Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 651 · 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.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a spoon (c) a piece of string (d) a mirror
2. 2.⚖️ 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 keep it the same (c) we change it
3. 3.True or false: yeast is not needed for growing salt crystals. (a) True (b) False
4. 4.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
5. 5.True or false: freezing water is a change that can be undone. (a) True (b) False
6. 6.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) yeast (c) a battery cell (d) a shallow dish
7. 7.⚖️ 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) days to see crystals (b) the kind of salt (c) sunny or shady place (d) the amount of salt
8. 8.True or false: sugar does not dissolve in water. (a) False (b) True
9. 9.⚖️ 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 change it (b) we measure it (c) we keep it the same
10. 10.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny stars (b) tiny spheres (c) tiny triangles (d) tiny cubes
11. 11.🧂 Which of these does not dissolve in water? (a) glucose powder (b) sand (c) table salt (d) baking soda
12. 12.🧂 Which of these does not dissolve in water? (a) baking soda (b) table salt (c) sugar (d) chalk powder
13. 13.🌊 How is salt made in salt pans by the sea? (a) sand is ground up (b) sea water evaporates (c) salt rains down (d) fish make it
14. 14.🧈 Which of these is a change that can be undone? (a) baking a cake (b) melting ice (c) rusting iron (d) milk turning to curd
15. 15.🧂 Which of these dissolves in water? (a) chalk powder (b) cooking oil (c) small pebbles (d) glucose powder
16. 16.🧈 Which of these is a change that can be undone? (a) baking a cake (b) browning lemon ink (c) freezing water (d) cooking an egg
17. 17.⚖️ 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 keep it the same (b) we change it (c) we measure it
18. 18.True or false: a balloon is needed for growing salt crystals. (a) True (b) False
19. 19.🔍 Which is the odd one out? (a) sawdust (b) glucose powder (c) sugar (d) table salt
20. 20.🧺 Which of these is needed for growing salt crystals? (a) a piece of string (b) yeast (c) a mirror (d) a balloon
21. 21.🧈 Can this change be undone: melting ice? (a) can be undone (b) cannot be undone
22. 22.🔍 Which is the odd one out? (a) sawdust (b) sand (c) small pebbles (d) sugar
23. 23.True or false: milk turning to curd is a change that can be undone. (a) True (b) False
24. 24.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) salt (c) a balloon (d) a shallow dish
25. 25.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
26. 26.🧂 Does glucose powder dissolve in water? (a) dissolves in water (b) does not dissolve
27. 27.🧈 Which of these is a change that can be undone? (a) baking a cake (b) rusting iron (c) melting butter (d) cooking an egg
28. 28.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
29. 29.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is what we measure. (a) True (b) False
30. 30.⚖️ 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
31. 31.🧺 Do we need warm water for growing salt crystals? (a) needed (b) not needed
32. 32.🧺 Do we need a spoon for growing salt crystals? (a) not needed (b) needed
33. 33.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) melting ice (c) milk turning to curd (d) folding paper
34. 34.⚖️ 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) True (b) False
35. 35.🔍 Which is the odd one out? (a) baking soda (b) table salt (c) cooking oil (d) food colour
36. 36.True or false: salt is needed for growing salt crystals. (a) True (b) False
37. 37.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to oil (b) sugar crystals form (c) salt crystals form (d) it turns to butter
38. 38.⚖️ 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
39. 39.True or false: freezing water is a change that cannot be undone. (a) True (b) False
40. 40.⚖️ 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

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