Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 683 · 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) warm water (b) a magnet (c) a shallow dish (d) a piece of string
2. 2.True or false: salt is needed for growing salt crystals. (a) True (b) False
3. 3.🧺 Do we need a battery cell for growing salt crystals? (a) needed (b) not needed
4. 4.🧂 Which of these dissolves in water? (a) cooking oil (b) small pebbles (c) food colour (d) chalk powder
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 measure it (c) we keep it the same
6. 6.🧂 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
7. 7.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a battery cell (c) salt (d) warm water
8. 8.⚖️ 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 keep it the same (c) we measure it
9. 9.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a piece of string (c) salt (d) turmeric powder
10. 10.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) liquid crystals (b) smaller crystals (c) bigger crystals (d) no crystals
11. 11.🧺 Which of these is needed for growing salt crystals? (a) a piece of string (b) a battery cell (c) turmeric powder (d) yeast
12. 12.True or false: table salt does not dissolve in water. (a) False (b) True
13. 13.True or false: small pebbles dissolves in water. (a) True (b) False
14. 14.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) a spoon (c) a mirror (d) a magnet
15. 15.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) salt (c) a piece of string (d) yeast
16. 16.🧂 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
17. 17.🧂 Why do crystals appear as the dish dries? (a) the dish melts (b) salt grows roots (c) salt eats water (d) water evaporates
18. 18.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
19. 19.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
20. 20.True or false: a mirror is needed for growing salt crystals. (a) True (b) False
21. 21.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a piece of string (c) a balloon (d) salt
22. 22.True or false: a shallow dish is not needed for growing salt crystals. (a) False (b) True
23. 23.True or false: baking soda does not dissolve in water. (a) False (b) True
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 salt (b) the amount of water (c) sunny or shady place (d) days to see crystals
25. 25.🧈 Can this change be undone: folding paper? (a) cannot be undone (b) can be undone
26. 26.⚖️ 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 kind of salt
27. 27.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a mirror (b) salt (c) warm water (d) a spoon
28. 28.⚖️ 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
29. 29.🧈 Can this change be undone: milk turning to curd? (a) cannot be undone (b) can be undone
30. 30.🧈 Can this change be undone: browning lemon ink? (a) can be undone (b) cannot be undone
31. 31.🔍 Which is the odd one out? (a) sawdust (b) chalk powder (c) cooking oil (d) food colour
32. 32.🔮 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
33. 33.True or false: browning lemon ink is a change that cannot be undone. (a) True (b) False
34. 34.🧂 Which of these does not dissolve in water? (a) glucose powder (b) chalk powder (c) sugar (d) table salt
35. 35.🧂 Which of these does not dissolve in water? (a) baking soda (b) table salt (c) food colour (d) sand
36. 36.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it turns sweet (b) crystals grow faster (c) it fizzes (d) few or no crystals
37. 37.True or false: chalk powder dissolves in water. (a) True (b) False
38. 38.🧈 Which of these is a change that can be undone? (a) melting butter (b) rusting iron (c) baking a cake (d) cooking an egg
39. 39.🧂 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
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 what we measure. (a) True (b) False

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