Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 369 · 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.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) sugar crystals form (c) it turns to butter (d) it turns to oil
2. 2.⚖️ 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
3. 3.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) turmeric powder (c) salt (d) a piece of string
4. 4.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) a piece of string (c) a battery cell (d) salt
5. 5.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a battery cell (c) a piece of string (d) warm water
6. 6.🛟 Who should pour the warm water for the crystal experiment? (a) a grown-up (b) nobody needs to (c) the youngest child (d) a friend who is running
7. 7.🧺 Do we need a battery cell for growing salt crystals? (a) needed (b) not needed
8. 8.🧂 Which of these dissolves in water? (a) cooking oil (b) chalk powder (c) sawdust (d) glucose powder
9. 9.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a mirror (c) a spoon (d) a shallow dish
10. 10.True or false: baking a cake is a change that can be undone. (a) False (b) True
11. 11.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) browning lemon ink (c) freezing water (d) baking a cake
12. 12.⚖️ 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 measure it (b) we change it (c) we keep it the same
13. 13.🔍 Which is the odd one out? (a) small pebbles (b) sand (c) sawdust (d) sugar
14. 14.⚖️ 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
15. 15.🔍 Which is the odd one out? (a) sawdust (b) sand (c) glucose powder (d) small pebbles
16. 16.🧺 Which of these is not needed for growing salt crystals? (a) a mirror (b) a piece of string (c) a shallow dish (d) a spoon
17. 17.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a spoon (c) yeast (d) warm water
18. 18.🧈 Which of these is a change that can be undone? (a) baking a cake (b) browning lemon ink (c) melting butter (d) milk turning to curd
19. 19.🌊 How is salt made in salt pans by the sea? (a) salt rains down (b) fish make it (c) sand is ground up (d) sea water evaporates
20. 20.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) safe from small children (c) in a busy doorway (d) on the edge of a table
21. 21.True or false: melting butter is a change that can be undone. (a) False (b) True
22. 22.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
23. 23.🧂 Why do crystals appear as the dish dries? (a) salt grows roots (b) water evaporates (c) the dish melts (d) salt eats water
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 change it (b) we measure it (c) we keep it the same
25. 25.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) the kind of salt (b) days to see crystals (c) sunny or shady place
26. 26.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a spoon (c) yeast (d) warm water
27. 27.🧂 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
28. 28.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is the one thing we change. (a) True (b) False
29. 29.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone
30. 30.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is what we measure. (a) False (b) True
31. 31.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) folding paper (c) cooking an egg (d) rusting iron
32. 32.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a mirror (c) a balloon (d) a piece of string
33. 33.⚖️ 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
34. 34.True or false: salt is needed for growing salt crystals. (a) False (b) True
35. 35.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) warm water (c) a shallow dish (d) a magnet
36. 36.⚖️ 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
37. 37.🧈 Can this change be undone: browning lemon ink? (a) can be undone (b) cannot be undone
38. 38.🔍 Which is the odd one out? (a) chalk powder (b) glucose powder (c) table salt (d) baking soda
39. 39.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) liquid crystals (b) bigger crystals (c) no crystals (d) smaller crystals
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 what we measure. (a) False (b) True

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