Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 895 · 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 small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
2. 2.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a mirror (c) salt (d) yeast
3. 3.⚖️ 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) False (b) True
4. 4.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) sugar crystals form (b) salt crystals form (c) it turns to oil (d) it turns to butter
5. 5.🧺 Do we need a spoon for growing salt crystals? (a) not needed (b) needed
6. 6.🔮 Predict: you cover the dish so no water can escape. What happens? (a) crystals grow faster (b) it turns sweet (c) it fizzes (d) few or no crystals
7. 7.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a magnet (b) a spoon (c) a shallow dish (d) warm water
8. 8.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) milk turning to curd (c) melting ice (d) dissolving salt
9. 9.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is kept the same. (a) False (b) True
10. 10.🧂 Which of these does not dissolve in water? (a) baking soda (b) glucose powder (c) cooking oil (d) food colour
11. 11.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) on the edge of a table (c) in a busy doorway (d) safe from small children
12. 12.⚖️ 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 amount of salt (b) days to see crystals (c) sunny or shady place
13. 13.🛟 Who should pour the warm water for the crystal experiment? (a) a friend who is running (b) nobody needs to (c) a grown-up (d) the youngest child
14. 14.True or false: sand dissolves in water. (a) True (b) False
15. 15.🧂 Which of these does not dissolve in water? (a) baking soda (b) sugar (c) table salt (d) small pebbles
16. 16.⚖️ 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 keep it the same (b) we measure it (c) we change it
17. 17.🧈 Can this change be undone: cooking an egg? (a) can be undone (b) cannot be undone
18. 18.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a spoon (c) yeast (d) a piece of string
19. 19.True or false: sawdust does not dissolve in water. (a) True (b) False
20. 20.🧈 Can this change be undone: folding paper? (a) cannot be undone (b) can be undone
21. 21.🧂 Why do crystals appear as the dish dries? (a) salt grows roots (b) the dish melts (c) water evaporates (d) salt eats water
22. 22.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) warm water (c) turmeric powder (d) a shallow dish
23. 23.True or false: a spoon is needed for growing salt crystals. (a) False (b) True
24. 24.🧺 Do we need a battery cell for growing salt crystals? (a) not needed (b) needed
25. 25.True or false: melting ice is a change that cannot be undone. (a) True (b) False
26. 26.True or false: milk turning to curd is a change that cannot be undone. (a) True (b) False
27. 27.⚖️ 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 measure it (b) we change it (c) we keep it the same
28. 28.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a piece of string (c) a balloon (d) a shallow dish
29. 29.📘 What do we call a solution that cannot dissolve any more salt? (a) empty (b) frozen (c) magnetic (d) saturated
30. 30.⚖️ 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
31. 31.🧈 Which of these is a change that cannot be undone? (a) browning lemon ink (b) dissolving salt (c) melting butter (d) folding paper
32. 32.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) baking a cake (c) freezing water (d) melting ice
33. 33.🧈 Can this change be undone: melting ice? (a) can be undone (b) cannot be undone
34. 34.⚖️ 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 kind of salt (b) the amount of water (c) sunny or shady place (d) days to see crystals
35. 35.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
36. 36.True or false: warm water is not needed for growing salt crystals. (a) True (b) False
37. 37.True or false: baking a cake is a change that cannot be undone. (a) False (b) True
38. 38.🔍 Which is the odd one out? (a) sawdust (b) baking soda (c) small pebbles (d) sand
39. 39.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
40. 40.🧂 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water

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