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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 15 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 tray of water is left in the freezer overnight. What will you find in the morning?
  • A.Warm water
  • B.An empty tray
  • C.Solid ice
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, as soon as it cools
  • C.Yes, if you shake it
3.A puddle sits in the hot sun all afternoon. What happens to it?
  • A.It dries up as the water goes into the air
  • B.It freezes
  • C.It gets deeper
4.Bread is toasted, then left to cool. What happens?
  • A.It stays toast
  • B.It turns back into bread
  • C.It melts
5.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
6.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
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.Salt
  • C.Dry dust
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 15 · free to copy for classroom use

Answer key — Melt, Freeze, Boil, Cool

Set 15. Prints on its own sheet.

  1. 1.Solid ice
  2. 2.No, cooking it is a change that cannot be undone
  3. 3.It dries up as the water goes into the air
  4. 4.It stays toast
  5. 5.No, baking makes a change that cannot be undone
  6. 6.It melts into a runny liquid
  7. 7.Drops of water
  8. 8.It freezes solid again

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