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

LessonPrint · 2-PS1-4 · Set 9 · free to copy for classroom use

Answer key — Melt, Freeze, Boil, Cool

Set 9. Prints on its own sheet.

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

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