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Which of these is an example of a physical property?

A. Mercury has a melting point of -33.83 °C.
B. Potassium forms a base when exposed to water.
C. Mercury is toxic to the nervous system.
D. Ethanol releases heat when reacting with oxygen.

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Final answer:

A physical property is a characteristic that can be observed or measured without changing the substance's composition, such as the melting point of mercury.


Explanation:

Physical property: A physical property is a characteristic that can be observed or measured without changing the substance's composition. Melting point of mercury: -38.84°C is a physical property as it describes the temperature at which a substance changes from a solid to a liquid state. Example: Ice melts at 0°C.


Learn more about Physical and Chemical Properties here:

https://brainly.com/question/1935242


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