Skip to content
LessonPrint

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.

Set 21 of 25 · the same problems every time you open this link.

Next set

One paper per student

12345678910111213141516171819202122232425

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 claim does this record support?
  2. 2. What was kept the same for each pair?
  3. 3. Which mixtures could be undone?
  4. 4. Why is the vinegar and soda result different from the salt and water one?
2.Sugar is stirred into tea and vanishes. A student says a new substance formed. What is wrong?
  • A.Sugar always makes new substances
  • B.Nothing is wrong
  • C.The sugar has only dissolved, and it is still there
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.A new substance has formed
  • B.Nothing has changed
  • C.The milk has frozen
5.Why mix each pair in the same size beaker?
  • A.Because bigger beakers make new substances
  • B.So the beakers stay clean
  • C.So the mixtures can be compared fairly
6.What is the best evidence that vinegar and baking soda made something new?
  • A.Gas was given off and a new solid was left that does not undo
  • B.The beaker felt full
  • C.It made a noise
7.Iron left wet turns into orange rust. Is the rust a new substance?
  • A.No, it is just dirty iron
  • B.Yes, it is different from the iron and cannot easily be turned back
  • C.No, it is paint

LessonPrint · 5-PS1-4 · Set 21 · free to copy for classroom use

Answer key — Did Mixing Make Something New?

Set 21. Prints on its own sheet.

  1. 1.1. Mixing some substances makes new substances and mixing others does not. 2. Each pair was mixed in the same size beaker. 3. Sand and water, and salt and water. 4. The vinegar and soda gave off gas and left a new solid, which cannot be undone.
  2. 2.The sugar has only dissolved, and it is still there
  3. 3.Whether the change can be undone, to see if a new substance formed
  4. 4.A new substance has formed
  5. 5.So the mixtures can be compared fairly
  6. 6.Gas was given off and a new solid was left that does not undo
  7. 7.Yes, it is different from the iron and cannot easily be turned back

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