Science worksheet · Mixtures and changes
Will It Dissolve?
An experiment: predict and test whether seven things dissolve in water.
- Grade level
- Grades 2–5
- Time
- About 25 minutes
- Topic
- Mixtures and changes
- Answer key
- Not needed: answers vary
- Kids practice
- Mixtures and solutions, Physical and chemical changes, Dissolving
What kids do
Printed on the sheet:
- Do it: fill seven clear cups with warm water. Stir one spoonful of a different thing into each cup for one minute, then look. If you cannot see it any more, it dissolved.
- I predict it will dissolve: yes or no
- Did it dissolve?
- Where did the things that dissolved go?
Words on this sheet
saltsugarsandpepperflourrice
Teacher tip
Use warm water and stir the same number of times for each test.
How to use it
- Stir salt, sand and sugar into clear cups of water before the sheet.
- Show a physical change (cutting paper) and a chemical one (a fizzing tablet).
- Let partners compare answers and settle any differences with a book or a video.
Watch for
Dissolved doesn’t mean gone. The salt is still in the water.
Talk about it
- Can this change be undone?
- What did you notice that surprised you?
Take it further
Make trail mix and talk about why it is a mixture.
US Letter, prints well in black and white. Free for home and classroom use: print as many copies as you need.
More mixtures and changes worksheets
Grades 3–5
Physical or Chemical Change?
Sort ten changes into physical changes and chemical changes, then explain one.
Grades 3–5
Separate a Mixture
Match five tools to how they separate a mix of sand, salt, rice and paper clips, then put the steps in order.
Grades 4–5
Chemistry Words
Match mixture, solution, dissolve, physical change, chemical change and evaporate to their meanings.
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