Which is an example of a physical change?
A) Water freezing at 0°C.
B) Burning gasoline.
C) A potato turns brown after being cut open and left out.
D) Heating magnesium metal causes it to turn into an off white solid.
E) When exposed to certain metals, hydrogen peroxide will bubble and fizz.
Correct Answer:
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Q9: The two types of pure substances are
A)compounds
Q10: Which is an example of a chemical
Q11: Which is an example of a physical
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Q13: Which is an example of a physical
Q15: Which is an example of both a
Q16: Which is an example of both a
Q17: An example of a chemical change is
A)the
Q18: Which of the examples below is a
Q19: Which is an example of a chemical
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