Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 394 · 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) the amount of water (b) days to see crystals (c) sunny or shady place
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 the one thing we change. (a) False (b) True
3. 3.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) it turns sweet (c) few or no crystals (d) crystals grow faster
4. 4.True or false: folding paper is a change that can be undone. (a) True (b) False
5. 5.🛟 Where should you keep the crystal dish while it dries? (a) safe from small children (b) on the edge of a table (c) next to the baby (d) in a busy doorway
6. 6.True or false: small pebbles dissolves in water. (a) False (b) True
7. 7.🧺 Do we need warm water for growing salt crystals? (a) needed (b) not needed
8. 8.📘 What do we call a solution that cannot dissolve any more salt? (a) frozen (b) magnetic (c) empty (d) saturated
9. 9.🧈 Which of these is a change that can be undone? (a) dissolving salt (b) milk turning to curd (c) rusting iron (d) baking a cake
10. 10.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) it turns to oil (c) it turns to butter (d) sugar crystals form
11. 11.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) bigger crystals (b) no crystals (c) smaller crystals (d) liquid crystals
12. 12.True or false: a shallow dish is needed for growing salt crystals. (a) False (b) True
13. 13.True or false: salt is needed for growing salt crystals. (a) False (b) True
14. 14.True or false: a mirror is needed for growing salt crystals. (a) False (b) True
15. 15.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is what we measure. (a) False (b) True
16. 16.⚖️ 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 kind of salt (b) sunny or shady place (c) the amount of water (d) days to see crystals
17. 17.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a piece of string (c) yeast (d) a battery cell
18. 18.⚖️ 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
19. 19.True or false: turmeric powder is needed for growing salt crystals. (a) True (b) False
20. 20.True or false: warm water is not needed for growing salt crystals. (a) True (b) False
21. 21.🧂 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
22. 22.🧺 Do we need a battery cell for growing salt crystals? (a) needed (b) not needed
23. 23.🧂 Which of these does not dissolve in water? (a) food colour (b) chalk powder (c) table salt (d) glucose powder
24. 24.🛟 Who should pour the warm water for the crystal experiment? (a) a grown-up (b) a friend who is running (c) the youngest child (d) nobody needs to
25. 25.🌊 How is salt made in salt pans by the sea? (a) fish make it (b) sea water evaporates (c) salt rains down (d) sand is ground up
26. 26.🧈 Which of these is a change that can be undone? (a) freezing water (b) baking a cake (c) rusting iron (d) cooking an egg
27. 27.🧂 Which of these dissolves in water? (a) cooking oil (b) glucose powder (c) sawdust (d) sand
28. 28.🔍 Which is the odd one out? (a) small pebbles (b) sand (c) cooking oil (d) glucose powder
29. 29.🧈 Can this change be undone: dissolving salt? (a) cannot be undone (b) can be undone
30. 30.🧂 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
31. 31.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) salt (c) a shallow dish (d) turmeric powder
32. 32.🧺 Do we need a balloon for growing salt crystals? (a) needed (b) not needed
33. 33.🧂 Which of these does not dissolve in water? (a) baking soda (b) table salt (c) sand (d) food colour
34. 34.True or false: food colour does not dissolve in water. (a) False (b) True
35. 35.🧂 Which of these dissolves in water? (a) small pebbles (b) cooking oil (c) sugar (d) sand
36. 36.🔍 Which is the odd one out? (a) chalk powder (b) sand (c) small pebbles (d) sugar
37. 37.🧈 Which of these is a change that can be undone? (a) folding paper (b) baking a cake (c) cooking an egg (d) milk turning to curd
38. 38.True or false: rusting iron is a change that can be undone. (a) True (b) False
39. 39.⚖️ 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 change it (b) we measure it (c) we keep it the same
40. 40.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a battery cell (c) a spoon (d) warm water

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