Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 395 · 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? Which of these is kept the same? (a) days to see crystals (b) the amount of water (c) sunny or shady place
2. 2.🧂 Which of these does not dissolve in water? (a) food colour (b) sugar (c) table salt (d) chalk powder
3. 3.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a shallow dish (c) turmeric powder (d) warm water
4. 4.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is what we measure. (a) True (b) False
5. 5.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is kept the same. (a) False (b) True
6. 6.⚖️ 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 change it (c) we measure it
7. 7.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) a spoon (c) turmeric powder (d) a balloon
8. 8.⚖️ 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
9. 9.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
10. 10.🔍 Which is the odd one out? (a) small pebbles (b) sand (c) sawdust (d) table salt
11. 11.⚖️ 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) False (b) True
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 change it (b) we measure it (c) we keep it the same
13. 13.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
14. 14.🧈 Can this change be undone: folding paper? (a) can be undone (b) cannot be undone
15. 15.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny stars (b) tiny cubes (c) tiny triangles (d) tiny spheres
16. 16.True or false: yeast is needed for growing salt crystals. (a) True (b) False
17. 17.True or false: cooking an egg is a change that can be undone. (a) False (b) True
18. 18.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
19. 19.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is the one thing we change. (a) False (b) True
20. 20.True or false: salt is needed for growing salt crystals. (a) False (b) True
21. 21.True or false: small pebbles dissolves in water. (a) True (b) False
22. 22.🧺 Do we need a piece of string for growing salt crystals? (a) not needed (b) needed
23. 23.⚖️ 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
24. 24.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
25. 25.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) on the edge of a table (c) in a busy doorway (d) safe from small children
26. 26.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) a friend who is running (c) nobody needs to (d) a grown-up
27. 27.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) sunny or shady place (b) days to see crystals (c) the amount of salt (d) the same dish
28. 28.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a piece of string (c) warm water (d) a magnet
29. 29.⚖️ 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
30. 30.🔍 Which is the odd one out? (a) sand (b) chalk powder (c) cooking oil (d) baking soda
31. 31.⚖️ 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
32. 32.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
33. 33.🧂 Does chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water
34. 34.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a shallow dish (c) warm water (d) yeast
35. 35.True or false: melting butter is a change that can be undone. (a) False (b) True
36. 36.🧂 Which of these does not dissolve in water? (a) table salt (b) glucose powder (c) cooking oil (d) baking soda
37. 37.🧈 Can this change be undone: rusting iron? (a) can be undone (b) cannot be undone
38. 38.⚖️ 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 amount of salt
39. 39.⚖️ 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) False (b) True
40. 40.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) liquid crystals (c) smaller crystals (d) bigger crystals

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