Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 340 · 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.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a magnet (b) salt (c) a piece of string (d) a shallow dish
2. 2.True or false: melting ice is a change that can be undone. (a) False (b) True
3. 3.True or false: table salt does not dissolve in water. (a) False (b) True
4. 4.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
5. 5.⚖️ 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 change it (b) we keep it the same (c) we measure it
6. 6.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is kept the same. (a) False (b) True
7. 7.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
8. 8.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) a grown-up (c) a friend who is running (d) nobody needs to
9. 9.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
10. 10.True or false: sugar dissolves in water. (a) True (b) False
11. 11.⚖️ 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) the amount of water (c) days to see crystals
12. 12.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) salt (c) warm water (d) a magnet
13. 13.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
14. 14.🔮 Predict: you cover the dish so no water can escape. What happens? (a) crystals grow faster (b) it fizzes (c) it turns sweet (d) few or no crystals
15. 15.🔍 Which is the odd one out? (a) sand (b) cooking oil (c) sawdust (d) glucose powder
16. 16.True or false: a mirror is not needed for growing salt crystals. (a) False (b) True
17. 17.🧂 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
18. 18.🧺 Do we need a magnet for growing salt crystals? (a) needed (b) not needed
19. 19.⚖️ 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 change it (b) we measure it (c) we keep it the same
20. 20.🧂 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
21. 21.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny spheres (b) tiny stars (c) tiny cubes (d) tiny triangles
22. 22.True or false: sand dissolves in water. (a) True (b) False
23. 23.⚖️ 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
24. 24.⚖️ 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) days to see crystals (d) the same dish
25. 25.True or false: a battery cell is needed for growing salt crystals. (a) False (b) True
26. 26.🧺 Do we need a battery cell for growing salt crystals? (a) not needed (b) needed
27. 27.🧺 Do we need a piece of string for growing salt crystals? (a) needed (b) not needed
28. 28.🔍 Which is the odd one out? (a) cooking oil (b) baking soda (c) sugar (d) food colour
29. 29.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) it turns to butter (c) sugar crystals form (d) it turns to oil
30. 30.📘 What do we call a solution that cannot dissolve any more salt? (a) empty (b) magnetic (c) saturated (d) frozen
31. 31.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) smaller crystals (c) liquid crystals (d) bigger crystals
32. 32.🧂 Which of these does not dissolve in water? (a) sand (b) glucose powder (c) baking soda (d) sugar
33. 33.🧺 Which of these is not needed for growing salt crystals? (a) a balloon (b) a shallow dish (c) a spoon (d) a piece of string
34. 34.🔍 Which is the odd one out? (a) baking soda (b) sand (c) small pebbles (d) cooking oil
35. 35.🧈 Can this change be undone: freezing water? (a) cannot be undone (b) can be undone
36. 36.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) dissolving salt (c) freezing water (d) browning lemon ink
37. 37.🧺 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 battery cell
38. 38.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) melting ice (c) melting butter (d) baking a cake
39. 39.⚖️ 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) True (b) False
40. 40.🧂 Which of these dissolves in water? (a) small pebbles (b) sugar (c) chalk powder (d) cooking oil

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