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Look at the equation for mercury (Hg), which is undergoing a phase change.

Hg (s)
Hg (l)

What does this equation show?

Select all that apply.

Responses

Mercury is being heated.Mercury is being heated.

Liquid mercury is becoming a solid.Liquid mercury is becoming a solid.

Mercury is being cooled.Mercury is being cooled.

Solid mercury is becoming a liquid.

1 answer

The equation you provided shows the phase change of mercury (Hg) from solid to liquid. Therefore, the correct response would be:

  • Solid mercury is becoming a liquid.

The other statements do not apply to the equation:

  • Mercury is being heated. (This is implied but not explicitly shown in the equation itself.)
  • Liquid mercury is becoming a solid. (This is the opposite of what is shown.)
  • Mercury is being cooled. (This is also implied but not explicitly shown in the equation itself.)

So, the only applicable response here is:

  • Solid mercury is becoming a liquid.