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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.

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Set 1 has all 25 in a single PDF. All 25 sets ask different questions.

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 happened to the salt and water?
  2. 2. What was kept the same for each pair?
  3. 3. What claim does this record support?
  4. 4. Which mixtures could be undone?
2.Sand settles to the bottom of water and can be poured off unchanged. What kind of mixing is that?
  • A.Mixing that makes no new substance
  • B.Melting
  • C.A change that makes a new substance
3.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, the water made salt
  • C.Yes, because it disappeared
4.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
5.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 room is warm
  • C.The beaker is broken
6.Milk and lemon juice form lumps that will not mix back in. What does that suggest?
  • A.A new substance has formed
  • B.The milk has frozen
  • C.Nothing has changed
7.A color change appears when two clear liquids are mixed. What should you investigate next?
  • A.Which beaker is prettiest
  • B.Whether the change can be undone, to see if a new substance formed
  • C.Nothing, color proves nothing

LessonPrint · 5-PS1-4 · Set 8 · free to copy for classroom use

Answer key — Did Mixing Make Something New?

Set 8. Prints on its own sheet.

  1. 1.1. A clear liquid formed, and the salt reappeared when dried. 2. Each pair was mixed in the same size beaker. 3. Mixing some substances makes new substances and mixing others does not. 4. Sand and water, and salt and water.
  2. 2.Mixing that makes no new substance
  3. 3.No, the salt was there all along
  4. 4.The sugar has only dissolved, and it is still there
  5. 5.A change has happened that may have made a new substance
  6. 6.A new substance has formed
  7. 7.Whether the change can be undone, to see if a new substance formed

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