Question

In general, when a substance changes from a solid to a liquid,
A.
the density of the substance remains the same.
B.
the density of the substance decreases.
C.
the density of the substance increases.
D.
the substance no longer has density since density is a property only solids have

Answer 1

When a substance changes from a solid to a liquid, generally:

B. the density of the substance decreases.

This is because most substances become less dense as they transition from solid to liquid. However, it's important to note that water is an exception; ice (solid water) is less dense than liquid water, which is why ice floats. But for the majority of substances, they tend to become denser when transitioning to a liquid state.