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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. What happened to the salt and water?
  2. 2. What was kept the same for each pair?
  3. 3. What would you look for to tell a new substance had formed?
  4. 4. What claim does this record support?
2.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 mixture is stirred
  • C.The beaker is clear
3.Salt dissolves in water and comes back when the water dries. Was a new substance made?
  • A.Yes, because it disappeared
  • B.No, the salt was there all along
  • C.Yes, the water made salt
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.Nothing is wrong
  • C.Sugar always makes new substances
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.Nothing, color proves nothing
  • B.Whether the change can be undone, to see if a new substance formed
  • C.Which beaker is prettiest
7.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

LessonPrint · 5-PS1-4 · Set 24 · free to copy for classroom use

Answer key — Did Mixing Make Something New?

Set 24. 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. Gas given off, or a solid left that does not undo. 4. Mixing some substances makes new substances and mixing others does not.
  2. 2.Bubbles of gas appear that were not there before
  3. 3.No, the salt was there all along
  4. 4.The sugar has only dissolved, and it is still there
  5. 5.A new substance has formed
  6. 6.Whether the change can be undone, to see if a new substance formed
  7. 7.Mixing that makes no new substance

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