Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 623 · 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.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
2. 2.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) folding paper (c) melting ice (d) browning lemon ink
3. 3.🛟 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
4. 4.🧂 Which of these does not dissolve in water? (a) cooking oil (b) food colour (c) table salt (d) glucose powder
5. 5.⚖️ 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) False (b) True
6. 6.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) liquid crystals (b) bigger crystals (c) smaller crystals (d) no crystals
7. 7.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) warm water (c) a spoon (d) a balloon
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 what we measure. (a) False (b) True
9. 9.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is kept the same. (a) False (b) True
10. 10.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone
11. 11.🧺 Do we need turmeric powder for growing salt crystals? (a) needed (b) not needed
12. 12.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
13. 13.🛟 Who should pour the warm water for the crystal experiment? (a) a grown-up (b) the youngest child (c) nobody needs to (d) a friend who is running
14. 14.🧈 Can this change be undone: cooking an egg? (a) cannot be undone (b) can be undone
15. 15.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) warm water (c) turmeric powder (d) a shallow dish
16. 16.⚖️ 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
17. 17.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a spoon (c) a magnet (d) a shallow dish
18. 18.🔍 Which is the odd one out? (a) baking soda (b) glucose powder (c) cooking oil (d) table salt
19. 19.🧺 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) yeast
20. 20.True or false: a spoon is not needed for growing salt crystals. (a) True (b) False
21. 21.🔍 Which is the odd one out? (a) sugar (b) table salt (c) chalk powder (d) baking soda
22. 22.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) baking a cake (c) cooking an egg (d) melting butter
23. 23.⚖️ 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 measure it (b) we change it (c) we keep it the same
24. 24.True or false: sawdust dissolves in water. (a) False (b) True
25. 25.🧂 Which of these does not dissolve in water? (a) glucose powder (b) food colour (c) chalk powder (d) table salt
26. 26.🌊 How is salt made in salt pans by the sea? (a) fish make it (b) salt rains down (c) sand is ground up (d) sea water evaporates
27. 27.🔍 Which is the odd one out? (a) cooking oil (b) small pebbles (c) chalk powder (d) glucose powder
28. 28.⚖️ 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 change it (b) we measure it (c) we keep it the same
29. 29.🧈 Which of these is a change that can be undone? (a) dissolving salt (b) rusting iron (c) baking a cake (d) milk turning to curd
30. 30.True or false: food colour does not dissolve in water. (a) False (b) True
31. 31.True or false: rusting iron is a change that can be undone. (a) False (b) True
32. 32.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
33. 33.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) it turns to butter (c) sugar crystals form (d) it turns to oil
34. 34.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) a piece of string (c) a spoon (d) a mirror
35. 35.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) salt (c) turmeric powder (d) a spoon
36. 36.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
37. 37.⚖️ 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 amount of water (b) the same dish (c) sunny or shady place (d) the kind of salt
38. 38.🔍 Which is the odd one out? (a) glucose powder (b) sugar (c) baking soda (d) sawdust
39. 39.🧂 Does chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water
40. 40.⚖️ 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) sunny or shady place (d) the kind of salt

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