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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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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. Which mixtures could be undone?
  2. 2. What claim does this record support?
  3. 3. What happened when vinegar and soda were mixed?
  4. 4. Why is the vinegar and soda result different from the salt and water one?
2.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
3.Why mix each pair in the same size beaker?
  • A.So the mixtures can be compared fairly
  • B.So the beakers stay clean
  • C.Because bigger beakers make new substances
4.Sand settles to the bottom of water and can be poured off unchanged. What kind of mixing is that?
  • A.Melting
  • B.A change that makes a new substance
  • C.Mixing that makes no new substance
5.Milk and lemon juice form lumps that will not mix back in. What does that suggest?
  • A.The milk has frozen
  • B.Nothing has changed
  • C.A new substance has formed
6.A mixture gets warm by itself when two liquids are poured together. What might that show?
  • A.The room is warm
  • B.A change has happened that may have made a new substance
  • C.The beaker is broken
7.Which of these is a sign that mixing has made a new substance?
  • A.The beaker is clear
  • B.Bubbles of gas appear that were not there before
  • C.The mixture is stirred

LessonPrint · 5-PS1-4 · Set 16 · free to copy for classroom use

Answer key — Did Mixing Make Something New?

Set 16. Prints on its own sheet.

  1. 1.1. Sand and water, and salt and water. 2. Mixing some substances makes new substances and mixing others does not. 3. It fizzed, gas was given off and a new solid was left. 4. The vinegar and soda gave off gas and left a new solid, which cannot be undone.
  2. 2.Whether the change can be undone, to see if a new substance formed
  3. 3.So the mixtures can be compared fairly
  4. 4.Mixing that makes no new substance
  5. 5.A new substance has formed
  6. 6.A change has happened that may have made a new substance
  7. 7.Bubbles of gas appear that were not there before

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