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Did Mixing Make Something New? is a free printable Grade 5 science worksheet on using mixing results as evidence of whether a new substance formed, aligned to NGSS performance expectation 5-PS1-4. It prints 7 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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Did Mixing Make Something New?

5-PS1-4

NameDate

Read the record, then answer the questions.

1.Read the record, then answer the questions.

Did Mixing Make Something New?

Observations from mixing four pairs of substances, with the mixture left for ten minutes. WHAT HAPPENED WHEN MIXED Sand and water .......... sand settles out again unchanged Salt and water .......... clear liquid; salt reappears when dried Vinegar and soda ........ fizzes, gas given off, new solid left Milk and lemon juice .... thickens into lumps that do not undo Each pair was mixed in the same size beaker.

  1. 1. What was kept the same for each pair?
  2. 2. What happened when vinegar and soda were mixed?
  3. 3. Why is the vinegar and soda result different from the salt and water one?
  4. 4. What happened to the salt and water?
2.A mixture gets warm by itself when two liquids are poured together. What might that show?
  • A.A change has happened that may have made a new substance
  • B.The beaker is broken
  • C.The room is warm
3.Sugar is stirred into tea and vanishes. A student says a new substance formed. What is wrong?
  • A.The sugar has only dissolved, and it is still there
  • B.Sugar always makes new substances
  • C.Nothing is wrong
4.What is the best evidence that vinegar and baking soda made something new?
  • A.It made a noise
  • B.The beaker felt full
  • C.Gas was given off and a new solid was left that does not undo
5.A color change appears when two clear liquids are mixed. What should you investigate next?
  • A.Which beaker is prettiest
  • B.Nothing, color proves nothing
  • C.Whether the change can be undone, to see if a new substance formed
6.Sand settles to the bottom of water and can be poured off unchanged. What kind of mixing is that?
  • A.A change that makes a new substance
  • B.Melting
  • C.Mixing that makes no new substance
7.Salt dissolves in water and comes back when the water dries. Was a new substance made?
  • A.No, the salt was there all along
  • B.Yes, because it disappeared
  • C.Yes, the water made salt

LessonPrint · 5-PS1-4 · Set 9 · free to copy for classroom use

Answer key — Did Mixing Make Something New?

Set 9. Prints on its own sheet.

  1. 1.1. Each pair was mixed in the same size beaker. 2. It fizzed, gas was given off and a new solid was left. 3. The vinegar and soda gave off gas and left a new solid, which cannot be undone. 4. A clear liquid formed, and the salt reappeared when dried.
  2. 2.A change has happened that may have made a new substance
  3. 3.The sugar has only dissolved, and it is still there
  4. 4.Gas was given off and a new solid was left that does not undo
  5. 5.Whether the change can be undone, to see if a new substance formed
  6. 6.Mixing that makes no new substance
  7. 7.No, the salt was there all along

Last reviewed 2026-09-05. Aligned to 5-PS1-4 of the Next Generation Science Standards.