Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 834 · 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.🌊 How is salt made in salt pans by the sea? (a) sea water evaporates (b) salt rains down (c) sand is ground up (d) fish make it
2. 2.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) turmeric powder (b) a spoon (c) a piece of string (d) a shallow dish
3. 3.🧺 Do we need yeast for growing salt crystals? (a) needed (b) not needed
4. 4.⚖️ 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 keep it the same (c) we change it
5. 5.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) melting butter (c) cooking an egg (d) freezing water
6. 6.🧺 Which of these is not needed for growing salt crystals? (a) a balloon (b) warm water (c) salt (d) a spoon
7. 7.🧂 Which of these does not dissolve in water? (a) food colour (b) baking soda (c) sugar (d) cooking oil
8. 8.🧈 Can this change be undone: cooking an egg? (a) cannot be undone (b) can be undone
9. 9.🧺 Do we need a spoon for growing salt crystals? (a) not needed (b) needed
10. 10.🛟 Who should pour the warm water for the crystal experiment? (a) a friend who is running (b) the youngest child (c) nobody needs to (d) a grown-up
11. 11.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is the one thing we change. (a) True (b) False
12. 12.🧂 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
13. 13.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
14. 14.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) yeast (b) salt (c) a spoon (d) warm water
15. 15.True or false: sand does not dissolve in water. (a) False (b) True
16. 16.🧺 Do we need turmeric powder for growing salt crystals? (a) needed (b) not needed
17. 17.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a spoon (c) a shallow dish (d) yeast
18. 18.⚖️ 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
19. 19.⚖️ 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) False (b) True
20. 20.🧂 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
21. 21.🧈 Which of these is a change that cannot be undone? (a) browning lemon ink (b) dissolving salt (c) freezing water (d) folding paper
22. 22.True or false: melting butter is a change that can be undone. (a) False (b) True
23. 23.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) in a busy doorway (c) safe from small children (d) next to the baby
24. 24.⚖️ 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 keep it the same (c) we measure it
25. 25.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is the one thing we change. (a) True (b) False
26. 26.⚖️ 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
27. 27.🧂 Which of these does not dissolve in water? (a) baking soda (b) food colour (c) chalk powder (d) table salt
28. 28.⚖️ 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 keep it the same (c) we change it
29. 29.True or false: a shallow dish is not needed for growing salt crystals. (a) False (b) True
30. 30.🧺 Which of these is not needed for growing salt crystals? (a) a magnet (b) warm water (c) salt (d) a spoon
31. 31.🔍 Which is the odd one out? (a) baking soda (b) sugar (c) sawdust (d) food colour
32. 32.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) a balloon (c) a magnet (d) a piece of string
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) days to see crystals (b) sunny or shady place (c) the same dish
34. 34.🔍 Which is the odd one out? (a) baking soda (b) glucose powder (c) small pebbles (d) sugar
35. 35.True or false: a spoon is needed for growing salt crystals. (a) False (b) True
36. 36.🧂 Which of these dissolves in water? (a) food colour (b) chalk powder (c) sawdust (d) sand
37. 37.🔍 Which is the odd one out? (a) cooking oil (b) sugar (c) glucose powder (d) baking soda
38. 38.📘 What do we call a solution that cannot dissolve any more salt? (a) magnetic (b) saturated (c) empty (d) frozen
39. 39.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) liquid crystals (c) smaller crystals (d) bigger crystals
40. 40.🔮 Predict: you cover the dish so no water can escape. What happens? (a) few or no crystals (b) crystals grow faster (c) it fizzes (d) it turns sweet

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