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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 24 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.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
2.An egg is boiled for ten minutes and then cooled. Will it go runny again?
  • A.No, cooking it is a change that cannot be undone
  • B.Yes, if you shake it
  • C.Yes, as soon as it cools
3.A tray of water is left in the freezer overnight. What will you find in the morning?
  • A.Warm water
  • B.Solid ice
  • C.An empty tray
4.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
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.An ice pop is left on a sunny table. What happens to it?
  • A.It melts into a sticky liquid
  • B.It freezes harder
  • C.It turns into toast
7.Water is boiled in a pan with a lid on. What do you see on the inside of the lid?
  • A.Drops of water
  • B.Dry dust
  • C.Salt
8.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

LessonPrint · 2-PS1-4 · Set 24 · free to copy for classroom use

Answer key — Melt, Freeze, Boil, Cool

Set 24. Prints on its own sheet.

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

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