Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 459 · 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.🧂 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
2. 2.🧂 Which of these does not dissolve in water? (a) table salt (b) sand (c) baking soda (d) glucose powder
3. 3.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a spoon (c) warm water (d) yeast
4. 4.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) a battery cell (c) a spoon (d) a piece of string
5. 5.True or false: cooking oil does not dissolve in water. (a) False (b) True
6. 6.🧂 Why do crystals appear as the dish dries? (a) salt eats water (b) the dish melts (c) water evaporates (d) salt grows roots
7. 7.True or false: a balloon is needed for growing salt crystals. (a) False (b) True
8. 8.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
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 the one thing we change. (a) True (b) False
10. 10.🌊 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
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.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) turmeric powder (c) a spoon (d) a battery cell
13. 13.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) salt (c) turmeric powder (d) a mirror
14. 14.⚖️ 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) sunny or shady place (b) the amount of water (c) the amount of salt (d) days to see crystals
15. 15.True or false: folding paper is a change that cannot be undone. (a) True (b) False
16. 16.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
17. 17.🔍 Which is the odd one out? (a) cooking oil (b) glucose powder (c) chalk powder (d) small pebbles
18. 18.🧺 Do we need a spoon for growing salt crystals? (a) not needed (b) needed
19. 19.⚖️ 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) the amount of salt (c) the same dish (d) days to see crystals
20. 20.⚖️ 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
21. 21.🔍 Which is the odd one out? (a) glucose powder (b) food colour (c) sugar (d) sand
22. 22.True or false: a spoon is not needed for growing salt crystals. (a) False (b) True
23. 23.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
24. 24.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) a shallow dish (c) a magnet (d) a battery cell
25. 25.🧂 Why do we stir in salt until no more will dissolve? (a) to cool the water (b) to change its colour (c) to make it fizz (d) to make it very salty
26. 26.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a piece of string (c) salt (d) a balloon
27. 27.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
28. 28.🧂 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
29. 29.True or false: melting butter is a change that can be undone. (a) False (b) True
30. 30.🧺 Which of these is needed for growing salt crystals? (a) a piece of string (b) a balloon (c) a mirror (d) turmeric powder
31. 31.🧂 Which of these dissolves in water? (a) sugar (b) sand (c) small pebbles (d) sawdust
32. 32.🧈 Which of these is a change that can be undone? (a) rusting iron (b) melting butter (c) milk turning to curd (d) cooking an egg
33. 33.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) sugar crystals form (c) it turns to oil (d) it turns to butter
34. 34.🧂 Which of these dissolves in water? (a) sand (b) glucose powder (c) sawdust (d) chalk powder
35. 35.⚖️ 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 keep it the same (c) we measure it
36. 36.True or false: yeast is not needed for growing salt crystals. (a) True (b) False
37. 37.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
38. 38.🧺 Do we need turmeric powder for growing salt crystals? (a) needed (b) not needed
39. 39.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) salt (c) a battery cell (d) a shallow dish
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 measure it (b) we keep it the same (c) we change it

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