Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 723 · 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.🧈 Which of these is a change that can be undone? (a) baking a cake (b) melting butter (c) cooking an egg (d) rusting iron
2. 2.📘 What do we call a solution that cannot dissolve any more salt? (a) empty (b) saturated (c) frozen (d) magnetic
3. 3.🧺 Do we need a piece of string for growing salt crystals? (a) not needed (b) needed
4. 4.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) salt (c) warm water (d) a mirror
5. 5.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is the one thing we change. (a) False (b) True
6. 6.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a spoon (c) a shallow dish (d) a balloon
7. 7.🧂 Why do we stir in salt until no more will dissolve? (a) to change its colour (b) to cool the water (c) to make it fizz (d) to make it very salty
8. 8.🧂 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
9. 9.⚖️ 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
10. 10.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny cubes (b) tiny triangles (c) tiny spheres (d) tiny stars
11. 11.⚖️ 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 same dish (b) the kind of salt (c) the amount of water (d) sunny or shady place
12. 12.True or false: browning lemon ink is a change that can be undone. (a) False (b) True
13. 13.🧂 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
14. 14.🧈 Which of these is a change that can be undone? (a) freezing water (b) baking a cake (c) browning lemon ink (d) cooking an egg
15. 15.⚖️ 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
16. 16.⚖️ 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
17. 17.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) sugar crystals form (b) it turns to butter (c) salt crystals form (d) it turns to oil
18. 18.⚖️ 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) True (b) False
19. 19.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a shallow dish (c) a piece of string (d) a balloon
20. 20.⚖️ 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 same dish (c) the amount of water (d) sunny or shady place
21. 21.🧂 Why do crystals appear as the dish dries? (a) water evaporates (b) the dish melts (c) salt eats water (d) salt grows roots
22. 22.True or false: food colour dissolves in water. (a) False (b) True
23. 23.🧂 Which of these does not dissolve in water? (a) baking soda (b) sand (c) glucose powder (d) food colour
24. 24.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) rusting iron (c) freezing water (d) dissolving salt
25. 25.🧺 Do we need a balloon for growing salt crystals? (a) needed (b) not needed
26. 26.True or false: warm water is not needed for growing salt crystals. (a) True (b) False
27. 27.True or false: sand does not dissolve in water. (a) True (b) False
28. 28.🧂 Which of these dissolves in water? (a) cooking oil (b) glucose powder (c) chalk powder (d) sand
29. 29.True or false: dissolving salt is a change that can be undone. (a) True (b) False
30. 30.🧺 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) turmeric powder
31. 31.🧈 Can this change be undone: baking a cake? (a) can be undone (b) cannot be undone
32. 32.🧈 Can this change be undone: melting butter? (a) can be undone (b) cannot be undone
33. 33.🧂 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
34. 34.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a magnet (c) salt (d) a piece of string
35. 35.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) yeast (c) a spoon (d) a shallow dish
36. 36.True or false: yeast is needed for growing salt crystals. (a) True (b) False
37. 37.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a piece of string (c) a magnet (d) a shallow dish
38. 38.True or false: sawdust dissolves in water. (a) False (b) True
39. 39.🔍 Which is the odd one out? (a) glucose powder (b) sawdust (c) table salt (d) baking soda
40. 40.⚖️ 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 keep it the same (c) we measure it

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