Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 112 · 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: sugar does not dissolve in water. (a) False (b) True
2. 2.🧺 Which of these is not needed for growing salt crystals? (a) turmeric powder (b) salt (c) a spoon (d) a shallow dish
3. 3.🧂 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
4. 4.True or false: baking soda does not dissolve in water. (a) True (b) False
5. 5.🔍 Which is the odd one out? (a) sand (b) sawdust (c) food colour (d) cooking oil
6. 6.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to butter (b) it turns to oil (c) sugar crystals form (d) salt crystals form
7. 7.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) warm water (c) a mirror (d) salt
8. 8.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
9. 9.True or false: sawdust dissolves in water. (a) True (b) False
10. 10.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) next to the baby (c) safe from small children (d) on the edge of a table
11. 11.🧂 Which of these does not dissolve in water? (a) glucose powder (b) table salt (c) chalk powder (d) baking soda
12. 12.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) a mirror (c) a magnet (d) a piece of string
13. 13.🧂 Which of these dissolves in water? (a) sawdust (b) chalk powder (c) glucose powder (d) small pebbles
14. 14.🌊 How is salt made in salt pans by the sea? (a) salt rains down (b) fish make it (c) sand is ground up (d) sea water evaporates
15. 15.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
16. 16.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a balloon (b) salt (c) a shallow dish (d) warm water
17. 17.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a spoon (c) salt (d) turmeric powder
18. 18.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) a balloon (c) a shallow dish (d) yeast
19. 19.True or false: yeast is needed for growing salt crystals. (a) True (b) False
20. 20.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) a magnet (c) yeast (d) salt
21. 21.⚖️ 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
22. 22.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
23. 23.⚖️ 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) sunny or shady place (b) the same dish (c) days to see crystals (d) the kind of salt
24. 24.🧂 Which of these dissolves in water? (a) cooking oil (b) small pebbles (c) table salt (d) sawdust
25. 25.True or false: melting butter is a change that can be undone. (a) True (b) False
26. 26.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is what we measure. (a) False (b) True
27. 27.🧂 Which of these dissolves in water? (a) sawdust (b) small pebbles (c) baking soda (d) cooking oil
28. 28.⚖️ 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 keep it the same (b) we change it (c) we measure it
29. 29.🧂 Why do crystals appear as the dish dries? (a) water evaporates (b) salt grows roots (c) the dish melts (d) salt eats water
30. 30.True or false: folding paper is a change that cannot be undone. (a) True (b) False
31. 31.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it turns sweet (b) it fizzes (c) crystals grow faster (d) few or no crystals
32. 32.🧺 Which of these is needed for growing salt crystals? (a) a spoon (b) a balloon (c) turmeric powder (d) a mirror
33. 33.🧂 Which of these does not dissolve in water? (a) sugar (b) glucose powder (c) cooking oil (d) table salt
34. 34.🧂 Does glucose powder dissolve in water? (a) dissolves in water (b) does not dissolve
35. 35.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
36. 36.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) smaller crystals (b) no crystals (c) liquid crystals (d) bigger crystals
37. 37.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) warm water (c) turmeric powder (d) a magnet
38. 38.🧈 Can this change be undone: milk turning to curd? (a) cannot be undone (b) can be undone
39. 39.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a shallow dish (c) yeast (d) a piece of string
40. 40.⚖️ 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) True (b) False

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