Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 858 · 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 “days to see crystals”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.True or false: warm water is not needed for growing salt crystals. (a) True (b) False
3. 3.True or false: a shallow dish is needed for growing salt crystals. (a) True (b) False
4. 4.True or false: a spoon is needed for growing salt crystals. (a) True (b) False
5. 5.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
6. 6.⚖️ 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 kind of salt (b) the amount of water (c) sunny or shady place (d) the same dish
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 keep it the same (b) we change it (c) we measure it
8. 8.True or false: freezing water is a change that cannot be undone. (a) False (b) True
9. 9.🧺 Do we need a spoon for growing salt crystals? (a) needed (b) not needed
10. 10.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) turmeric powder (c) a spoon (d) salt
11. 11.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) melting ice (c) rusting iron (d) folding paper
12. 12.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) yeast (c) salt (d) warm water
13. 13.🔍 Which is the odd one out? (a) chalk powder (b) sand (c) food colour (d) sawdust
14. 14.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) sunny or shady place (b) the amount of water (c) days to see crystals
15. 15.⚖️ 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
16. 16.🧂 Which of these does not dissolve in water? (a) glucose powder (b) sand (c) baking soda (d) food colour
17. 17.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) dissolving salt (c) melting ice (d) milk turning to curd
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 water”? (a) we keep it the same (b) we measure it (c) we change it
19. 19.🧂 Does chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water
20. 20.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny spheres (b) tiny stars (c) tiny triangles (d) tiny cubes
21. 21.🧈 Can this change be undone: rusting iron? (a) can be undone (b) cannot be undone
22. 22.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
23. 23.True or false: sand dissolves in water. (a) False (b) True
24. 24.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) in a busy doorway (c) safe from small children (d) on the edge of a table
25. 25.🧂 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
26. 26.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) freezing water (c) folding paper (d) browning lemon ink
27. 27.🔮 Predict: you cover the dish so no water can escape. What happens? (a) crystals grow faster (b) it fizzes (c) few or no crystals (d) it turns sweet
28. 28.🔍 Which is the odd one out? (a) sand (b) chalk powder (c) sawdust (d) sugar
29. 29.🧂 Which of these does not dissolve in water? (a) glucose powder (b) small pebbles (c) sugar (d) baking soda
30. 30.True or false: a mirror is needed for growing salt crystals. (a) False (b) True
31. 31.True or false: sawdust dissolves in water. (a) True (b) False
32. 32.🧈 Can this change be undone: melting ice? (a) can be undone (b) cannot be undone
33. 33.🔍 Which is the odd one out? (a) sawdust (b) small pebbles (c) table salt (d) chalk powder
34. 34.🧺 Do we need a piece of string for growing salt crystals? (a) needed (b) not needed
35. 35.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a shallow dish (c) a magnet (d) a piece of string
36. 36.🧂 Which of these dissolves in water? (a) sawdust (b) cooking oil (c) table salt (d) small pebbles
37. 37.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone
38. 38.🧂 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
39. 39.🔍 Which is the odd one out? (a) baking soda (b) sugar (c) chalk powder (d) glucose powder
40. 40.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) folding paper (c) dissolving salt (d) cooking an egg

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