Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 65 · 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.🧂 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
2. 2.🧈 Which of these is a change that cannot be undone? (a) browning lemon ink (b) dissolving salt (c) freezing water (d) folding paper
3. 3.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) crystals grow faster (c) few or no crystals (d) it turns sweet
4. 4.🧈 Which of these is a change that can be undone? (a) melting ice (b) rusting iron (c) cooking an egg (d) browning lemon ink
5. 5.⚖️ 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 measure it (b) we change it (c) we keep it the same
6. 6.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) turmeric powder (c) salt (d) a balloon
7. 7.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) bigger crystals (b) smaller crystals (c) no crystals (d) liquid crystals
8. 8.⚖️ 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) days to see crystals (c) the amount of salt (d) the same dish
9. 9.⚖️ 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 measure it (c) we change it
10. 10.True or false: a piece of string is not needed for growing salt crystals. (a) True (b) False
11. 11.True or false: folding paper is a change that can be undone. (a) False (b) True
12. 12.🧺 Do we need a spoon for growing salt crystals? (a) not needed (b) needed
13. 13.True or false: small pebbles does not dissolve in water. (a) True (b) False
14. 14.True or false: cooking an egg is a change that can be undone. (a) True (b) False
15. 15.🛟 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
16. 16.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a piece of string (c) warm water (d) a magnet
17. 17.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) it turns to oil (c) it turns to butter (d) sugar crystals form
18. 18.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is the one thing we change? (a) the same dish (b) sunny or shady place (c) the kind of salt (d) days to see crystals
19. 19.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
20. 20.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a shallow dish (c) a spoon (d) a battery cell
21. 21.🧂 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
22. 22.True or false: table salt does not dissolve in water. (a) False (b) True
23. 23.🧂 Why do we stir in salt until no more will dissolve? (a) to cool the water (b) to make it fizz (c) to change its colour (d) to make it very salty
24. 24.⚖️ 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
25. 25.True or false: melting ice is a change that cannot be undone. (a) False (b) True
26. 26.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) safe from small children (c) on the edge of a table (d) next to the baby
27. 27.True or false: melting butter is a change that can be undone. (a) True (b) False
28. 28.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is what we measure. (a) True (b) False
29. 29.🧂 Why do crystals appear as the dish dries? (a) water evaporates (b) salt grows roots (c) salt eats water (d) the dish melts
30. 30.🧂 Which of these dissolves in water? (a) sand (b) chalk powder (c) sawdust (d) table salt
31. 31.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a magnet (c) warm water (d) yeast
32. 32.🧂 Which of these dissolves in water? (a) sand (b) small pebbles (c) chalk powder (d) glucose powder
33. 33.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) sunny or shady place (b) days to see crystals (c) the amount of water
34. 34.🧂 Which of these does not dissolve in water? (a) baking soda (b) table salt (c) sugar (d) chalk powder
35. 35.True or false: salt is not needed for growing salt crystals. (a) True (b) False
36. 36.🔍 Which is the odd one out? (a) sand (b) food colour (c) table salt (d) sugar
37. 37.True or false: dissolving salt is a change that can be undone. (a) False (b) True
38. 38.🧈 Which of these is a change that cannot be undone? (a) rusting iron (b) melting ice (c) folding paper (d) freezing water
39. 39.🧂 Does glucose powder dissolve in water? (a) dissolves in water (b) does not dissolve
40. 40.🧂 Does chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water

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