A geochemist examines a piece of metal that he found in the soil. He performs tests to identify the metal from its density, electrical conductivity, and melting point. Which statement best describes his investigation?
Answer
A
He is identifying the metal using physical properties only.
B
He is identifying the metal using chemical properties only.
C
He is identifying the metal using physical properties and chemical properties.
D
He is identifying the metal using neither physical properties or chemical properties.
Explanation
Density, electrical conductivity, and melting point are physical properties because they can be measured without changing the metal into a different substance. Chemical properties describe how a substance reacts to form new substances. Therefore, he is identifying the metal using physical properties only.
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