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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 when vinegar and soda were mixed?
  2. 2. What claim does this record support?
  3. 3. What would you look for to tell a new substance had formed?
  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.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
4.Milk and lemon juice form lumps that will not mix back in. What does that suggest?
  • A.The milk has frozen
  • B.A new substance has formed
  • C.Nothing has changed
5.What is the best evidence that vinegar and baking soda made something new?
  • A.The beaker felt full
  • B.It made a noise
  • C.Gas was given off and a new solid was left that does not undo
6.Iron left wet turns into orange rust. Is the rust a new substance?
  • A.Yes, it is different from the iron and cannot easily be turned back
  • B.No, it is just dirty iron
  • C.No, it is paint
7.Which of these is a sign that mixing has made a new substance?
  • A.The mixture is stirred
  • B.The beaker is clear
  • C.Bubbles of gas appear that were not there before

LessonPrint · 5-PS1-4 · Set 6 · free to copy for classroom use

Answer key — Did Mixing Make Something New?

Set 6. Prints on its own sheet.

  1. 1.1. It fizzed, gas was given off and a new solid was left. 2. Mixing some substances makes new substances and mixing others does not. 3. Gas given off, or a solid left that does not undo. 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.Whether the change can be undone, to see if a new substance formed
  4. 4.A new substance has formed
  5. 5.Gas was given off and a new solid was left that does not undo
  6. 6.Yes, it is different from the iron and cannot easily be turned back
  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.