Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 659 · 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: a magnet is needed for growing salt crystals. (a) False (b) True
2. 2.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
3. 3.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) yeast (c) warm water (d) a shallow dish
4. 4.🔍 Which is the odd one out? (a) sugar (b) sand (c) table salt (d) food colour
5. 5.🧺 Do we need a balloon for growing salt crystals? (a) needed (b) not needed
6. 6.True or false: a piece of string is not needed for growing salt crystals. (a) False (b) True
7. 7.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the kind of salt”? (a) we measure it (b) we keep it the same (c) we change it
8. 8.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to butter (b) it turns to oil (c) salt crystals form (d) sugar crystals form
9. 9.🧺 Do we need warm water for growing salt crystals? (a) needed (b) not needed
10. 10.🔮 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
11. 11.⚖️ 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
12. 12.🧂 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
13. 13.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) turmeric powder (c) a battery cell (d) warm water
14. 14.🧂 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
15. 15.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is what we measure. (a) False (b) True
16. 16.🔍 Which is the odd one out? (a) small pebbles (b) glucose powder (c) sand (d) chalk powder
17. 17.True or false: turmeric powder is not needed for growing salt crystals. (a) True (b) False
18. 18.🧂 Which of these does not dissolve in water? (a) sugar (b) baking soda (c) table salt (d) sawdust
19. 19.True or false: a battery cell is needed for growing salt crystals. (a) True (b) False
20. 20.🧂 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
21. 21.True or false: small pebbles dissolves in water. (a) False (b) True
22. 22.⚖️ 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 water (b) the same dish (c) sunny or shady place (d) the kind of salt
23. 23.🛟 Where should you keep the crystal dish while it dries? (a) safe from small children (b) in a busy doorway (c) on the edge of a table (d) next to the baby
24. 24.🧈 Which of these is a change that cannot be undone? (a) baking a cake (b) melting butter (c) folding paper (d) melting ice
25. 25.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) liquid crystals (b) no crystals (c) bigger crystals (d) smaller crystals
26. 26.🧂 Why do crystals appear as the dish dries? (a) the dish melts (b) salt grows roots (c) salt eats water (d) water evaporates
27. 27.True or false: turmeric powder is needed for growing salt crystals. (a) False (b) True
28. 28.🛟 Who should pour the warm water for the crystal experiment? (a) a friend who is running (b) the youngest child (c) nobody needs to (d) a grown-up
29. 29.🔍 Which is the odd one out? (a) table salt (b) small pebbles (c) baking soda (d) sugar
30. 30.🧂 Which of these dissolves in water? (a) small pebbles (b) cooking oil (c) baking soda (d) sand
31. 31.🧈 Can this change be undone: dissolving salt? (a) cannot be undone (b) can be undone
32. 32.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) warm water (c) a balloon (d) a spoon
33. 33.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) rusting iron (c) melting ice (d) milk turning to curd
34. 34.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) a piece of string (c) yeast (d) a spoon
35. 35.📘 What do we call a solution that cannot dissolve any more salt? (a) empty (b) saturated (c) frozen (d) magnetic
36. 36.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) the kind of salt (b) days to see crystals (c) sunny or shady place
37. 37.True or false: a shallow dish is needed for growing salt crystals. (a) True (b) False
38. 38.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a spoon (c) a mirror (d) a magnet
39. 39.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the amount of water”? (a) we measure it (b) we keep it the same (c) we change it
40. 40.🔍 Which is the odd one out? (a) sawdust (b) sugar (c) chalk powder (d) cooking oil

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