Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 187 · 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.🧺 Do we need a spoon for growing salt crystals? (a) needed (b) not needed
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 what we measure. (a) True (b) False
3. 3.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) salt (c) warm water (d) a mirror
4. 4.True or false: a mirror is needed for growing salt crystals. (a) False (b) True
5. 5.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
6. 6.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) on the edge of a table (c) safe from small children (d) in a busy doorway
7. 7.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) days to see crystals (b) the amount of salt (c) sunny or shady place (d) the same dish
8. 8.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a magnet (c) a shallow dish (d) a piece of string
9. 9.🧂 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
10. 10.🧺 Do we need a piece of string for growing salt crystals? (a) needed (b) not needed
11. 11.🧂 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
12. 12.True or false: a magnet is needed for growing salt crystals. (a) True (b) False
13. 13.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) liquid crystals (c) smaller crystals (d) bigger crystals
14. 14.🧂 Why do we stir in salt until no more will dissolve? (a) to change its colour (b) to make it fizz (c) to make it very salty (d) to cool the water
15. 15.🧺 Do we need a balloon for growing salt crystals? (a) needed (b) not needed
16. 16.🧈 Can this change be undone: dissolving salt? (a) cannot be undone (b) can be undone
17. 17.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is kept the same. (a) True (b) False
18. 18.⚖️ 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 keep it the same (b) we change it (c) we measure it
19. 19.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) a mirror (c) salt (d) a spoon
20. 20.🧂 Why do crystals appear as the dish dries? (a) salt grows roots (b) salt eats water (c) water evaporates (d) the dish melts
21. 21.🔍 Which is the odd one out? (a) baking soda (b) glucose powder (c) chalk powder (d) food colour
22. 22.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) melting butter (c) baking a cake (d) browning lemon ink
23. 23.🔍 Which is the odd one out? (a) small pebbles (b) sawdust (c) cooking oil (d) baking soda
24. 24.🔮 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
25. 25.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) a mirror (c) a spoon (d) a magnet
26. 26.True or false: a spoon is needed for growing salt crystals. (a) False (b) True
27. 27.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny stars (b) tiny spheres (c) tiny triangles (d) tiny cubes
28. 28.True or false: turmeric powder is needed for growing salt crystals. (a) False (b) True
29. 29.⚖️ 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
30. 30.⚖️ 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
31. 31.🔮 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
32. 32.True or false: a piece of string is needed for growing salt crystals. (a) True (b) False
33. 33.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) a piece of string (c) warm water (d) a magnet
34. 34.🔍 Which is the odd one out? (a) small pebbles (b) chalk powder (c) food colour (d) sand
35. 35.True or false: salt is needed for growing salt crystals. (a) True (b) False
36. 36.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) melting ice (c) cooking an egg (d) freezing water
37. 37.🔍 Which is the odd one out? (a) cooking oil (b) chalk powder (c) glucose powder (d) small pebbles
38. 38.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) warm water (c) a shallow dish (d) turmeric powder
39. 39.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) a shallow dish (c) a battery cell (d) a piece of string
40. 40.🧂 Which of these does not dissolve in water? (a) glucose powder (b) chalk powder (c) food colour (d) sugar

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