Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 841 · 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.🛟 Who should pour the warm water for the crystal experiment? (a) a friend who is running (b) nobody needs to (c) the youngest child (d) a grown-up
2. 2.🧂 Which of these does not dissolve in water? (a) chalk powder (b) glucose powder (c) sugar (d) table salt
3. 3.True or false: a mirror is needed for growing salt crystals. (a) True (b) False
4. 4.⚖️ 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) True (b) False
5. 5.True or false: a spoon is needed for growing salt crystals. (a) False (b) True
6. 6.⚖️ 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) days to see crystals (c) the amount of salt
7. 7.🧂 Why do crystals appear as the dish dries? (a) the dish melts (b) salt grows roots (c) water evaporates (d) salt eats water
8. 8.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is kept the same. (a) True (b) False
9. 9.⚖️ 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 same dish (c) sunny or shady place
10. 10.⚖️ 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
11. 11.🧺 Do we need a battery cell for growing salt crystals? (a) needed (b) not needed
12. 12.⚖️ 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
13. 13.⚖️ 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 measure it (b) we change it (c) we keep it the same
14. 14.🧺 Do we need a spoon for growing salt crystals? (a) needed (b) not needed
15. 15.🧂 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
16. 16.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) yeast (c) warm water (d) a battery cell
17. 17.🧈 Can this change be undone: cooking an egg? (a) can be undone (b) cannot be undone
18. 18.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is the one thing we change. (a) True (b) False
19. 19.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a spoon (c) salt (d) a magnet
20. 20.🧈 Can this change be undone: milk turning to curd? (a) cannot be undone (b) can be undone
21. 21.⚖️ 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 measure it (c) we change it
22. 22.🧈 Can this change be undone: browning lemon ink? (a) can be undone (b) cannot be undone
23. 23.🧈 Which of these is a change that can be undone? (a) melting ice (b) baking a cake (c) cooking an egg (d) rusting iron
24. 24.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
25. 25.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) yeast (c) salt (d) turmeric powder
26. 26.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a battery cell (c) a shallow dish (d) a balloon
27. 27.True or false: baking soda does not dissolve in water. (a) True (b) False
28. 28.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny stars (b) tiny cubes (c) tiny spheres (d) tiny triangles
29. 29.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to butter (b) it turns to oil (c) sugar crystals form (d) salt crystals form
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? Which of these is what we measure? (a) the amount of water (b) days to see crystals (c) the same dish (d) sunny or shady place
32. 32.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
33. 33.True or false: a piece of string is not needed for growing salt crystals. (a) True (b) False
34. 34.True or false: cooking oil does not dissolve in water. (a) True (b) False
35. 35.🧺 Do we need turmeric powder for growing salt crystals? (a) needed (b) not needed
36. 36.True or false: baking a cake is a change that can be undone. (a) True (b) False
37. 37.🔮 Predict: you cover the dish so no water can escape. What happens? (a) few or no crystals (b) it turns sweet (c) crystals grow faster (d) it fizzes
38. 38.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
39. 39.🧺 Which of these is not needed for growing salt crystals? (a) a mirror (b) warm water (c) a piece of string (d) a shallow dish
40. 40.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) rusting iron (c) baking a cake (d) dissolving salt

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