Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 953 · 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 spoon (b) yeast (c) a shallow dish (d) salt
2. 2.🧂 Which of these does not dissolve in water? (a) table salt (b) sugar (c) sawdust (d) glucose powder
3. 3.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) sunny or shady place (b) the kind of salt (c) days to see crystals (d) the amount of water
4. 4.⚖️ 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
5. 5.⚖️ 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
6. 6.🧈 Which of these is a change that can be undone? (a) freezing water (b) cooking an egg (c) baking a cake (d) browning lemon ink
7. 7.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) yeast (c) a piece of string (d) a mirror
8. 8.True or false: a spoon is not needed for growing salt crystals. (a) False (b) True
9. 9.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a spoon (c) a mirror (d) a balloon
10. 10.True or false: cooking an egg is a change that can be undone. (a) False (b) True
11. 11.True or false: browning lemon ink is a change that can be undone. (a) True (b) False
12. 12.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) yeast (c) warm water (d) turmeric powder
13. 13.⚖️ 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) days to see crystals (b) sunny or shady place (c) the amount of salt (d) the same dish
14. 14.🧂 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
15. 15.True or false: a battery cell is not needed for growing salt crystals. (a) True (b) False
16. 16.🔍 Which is the odd one out? (a) sand (b) sawdust (c) small pebbles (d) table salt
17. 17.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a battery cell (b) salt (c) a piece of string (d) warm water
18. 18.🧂 Which of these dissolves in water? (a) food colour (b) chalk powder (c) sand (d) small pebbles
19. 19.🧂 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
20. 20.True or false: sugar does not dissolve in water. (a) True (b) False
21. 21.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it turns sweet (b) it fizzes (c) few or no crystals (d) crystals grow faster
22. 22.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) sugar crystals form (b) it turns to oil (c) salt crystals form (d) it turns to butter
23. 23.🧂 Which of these dissolves in water? (a) chalk powder (b) sawdust (c) sugar (d) sand
24. 24.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a magnet (c) a piece of string (d) a spoon
25. 25.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
26. 26.True or false: melting butter is a change that can be undone. (a) True (b) False
27. 27.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a balloon (c) salt (d) a piece of string
28. 28.True or false: freezing water is a change that cannot be undone. (a) True (b) False
29. 29.True or false: small pebbles does not dissolve in water. (a) False (b) True
30. 30.🧈 Can this change be undone: folding paper? (a) can be undone (b) cannot be undone
31. 31.True or false: turmeric powder is needed for growing salt crystals. (a) True (b) False
32. 32.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) turmeric powder (c) a piece of string (d) a spoon
33. 33.True or false: folding paper is a change that cannot be undone. (a) False (b) True
34. 34.⚖️ 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
35. 35.True or false: sawdust dissolves in water. (a) True (b) False
36. 36.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a mirror (c) warm water (d) a spoon
37. 37.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a balloon (c) a shallow dish (d) a piece of string
38. 38.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) rusting iron (c) dissolving salt (d) folding paper
39. 39.🧈 Can this change be undone: cooking an egg? (a) can be undone (b) cannot be undone
40. 40.🔍 Which is the odd one out? (a) food colour (b) cooking oil (c) small pebbles (d) chalk powder

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