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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 23 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 snowman is left in the spring sunshine. What happens to it?
  • A.It grows bigger
  • B.It melts into water
  • C.It turns into ice cream
2.Water is boiled in a pan with a lid on. What do you see on the inside of the lid?
  • A.Salt
  • B.Dry dust
  • C.Drops of water
3.A tray of water is left in the freezer overnight. What will you find in the morning?
  • A.An empty tray
  • B.Solid ice
  • C.Warm water
4.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
5.Butter is left in a warm kitchen all day. What happens?
  • A.It turns to ice
  • B.It goes hard
  • C.It goes soft and may melt
6.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
7.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
8.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

LessonPrint · 2-PS1-4 · Set 23 · free to copy for classroom use

Answer key — Melt, Freeze, Boil, Cool

Set 23. Prints on its own sheet.

  1. 1.It melts into water
  2. 2.Drops of water
  3. 3.Solid ice
  4. 4.It freezes solid again
  5. 5.It goes soft and may melt
  6. 6.No, cooking it is a change that cannot be undone
  7. 7.It melts into a runny liquid
  8. 8.Tiny drops of water

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