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 10 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 happened to the salt and water?
  3. 3. Why is the vinegar and soda result different from the salt and water one?
  4. 4. Which mixtures could be undone?
2.What is the best evidence that vinegar and baking soda made something new?
  • A.It made a noise
  • B.Gas was given off and a new solid was left that does not undo
  • C.The beaker felt full
3.Milk and lemon juice form lumps that will not mix back in. What does that suggest?
  • A.Nothing has changed
  • B.The milk has frozen
  • C.A new substance has formed
4.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
5.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 paint
  • C.No, it is just dirty iron
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.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

LessonPrint · 5-PS1-4 · Set 10 · free to copy for classroom use

Answer key — Did Mixing Make Something New?

Set 10. Prints on its own sheet.

  1. 1.1. Mixing some substances makes new substances and mixing others does not. 2. A clear liquid formed, and the salt reappeared when dried. 3. The vinegar and soda gave off gas and left a new solid, which cannot be undone. 4. Sand and water, and salt and water.
  2. 2.Gas was given off and a new solid was left that does not undo
  3. 3.A new substance has formed
  4. 4.No, the salt was there all along
  5. 5.Yes, it is different from the iron and cannot easily be turned back
  6. 6.A change has happened that may have made a new substance
  7. 7.So the mixtures can be compared fairly

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