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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 21 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.The melted lolly is put back in the freezer. What happens?
  • A.It stays runny for ever
  • B.It freezes solid again
  • C.It turns into steam
2.An ice pop is left on a sunny table. What happens to it?
  • A.It melts into a sticky liquid
  • B.It turns into toast
  • C.It freezes harder
3.Cake batter is baked in the oven. Can the cake be turned back into batter?
  • A.Yes, by adding water
  • B.Yes, by cooling it
  • C.No, baking makes a change that cannot be undone
4.A snowman is left in the spring sunshine. What happens to it?
  • A.It grows bigger
  • B.It turns into ice cream
  • C.It melts into water
5.Bread is toasted, then left to cool. What happens?
  • A.It stays toast
  • B.It turns back into bread
  • C.It melts
6.Candle wax drips onto a cold plate. What happens to the drip?
  • A.It cools and goes hard
  • B.It catches fire
  • C.It stays runny
7.A cold can is taken out of the fridge on a warm day. What appears on the outside?
  • A.Tiny drops of water
  • B.Ice cubes
  • C.Nothing at all
8.Butter is left in a warm kitchen all day. What happens?
  • A.It goes hard
  • B.It goes soft and may melt
  • C.It turns to ice

LessonPrint · 2-PS1-4 · Set 21 · free to copy for classroom use

Answer key — Melt, Freeze, Boil, Cool

Set 21. Prints on its own sheet.

  1. 1.It freezes solid again
  2. 2.It melts into a sticky liquid
  3. 3.No, baking makes a change that cannot be undone
  4. 4.It melts into water
  5. 5.It stays toast
  6. 6.It cools and goes hard
  7. 7.Tiny drops of water
  8. 8.It goes soft and may melt

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