Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 276 · 40 questions

What you do (Dry out, crystals in): 1. An adult pours warm water into a cup. 2. Stir in salt, a spoon at a time, until no more dissolves. 3. Pour the salty water into a shallow dish and lay a string in it. 4. Leave it on a sunny windowsill, out of reach of small children, and check each day.

1. 1.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the amount of salt”? (a) we keep it the same (b) we change it (c) we measure it
2. 2.True or false: turmeric powder is needed for growing salt crystals. (a) True (b) False
3. 3.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a battery cell (c) a shallow dish (d) a mirror
4. 4.True or false: small pebbles dissolves in water. (a) False (b) True
5. 5.🧂 Which of these does not dissolve in water? (a) cooking oil (b) sugar (c) baking soda (d) food colour
6. 6.🧺 Which of these is not needed for growing salt crystals? (a) turmeric powder (b) warm water (c) a spoon (d) salt
7. 7.True or false: baking a cake is a change that can be undone. (a) False (b) True
8. 8.🧂 Which of these does not dissolve in water? (a) sugar (b) baking soda (c) food colour (d) chalk powder
9. 9.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) it turns to oil (c) sugar crystals form (d) it turns to butter
10. 10.🧂 Which of these dissolves in water? (a) sand (b) food colour (c) cooking oil (d) chalk powder
11. 11.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) sunny or shady place (b) the amount of salt (c) days to see crystals (d) the amount of water
12. 12.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is what we measure. (a) False (b) True
13. 13.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) next to the baby (c) safe from small children (d) on the edge of a table
14. 14.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the kind of salt”? (a) we change it (b) we keep it the same (c) we measure it
15. 15.🧂 Which of these dissolves in water? (a) table salt (b) small pebbles (c) sawdust (d) sand
16. 16.🧈 Can this change be undone: cooking an egg? (a) cannot be undone (b) can be undone
17. 17.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) the youngest child (c) a friend who is running (d) a grown-up
18. 18.🔮 Predict: you cover the dish so no water can escape. What happens? (a) few or no crystals (b) it fizzes (c) crystals grow faster (d) it turns sweet
19. 19.True or false: rusting iron is a change that can be undone. (a) False (b) True
20. 20.True or false: melting butter is a change that can be undone. (a) True (b) False
21. 21.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) bigger crystals (c) smaller crystals (d) liquid crystals
22. 22.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
23. 23.True or false: chalk powder does not dissolve in water. (a) False (b) True
24. 24.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “days to see crystals”? (a) we change it (b) we keep it the same (c) we measure it
25. 25.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) dissolving salt (c) freezing water (d) rusting iron
26. 26.🧈 Which of these is a change that can be undone? (a) rusting iron (b) melting butter (c) cooking an egg (d) milk turning to curd
27. 27.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is the one thing we change. (a) True (b) False
28. 28.🔍 Which is the odd one out? (a) chalk powder (b) sand (c) cooking oil (d) sugar
29. 29.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a mirror (b) salt (c) a spoon (d) a shallow dish
30. 30.🧈 Which of these is a change that can be undone? (a) melting ice (b) milk turning to curd (c) browning lemon ink (d) cooking an egg
31. 31.🔍 Which is the odd one out? (a) glucose powder (b) table salt (c) sugar (d) cooking oil
32. 32.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is kept the same. (a) False (b) True
33. 33.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) yeast (c) a spoon (d) a mirror
34. 34.🧂 Which of these does not dissolve in water? (a) baking soda (b) food colour (c) glucose powder (d) sawdust
35. 35.🧂 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
36. 36.True or false: baking soda does not dissolve in water. (a) True (b) False
37. 37.🧺 Which of these is not needed for growing salt crystals? (a) a battery cell (b) a shallow dish (c) a spoon (d) salt
38. 38.True or false: warm water is not needed for growing salt crystals. (a) True (b) False
39. 39.🧺 Do we need a mirror for growing salt crystals? (a) not needed (b) needed
40. 40.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “sunny or shady place”? (a) we measure it (b) we change it (c) we keep it the same

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