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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 5 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.Bread is toasted, then left to cool. What happens?
  • A.It stays toast
  • B.It turns back into bread
  • C.It melts
2.A snowman is left in the spring sunshine. What happens to it?
  • A.It melts into water
  • B.It grows bigger
  • C.It turns into ice cream
3.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
4.An egg is boiled for ten minutes and then cooled. Will it go runny again?
  • A.Yes, as soon as it cools
  • B.Yes, if you shake it
  • C.No, cooking it is a change that cannot be undone
5.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
6.The melted lolly is put back in the freezer. What happens?
  • A.It freezes solid again
  • B.It stays runny for ever
  • C.It turns into steam
7.Butter is left in a warm kitchen all day. What happens?
  • A.It goes soft and may melt
  • B.It turns to ice
  • C.It goes hard
8.A puddle sits in the hot sun all afternoon. What happens to it?
  • A.It freezes
  • B.It dries up as the water goes into the air
  • C.It gets deeper

LessonPrint · 2-PS1-4 · Set 5 · free to copy for classroom use

Answer key — Melt, Freeze, Boil, Cool

Set 5. Prints on its own sheet.

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

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