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Melt, Freeze, Boil, Cool is a free printable Grade 2 science worksheet on predicting what heating or cooling will do to a material, aligned to NGSS performance expectation 2-PS1-4. It prints 8 questions with an answer key on its own sheet of paper, in 25 versions that each ask different questions, so no two students in the class work from the same page. Print it from the browser or download it as a PDF — no account, no email.

Set 19 of 25 · the same problems every time you open this link.

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Set 1 has all 25 in a single PDF. All 25 sets ask different questions.

Melt, Freeze, Boil, Cool

2-PS1-4

NameDate

Circle the best answer.

1.An egg is boiled for ten minutes and then cooled. Will it go runny again?
  • A.Yes, if you shake it
  • B.Yes, as soon as it cools
  • C.No, cooking it is a change that cannot be undone
2.Chocolate is warmed in a bowl over hot water. What happens?
  • A.It turns hard and black
  • B.It disappears
  • C.It melts into a runny liquid
3.A puddle sits in the hot sun all afternoon. What happens to it?
  • A.It freezes
  • B.It gets deeper
  • C.It dries up as the water goes into the air
4.Cake batter is baked in the oven. Can the cake be turned back into batter?
  • A.Yes, by adding water
  • B.No, baking makes a change that cannot be undone
  • C.Yes, by cooling it
5.The melted lolly is put back in the freezer. What happens?
  • A.It freezes solid again
  • B.It turns into steam
  • C.It stays runny for ever
6.A cold can is taken out of the fridge on a warm day. What appears on the outside?
  • A.Ice cubes
  • B.Nothing at all
  • C.Tiny drops of water
7.An ice pop is left on a sunny table. What happens to it?
  • A.It freezes harder
  • B.It turns into toast
  • C.It melts into a sticky liquid
8.Candle wax drips onto a cold plate. What happens to the drip?
  • A.It stays runny
  • B.It cools and goes hard
  • C.It catches fire

LessonPrint · 2-PS1-4 · Set 19 · free to copy for classroom use

Answer key — Melt, Freeze, Boil, Cool

Set 19. Prints on its own sheet.

  1. 1.No, cooking it is a change that cannot be undone
  2. 2.It melts into a runny liquid
  3. 3.It dries up as the water goes into the air
  4. 4.No, baking makes a change that cannot be undone
  5. 5.It freezes solid again
  6. 6.Tiny drops of water
  7. 7.It melts into a sticky liquid
  8. 8.It cools and goes hard

Last reviewed 2026-09-05. Aligned to 2-PS1-4 of the Next Generation Science Standards.