Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 547 · 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: melting butter is a change that cannot be undone. (a) False (b) True
2. 2.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) sugar crystals form (b) it turns to oil (c) it turns to butter (d) salt crystals form
3. 3.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a balloon (c) a spoon (d) turmeric powder
4. 4.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is the one thing we change. (a) True (b) False
5. 5.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) the amount of water (b) the kind of salt (c) sunny or shady place (d) days to see crystals
6. 6.🧈 Can this change be undone: browning lemon ink? (a) can be undone (b) cannot be undone
7. 7.📘 What do we call a solution that cannot dissolve any more salt? (a) saturated (b) frozen (c) magnetic (d) empty
8. 8.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
9. 9.🧈 Can this change be undone: cooking an egg? (a) cannot be undone (b) can be undone
10. 10.🧈 Which of these is a change that can be undone? (a) baking a cake (b) cooking an egg (c) rusting iron (d) freezing water
11. 11.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) melting ice (c) cooking an egg (d) folding paper
12. 12.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a mirror (c) a shallow dish (d) a spoon
13. 13.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a balloon (b) a spoon (c) salt (d) warm water
14. 14.True or false: a spoon is needed for growing salt crystals. (a) True (b) False
15. 15.🧈 Can this change be undone: melting butter? (a) can be undone (b) cannot be undone
16. 16.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
17. 17.🧂 Why do we stir in salt until no more will dissolve? (a) to cool the water (b) to change its colour (c) to make it very salty (d) to make it fizz
18. 18.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) in a busy doorway (c) on the edge of a table (d) safe from small children
19. 19.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) turmeric powder (b) salt (c) warm water (d) a piece of string
20. 20.🔍 Which is the odd one out? (a) food colour (b) chalk powder (c) glucose powder (d) table salt
21. 21.⚖️ 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) True (b) False
22. 22.⚖️ 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 measure it (b) we keep it the same (c) we change it
23. 23.🧂 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
24. 24.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
25. 25.⚖️ 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 change it (b) we measure it (c) we keep it the same
26. 26.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a spoon (c) a battery cell (d) a shallow dish
27. 27.True or false: melting butter is a change that can be undone. (a) False (b) True
28. 28.🧂 Does glucose powder dissolve in water? (a) dissolves in water (b) does not dissolve
29. 29.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) smaller crystals (c) bigger crystals (d) liquid crystals
30. 30.🧂 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
31. 31.⚖️ 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
32. 32.🧂 Which of these does not dissolve in water? (a) glucose powder (b) food colour (c) sugar (d) chalk powder
33. 33.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) yeast (c) salt (d) a magnet
34. 34.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is kept the same. (a) True (b) False
35. 35.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) yeast (c) warm water (d) a spoon
36. 36.True or false: glucose powder does not dissolve in water. (a) False (b) True
37. 37.🧺 Do we need a spoon for growing salt crystals? (a) needed (b) not needed
38. 38.🧂 Which of these does not dissolve in water? (a) glucose powder (b) table salt (c) baking soda (d) small pebbles
39. 39.True or false: a spoon is not needed for growing salt crystals. (a) True (b) False
40. 40.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed

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