Will give brainliest a heating curve a. how the boiling point of a liquid changes over time b. how the freezing point of a liquid changes over time c. the phase change of a substance over time d. the chemical properties of a substance over time

Hey! The answer you are looking for today is D.

Here is why;

A heating curve graphically represents the phase transitions that a substance is undergoing as heat is added to it. The plateaus on the curve mark, the phase changes. The temperature remains constant during these phase transitions.

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a.)time

Explanation:

IN the international system time is measured in seconds, this is often used by scientifics more than regular people, since most of the measures of time that regular people use are often in hours or minutes, but for the international system the base for time is always in seconds.