Question

The graph shows the heating curve of a chemical substance as it undergoes state changes from solid to liquid to gas. Analyze the curve, and answer the questions

The substance is entirely solid between positions
B and C
Particles of the substance are in the liquid state and are gaining kinetic energy between positions
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Answer 1

For plato its A and B then C and D

Step-by-step explanation:

I took the test

Answer 2

Particles of the substance are in liquid state will gain kinetic energy between positions C and D.

Step-by-step explanation:

Problem it tells us that between B an C the substance is solid, but I would say that is solid between A and B while between B and C it is a melting process in which particles will gain energy to transform from solid to liquid.

Now between C and D the particles of the liquid will receive energy which is transformed in kinetic energy so the participles will move faster.

Between D and E the particles the energy received is spent by the particles to pass from liquid state to vapors state.