Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 673 · 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.True or false: a piece of string is not needed for growing salt crystals. (a) True (b) False
2. 2.🧂 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
3. 3.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a magnet (c) a piece of string (d) warm water
4. 4.🧂 Why do crystals appear as the dish dries? (a) salt grows roots (b) the dish melts (c) salt eats water (d) water evaporates
5. 5.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) the kind of salt (b) days to see crystals (c) sunny or shady place
6. 6.🧂 Which of these does not dissolve in water? (a) small pebbles (b) baking soda (c) sugar (d) glucose powder
7. 7.🧈 Can this change be undone: browning lemon ink? (a) cannot be undone (b) can be undone
8. 8.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a spoon (c) yeast (d) a balloon
9. 9.🛟 Who should pour the warm water for the crystal experiment? (a) a grown-up (b) the youngest child (c) nobody needs to (d) a friend who is running
10. 10.True or false: a mirror is needed for growing salt crystals. (a) False (b) True
11. 11.True or false: folding paper is a change that cannot be undone. (a) True (b) False
12. 12.🧺 Which of these is needed for growing salt crystals? (a) a piece of string (b) yeast (c) a mirror (d) turmeric powder
13. 13.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
14. 14.🧺 Which of these is not needed for growing salt crystals? (a) a battery cell (b) a spoon (c) warm water (d) a piece of string
15. 15.True or false: a mirror is not needed for growing salt crystals. (a) True (b) False
16. 16.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is what we measure. (a) True (b) False
17. 17.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
18. 18.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) yeast (c) a shallow dish (d) warm water
19. 19.True or false: a battery cell is needed for growing salt crystals. (a) True (b) False
20. 20.🔍 Which is the odd one out? (a) cooking oil (b) small pebbles (c) chalk powder (d) sugar
21. 21.True or false: a battery cell is not needed for growing salt crystals. (a) False (b) True
22. 22.True or false: warm water is not needed for growing salt crystals. (a) False (b) True
23. 23.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the same dish”? (a) we measure it (b) we change it (c) we keep it the same
24. 24.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to butter (b) it turns to oil (c) salt crystals form (d) sugar crystals form
25. 25.🧺 Do we need a magnet for growing salt crystals? (a) needed (b) not needed
26. 26.🧂 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
27. 27.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) on the edge of a table (c) safe from small children (d) in a busy doorway
28. 28.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
29. 29.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) turmeric powder (c) a mirror (d) warm water
30. 30.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) baking a cake (c) dissolving salt (d) rusting iron
31. 31.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) salt (c) a shallow dish (d) a mirror
32. 32.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the amount of water”? (a) we measure it (b) we change it (c) we keep it the same
33. 33.⚖️ 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) days to see crystals (b) sunny or shady place (c) the amount of water (d) the amount of salt
34. 34.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) bigger crystals (c) smaller crystals (d) liquid crystals
35. 35.True or false: turmeric powder is not needed for growing salt crystals. (a) True (b) False
36. 36.True or false: milk turning to curd is a change that can be undone. (a) False (b) True
37. 37.🧺 Which of these is not needed for growing salt crystals? (a) a balloon (b) warm water (c) a spoon (d) a piece of string
38. 38.⚖️ 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
39. 39.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
40. 40.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone

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