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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 was kept the same for each pair?
  3. 3. What claim does this record support?
  4. 4. Why is the vinegar and soda result different from the salt and water one?
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.A change that makes a new substance
  • C.Melting
3.Why mix each pair in the same size beaker?
  • A.Because bigger beakers make new substances
  • B.So the mixtures can be compared fairly
  • C.So the beakers stay clean
4.Which of these is a sign that mixing has made a new substance?
  • A.Bubbles of gas appear that were not there before
  • B.The beaker is clear
  • C.The mixture is stirred
5.Milk and lemon juice form lumps that will not mix back in. What does that suggest?
  • A.A new substance has formed
  • B.Nothing has changed
  • C.The milk has frozen
6.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
7.Salt dissolves in water and comes back when the water dries. Was a new substance made?
  • A.Yes, the water made salt
  • B.No, the salt was there all along
  • C.Yes, because it disappeared

LessonPrint · 5-PS1-4 · Set 25 · free to copy for classroom use

Answer key — Did Mixing Make Something New?

Set 25. Prints on its own sheet.

  1. 1.1. Sand and water, and salt and water. 2. Each pair was mixed in the same size beaker. 3. Mixing some substances makes new substances and mixing others does not. 4. The vinegar and soda gave off gas and left a new solid, which cannot be undone.
  2. 2.Mixing that makes no new substance
  3. 3.So the mixtures can be compared fairly
  4. 4.Bubbles of gas appear that were not there before
  5. 5.A new substance has formed
  6. 6.Whether the change can be undone, to see if a new substance formed
  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.