Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 182 · 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 battery cell (c) a piece of string (d) a shallow dish
2. 2.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is the one thing we change. (a) False (b) True
3. 3.⚖️ 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
4. 4.📘 What do we call a solution that cannot dissolve any more salt? (a) saturated (b) empty (c) magnetic (d) frozen
5. 5.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is the one thing we change. (a) True (b) False
6. 6.🔮 Predict: you cover the dish so no water can escape. What happens? (a) few or no crystals (b) crystals grow faster (c) it fizzes (d) it turns sweet
7. 7.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) turmeric powder (c) yeast (d) warm water
8. 8.⚖️ 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 same dish
9. 9.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) bigger crystals (b) liquid crystals (c) smaller crystals (d) no crystals
10. 10.True or false: salt is needed for growing salt crystals. (a) True (b) False
11. 11.🧺 Which of these is not needed for growing salt crystals? (a) yeast (b) warm water (c) salt (d) a spoon
12. 12.⚖️ 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
13. 13.⚖️ 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
14. 14.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
15. 15.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a balloon (c) salt (d) a shallow dish
16. 16.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) sugar crystals form (c) it turns to oil (d) it turns to butter
17. 17.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
18. 18.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a shallow dish (c) salt (d) yeast
19. 19.🧈 Can this change be undone: folding paper? (a) can be undone (b) cannot be undone
20. 20.True or false: a magnet 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) turmeric powder (b) a piece of string (c) warm water (d) salt
22. 22.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) browning lemon ink (c) cooking an egg (d) freezing water
23. 23.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a shallow dish (c) a spoon (d) a magnet
24. 24.🧈 Can this change be undone: browning lemon ink? (a) cannot be undone (b) can be undone
25. 25.🧂 Which of these dissolves in water? (a) small pebbles (b) sugar (c) cooking oil (d) chalk powder
26. 26.True or false: turmeric powder is needed for growing salt crystals. (a) True (b) False
27. 27.🧂 Which of these does not dissolve in water? (a) sugar (b) sawdust (c) baking soda (d) food colour
28. 28.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) warm water (c) a spoon (d) a battery cell
29. 29.True or false: warm water is not needed for growing salt crystals. (a) False (b) True
30. 30.True or false: a piece of string is not needed for growing salt crystals. (a) False (b) True
31. 31.🔍 Which is the odd one out? (a) sand (b) small pebbles (c) glucose powder (d) chalk powder
32. 32.🧺 Do we need yeast for growing salt crystals? (a) not needed (b) needed
33. 33.🛟 Where should you keep the crystal dish while it dries? (a) safe from small children (b) next to the baby (c) on the edge of a table (d) in a busy doorway
34. 34.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
35. 35.🔍 Which is the odd one out? (a) sand (b) sawdust (c) table salt (d) chalk powder
36. 36.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) a spoon (c) a magnet (d) salt
37. 37.🧂 Why do we stir in salt until no more will dissolve? (a) to make it fizz (b) to change its colour (c) to cool the water (d) to make it very salty
38. 38.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) melting ice (c) cooking an egg (d) folding paper
39. 39.🧂 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
40. 40.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a spoon (c) warm water (d) a mirror

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