Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 574 · 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.⚖️ 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 keep it the same (c) we change it
2. 2.🧺 Do we need yeast for growing salt crystals? (a) needed (b) not needed
3. 3.🧂 Which of these dissolves in water? (a) sand (b) cooking oil (c) glucose powder (d) chalk powder
4. 4.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone
5. 5.🧺 Do we need a spoon for growing salt crystals? (a) needed (b) not needed
6. 6.🛟 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
7. 7.⚖️ 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 amount of salt (b) the kind of salt (c) the same dish (d) sunny or shady place
8. 8.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) salt (c) a piece of string (d) a magnet
9. 9.🧂 Which of these dissolves in water? (a) table salt (b) cooking oil (c) sand (d) chalk powder
10. 10.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a spoon (c) a piece of string (d) yeast
11. 11.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) liquid crystals (b) smaller crystals (c) no crystals (d) bigger crystals
12. 12.🧈 Which of these is a change that can be undone? (a) baking a cake (b) rusting iron (c) dissolving salt (d) cooking an egg
13. 13.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is the one thing we change. (a) True (b) False
14. 14.True or false: table salt dissolves in water. (a) True (b) False
15. 15.🧈 Can this change be undone: rusting iron? (a) can be undone (b) cannot be undone
16. 16.🔍 Which is the odd one out? (a) sugar (b) baking soda (c) glucose powder (d) sawdust
17. 17.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a spoon (c) a balloon (d) salt
18. 18.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
19. 19.⚖️ 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 amount of water
20. 20.🧺 Do we need a mirror for growing salt crystals? (a) not needed (b) needed
21. 21.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is kept the same. (a) False (b) True
22. 22.True or false: a battery cell is needed for growing salt crystals. (a) True (b) False
23. 23.⚖️ 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
24. 24.True or false: a mirror is not needed for growing salt crystals. (a) True (b) False
25. 25.⚖️ 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) False (b) True
26. 26.🧺 Which of these is not needed for growing salt crystals? (a) a balloon (b) a spoon (c) a shallow dish (d) a piece of string
27. 27.🔮 Predict: you cover the dish so no water can escape. What happens? (a) crystals grow faster (b) few or no crystals (c) it turns sweet (d) it fizzes
28. 28.🧂 Which of these does not dissolve in water? (a) sugar (b) small pebbles (c) food colour (d) baking soda
29. 29.True or false: baking soda dissolves in water. (a) True (b) False
30. 30.True or false: food colour does not dissolve in water. (a) True (b) False
31. 31.🧂 Which of these does not dissolve in water? (a) food colour (b) sand (c) table salt (d) sugar
32. 32.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a balloon (c) yeast (d) a piece of string
33. 33.🧺 Which of these is needed for growing salt crystals? (a) warm water (b) turmeric powder (c) a magnet (d) a battery cell
34. 34.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
35. 35.True or false: a balloon is not needed for growing salt crystals. (a) True (b) False
36. 36.🔍 Which is the odd one out? (a) sand (b) small pebbles (c) cooking oil (d) table salt
37. 37.🧂 Why do crystals appear as the dish dries? (a) water evaporates (b) salt eats water (c) the dish melts (d) salt grows roots
38. 38.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) baking a cake (c) freezing water (d) browning lemon ink
39. 39.True or false: baking a cake is a change that can be undone. (a) True (b) False
40. 40.🔍 Which is the odd one out? (a) table salt (b) small pebbles (c) sugar (d) glucose powder

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