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Which of the following is an example of a physical change?
food digesting
a change if phase or state of matter
melting wax
the metal changes volume
a physical change occurs when matter changes in size, shape, and or phase
the substance gives off energy
A wood log burning
baking cookies
What happens when the bonds between molecules break down or form?
food digesting
a change if phase or state of matter
melting wax
the metal changes volume
a physical change occurs when matter changes in size, shape, and or phase
the substance gives off energy
A wood log burning
baking cookies
Which of the following is NOT a chemical change?
food digesting
a change if phase or state of matter
melting wax
the metal changes volume
a physical change occurs when matter changes in size, shape, and or phase
the substance gives off energy
A wood log burning
baking cookies
Which of the following is NOT a physical change
food digesting
a change if phase or state of matter
melting wax
the metal changes volume
a physical change occurs when matter changes in size, shape, and or phase
the substance gives off energy
A wood log burning
baking cookies
What is true of a physical change?
food digesting
a change if phase or state of matter
melting wax
the metal changes volume
a physical change occurs when matter changes in size, shape, and or phase
the substance gives off energy
A wood log burning
baking cookies
How can you tell a chemical change has taken place when silver tarnishes?
food digesting
a change if phase or state of matter
melting wax
the metal changes volume
a physical change occurs when matter changes in size, shape, and or phase
the substance gives off energy
A wood log burning
baking cookies
Which of the following is NOT evidence that a chemical change has taken place?
food digesting
a change if phase or state of matter
melting wax
the metal changes volume
a physical change occurs when matter changes in size, shape, and or phase
the substance gives off energy
A wood log burning
baking cookies
Which of the following is an example of a physical change?
food digesting
a change if phase or state of matter
melting wax
the metal changes volume
a physical change occurs when matter changes in size, shape, and or phase
the substance gives off energy
A wood log burning
baking cookies
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