Question

As a sample of water is heated, the energy is used to overcome the attractions between the molecules so that they begin to move past one another. Then, the kinetic energy of its molecules increases. Which sections of the heating curve illustrate this process? A.A followed by CB.C followed by BC.B followed by CD.A followed by B

Answer 1

Given that as the sample of water is heated, the kinetic energy of its molecules increases.

Let's determine the sections of the heating curve which illustrates this process.

At point A, we can see the temperature of the water at 0 degrees, then as the temperature increases, the water molecules absorb more energy.

But as the phase changes, the temperature remains constant.

Since section A shows constant temerature, while section B also indicates constant temperature, we can sat section A followed by section B shows this process.

The sections which show as the energy overcome the attractions between molecules so that they begin to mover past one another can be said to be Section A followed by Section B

ANSWER:

D. A followed by B.