Chemical Change
Physical Change
A pellet of sodium is sliced in two
Chemical change
Physical Change
Sugar dissolves in water
Chemical Change
Physical Change
Which of the following is a example of physical change ?
burning of wood
photosynthesis
melting of ice-cream
ripening of fruit
What does the picture represent ?
physical change
chemical change
A chemical change may involve
Evolution of gas
Change in temperature
Change in colour
All of the above
Which of the following is NOT an example of chemical change?
sour milk
burning wood
breaking a pencil
rust
Students observed a piece of iron change from shiny to rusty. What caused this change?
a chemical reaction
a heat reaction
a cold reaction
a physical reaction
Which is the best example of a new substance forming?
lighting a match
cutting a piece of paper
popping a balloon
hitting a nail with a hammer
Which is an example of a different substance being formed?
glass breaking
metal melting
water freezing
wood burning
Bending metal
Physical Change
Chemical Change
Boiling Water
Physical Change
Chemical Change
Dissolving Sugar
Physical Change
Chemical Change
A Candle Burning
Physical Change
Chemical Change
Nail Rusting
Physical Change
Chemical Change
A chemical change is a change in
an item's properties such as size, shape, density
an item that creates a new substance, releases light or heat
an item's sound
an item's look or state of matter
A physical change is a change
in an item's properties like its shape, size or density.
that creates a new substance or emits light or heat
that creates a smell
that cannot be undone
What is the freezing point of water on the Farenheit scale?
0 degrees
212 degrees
32 degrees
100 degrees
150 degrees
What is the freezing point of water on the Celsius scale?
100 degrees
0 degrees
212 degrees
32 degrees
What is the boiling point of water on the Farenheit scale?
212 degrees
100 degrees
0 degrees
32 degrees
What is the boiling point of water on the Celsius scale?
212 degrees
0 degrees
32 degrees
100 degrees
