Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 291 · 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 spoon is needed for growing salt crystals. (a) True (b) False
2. 2.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
3. 3.True or false: melting ice is a change that can be undone. (a) False (b) True
4. 4.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) turmeric powder (c) a battery cell (d) salt
5. 5.🔮 Predict: you cover the dish so no water can escape. What happens? (a) few or no crystals (b) it turns sweet (c) it fizzes (d) crystals grow faster
6. 6.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “days to see crystals”? (a) we keep it the same (b) we change it (c) we measure it
7. 7.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
8. 8.True or false: small pebbles dissolves in water. (a) True (b) False
9. 9.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
10. 10.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a shallow dish (c) warm water (d) turmeric powder
11. 11.🧂 Which of these dissolves in water? (a) sand (b) sugar (c) chalk powder (d) small pebbles
12. 12.True or false: melting butter is a change that cannot be undone. (a) True (b) False
13. 13.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny triangles (b) tiny cubes (c) tiny stars (d) tiny spheres
14. 14.True or false: melting ice is a change that cannot be undone. (a) True (b) False
15. 15.⚖️ 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) days to see crystals (c) the amount of water (d) sunny or shady place
16. 16.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) it turns to oil (c) it turns to butter (d) sugar crystals form
17. 17.🧂 Why do we stir in salt until no more will dissolve? (a) to change its colour (b) to make it fizz (c) to cool the water (d) to make it very salty
18. 18.🧈 Which of these is a change that cannot be undone? (a) milk turning to curd (b) melting butter (c) folding paper (d) melting ice
19. 19.🧺 Which of these is needed for growing salt crystals? (a) a piece of string (b) a mirror (c) a battery cell (d) turmeric powder
20. 20.🧺 Do we need a balloon for growing salt crystals? (a) not needed (b) needed
21. 21.🔍 Which is the odd one out? (a) small pebbles (b) sawdust (c) sand (d) sugar
22. 22.⚖️ 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 change it (b) we keep it the same (c) we measure it
23. 23.🧂 Why do crystals appear as the dish dries? (a) salt grows roots (b) water evaporates (c) salt eats water (d) the dish melts
24. 24.🧺 Which of these is not needed for growing salt crystals? (a) a mirror (b) a shallow dish (c) a spoon (d) warm water
25. 25.🧂 Which of these does not dissolve in water? (a) sugar (b) sawdust (c) glucose powder (d) baking soda
26. 26.📘 What do we call a solution that cannot dissolve any more salt? (a) frozen (b) empty (c) saturated (d) magnetic
27. 27.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a magnet (c) a shallow dish (d) a piece of string
28. 28.🧂 Which of these dissolves in water? (a) sawdust (b) chalk powder (c) sand (d) baking soda
29. 29.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) in a busy doorway (c) on the edge of a table (d) safe from small children
30. 30.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is kept the same. (a) False (b) True
31. 31.⚖️ 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 change it (c) we keep it the same
32. 32.True or false: salt is needed for growing salt crystals. (a) False (b) True
33. 33.True or false: turmeric powder is not needed for growing salt crystals. (a) True (b) False
34. 34.🔍 Which is the odd one out? (a) food colour (b) table salt (c) sand (d) glucose powder
35. 35.🔍 Which is the odd one out? (a) table salt (b) food colour (c) glucose powder (d) cooking oil
36. 36.🧺 Do we need a magnet for growing salt crystals? (a) needed (b) not needed
37. 37.🧺 Do we need a piece of string for growing salt crystals? (a) not needed (b) needed
38. 38.🧂 Which of these dissolves in water? (a) sawdust (b) sand (c) small pebbles (d) table salt
39. 39.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) smaller crystals (b) liquid crystals (c) bigger crystals (d) no crystals
40. 40.🧈 Can this change be undone: folding paper? (a) can be undone (b) cannot be undone

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