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WorksheetsPhysical and Chemical Changes
Total questions: 20
Worksheet time: 10mins
Is this a physical or chemical change?
Physical
Chemical
Which of the following observations would indicate a chemical change has happened? Select ALL correct answers.
a solid precipitate forms
heat energy is released
breaks into smaller pieces
folded in half
a gas is produced
In this example, what is the evidence a chemical change has occurred?
volume is increased
no energy is released
gas is being released
a precipitate has formed
Bubbles form when water boils. Is this evidence of chemical change?
Yes, because water is changing.
Yes, because the water is reacting.
No, because the vapor is still water.
No, because water doesn't react with anything.
Every chemical change involves a transfer of ______.
mass
volume
density
energy
This is an example of _____ change.
Physical
Chemical
Which type of change is occurring in the picture?
Chemical
Physical
What type of change has occurred?
Chemical
Physical
A chemical change is when
the chemical properties change
the chemical properties do not change
a change where the characteristics do not change the substance
Cutting your hair is an example of a ___________ change.
physical
chemical
A new substance is formed in a physical change.
true
false
This is an example of a _________ change.
physical
chemical
An element is
anything that takes up space
a substance made up of atoms of only one kind
two or more different elements in exact proportion
A compound is
anything that takes up space
a substance made up of atoms of only one kind
two or more different elements in exact proportion
A heterogeneous mixture is
a mixture in which individual substances are not evenly mixed
a mixture in which multiple substances are mixed
a mixture in which the individual substances are evenly mixed
A homogeneous mixture is
a mixture in which individual substances are not evenly mixed
a mixture in which multiple substances are mixed
a mixture in which the individual substances are evenly mixed
The part labeled "a" is the
element symbol
atomic number
element name
atomic weight
The part labeled "b" is the
element symbol
atomic number
element name
atomic weight
The part labeled "c" is the
element symbol
atomic number
element name
atomic weight
The part labeled "d" is the
element symbol
atomic number
element name
atomic weight
