Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 884 · 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.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
2. 2.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the same dish”? (a) we change it (b) we measure it (c) we keep it the same
3. 3.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
4. 4.True or false: baking soda dissolves in water. (a) True (b) False
5. 5.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is the one thing we change. (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) days to see crystals (b) sunny or shady place (c) the amount of salt
7. 7.🧈 Can this change be undone: rusting iron? (a) can be undone (b) cannot be undone
8. 8.🔍 Which is the odd one out? (a) food colour (b) glucose powder (c) table salt (d) cooking oil
9. 9.🧂 Which of these dissolves in water? (a) sand (b) baking soda (c) chalk powder (d) sawdust
10. 10.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
11. 11.True or false: melting ice is a change that can be undone. (a) True (b) False
12. 12.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) yeast (c) a battery cell (d) a piece of string
13. 13.🧂 Which of these dissolves in water? (a) chalk powder (b) sand (c) food colour (d) cooking oil
14. 14.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to oil (b) sugar crystals form (c) it turns to butter (d) salt crystals form
15. 15.⚖️ 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 same dish (b) the amount of water (c) the amount of salt (d) sunny or shady place
16. 16.True or false: a balloon is needed for growing salt crystals. (a) True (b) False
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 measure it (b) we change it (c) we keep it the same
18. 18.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is kept the same. (a) True (b) False
19. 19.True or false: salt is needed for growing salt crystals. (a) False (b) True
20. 20.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a magnet (c) a battery cell (d) a shallow dish
21. 21.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a shallow dish (c) a balloon (d) salt
22. 22.True or false: freezing water is a change that can be undone. (a) False (b) True
23. 23.🧂 Which of these dissolves in water? (a) sand (b) sugar (c) small pebbles (d) chalk powder
24. 24.🔍 Which is the odd one out? (a) sawdust (b) sugar (c) sand (d) chalk powder
25. 25.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny triangles (b) tiny spheres (c) tiny stars (d) tiny cubes
26. 26.🔍 Which is the odd one out? (a) cooking oil (b) chalk powder (c) sand (d) table salt
27. 27.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is the one thing we change. (a) True (b) False
28. 28.🧺 Do we need turmeric powder for growing salt crystals? (a) needed (b) not needed
29. 29.True or false: baking soda does not dissolve in water. (a) True (b) False
30. 30.🧺 Do we need a balloon for growing salt crystals? (a) not needed (b) needed
31. 31.🌊 How is salt made in salt pans by the sea? (a) sand is ground up (b) salt rains down (c) fish make it (d) sea water evaporates
32. 32.🧈 Can this change be undone: freezing water? (a) can be undone (b) cannot be undone
33. 33.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a mirror (c) a spoon (d) a piece of string
34. 34.True or false: baking a cake is a change that can be undone. (a) True (b) False
35. 35.⚖️ 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) False (b) True
36. 36.🧂 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
37. 37.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a magnet (c) a shallow dish (d) a spoon
38. 38.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) warm water (c) a piece of string (d) a magnet
39. 39.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a spoon (c) a battery cell (d) a shallow dish
40. 40.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) yeast (c) salt (d) a spoon

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