Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 163 · 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 balloon for growing salt crystals? (a) needed (b) not needed
2. 2.True or false: a shallow dish is not needed for growing salt crystals. (a) True (b) False
3. 3.🧈 Which of these is a change that can be undone? (a) rusting iron (b) browning lemon ink (c) dissolving salt (d) cooking an egg
4. 4.🧈 Can this change be undone: rusting iron? (a) cannot be undone (b) can be undone
5. 5.True or false: glucose powder does not dissolve in water. (a) False (b) True
6. 6.🧂 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
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) the amount of salt (b) sunny or shady place (c) the same dish (d) the kind of salt
8. 8.True or false: sawdust dissolves in water. (a) True (b) False
9. 9.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a spoon (c) turmeric powder (d) salt
10. 10.True or false: a spoon is not needed for growing salt crystals. (a) False (b) True
11. 11.🔍 Which is the odd one out? (a) food colour (b) baking soda (c) table salt (d) sand
12. 12.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) sunny or shady place (b) the same dish (c) the amount of water (d) days to see crystals
13. 13.True or false: a magnet is not needed for growing salt crystals. (a) True (b) False
14. 14.⚖️ 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
15. 15.True or false: melting butter is a change that cannot be undone. (a) False (b) True
16. 16.⚖️ 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
17. 17.🛟 Who should pour the warm water for the crystal experiment? (a) a grown-up (b) the youngest child (c) a friend who is running (d) nobody needs to
18. 18.🔮 Predict: you cover the dish so no water can escape. What happens? (a) few or no crystals (b) crystals grow faster (c) it fizzes (d) it turns sweet
19. 19.🧂 Which of these dissolves in water? (a) cooking oil (b) sawdust (c) sand (d) glucose powder
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 of these does not dissolve in water? (a) food colour (b) sand (c) glucose powder (d) sugar
22. 22.🌊 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
23. 23.🧂 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
24. 24.⚖️ 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 measure it (c) we change it
25. 25.🔍 Which is the odd one out? (a) sawdust (b) glucose powder (c) baking soda (d) sugar
26. 26.True or false: baking soda dissolves in water. (a) False (b) True
27. 27.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a balloon (c) salt (d) a spoon
28. 28.📘 What do we call a solution that cannot dissolve any more salt? (a) empty (b) frozen (c) magnetic (d) saturated
29. 29.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a spoon (c) a piece of string (d) a battery cell
30. 30.🧺 Which of these is needed for growing salt crystals? (a) a piece of string (b) yeast (c) a balloon (d) turmeric powder
31. 31.True or false: salt is not needed for growing salt crystals. (a) True (b) False
32. 32.⚖️ 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) True (b) False
33. 33.True or false: folding paper is a change that can be undone. (a) False (b) True
34. 34.🔍 Which is the odd one out? (a) cooking oil (b) small pebbles (c) glucose powder (d) sand
35. 35.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to butter (b) it turns to oil (c) salt crystals form (d) sugar crystals form
36. 36.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is kept the same. (a) False (b) True
37. 37.🧺 Do we need a magnet for growing salt crystals? (a) not needed (b) needed
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 kept the same. (a) False (b) True
39. 39.True or false: salt is needed for growing salt crystals. (a) True (b) False
40. 40.🧈 Which of these is a change that can be undone? (a) rusting iron (b) baking a cake (c) melting ice (d) milk turning to curd

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids