Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 310 · 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: crystals grow slowly where nobody disturbs them. How big are they? (a) liquid crystals (b) no crystals (c) smaller crystals (d) bigger crystals
2. 2.⚖️ 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
3. 3.🧂 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
4. 4.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it turns sweet (b) it fizzes (c) few or no crystals (d) crystals grow faster
5. 5.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) rusting iron (c) folding paper (d) melting ice
6. 6.True or false: rusting iron is a change that can be undone. (a) False (b) True
7. 7.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a piece of string (c) a mirror (d) a shallow dish
8. 8.True or false: rusting iron is a change that cannot be undone. (a) False (b) True
9. 9.🧈 Which of these is a change that can be undone? (a) folding paper (b) cooking an egg (c) baking a cake (d) rusting iron
10. 10.🧈 Can this change be undone: browning lemon ink? (a) cannot be undone (b) can be undone
11. 11.⚖️ 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) False (b) True
12. 12.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
13. 13.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) it turns to oil (c) it turns to butter (d) sugar crystals form
14. 14.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) in a busy doorway (c) safe from small children (d) on the edge of a table
15. 15.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) a grown-up (c) nobody needs to (d) a friend who is running
16. 16.🧂 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
17. 17.📘 What do we call a solution that cannot dissolve any more salt? (a) magnetic (b) frozen (c) saturated (d) empty
18. 18.🧂 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
19. 19.⚖️ 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) True (b) False
20. 20.True or false: warm water is not needed for growing salt crystals. (a) False (b) True
21. 21.⚖️ 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 change it (c) we measure it
22. 22.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
23. 23.🔍 Which is the odd one out? (a) sand (b) glucose powder (c) sugar (d) baking soda
24. 24.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
25. 25.True or false: a battery cell is needed for growing salt crystals. (a) True (b) False
26. 26.True or false: freezing water is a change that can be undone. (a) True (b) False
27. 27.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a spoon (c) a balloon (d) yeast
28. 28.True or false: sawdust does not dissolve in water. (a) False (b) True
29. 29.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) a shallow dish (c) a mirror (d) a spoon
30. 30.True or false: glucose powder does not dissolve in water. (a) False (b) True
31. 31.True or false: table salt dissolves in water. (a) True (b) False
32. 32.🧺 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 spoon
33. 33.True or false: a battery cell is not needed for growing salt crystals. (a) False (b) True
34. 34.🧈 Can this change be undone: freezing water? (a) cannot be undone (b) can be undone
35. 35.⚖️ 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 water (b) days to see crystals (c) sunny or shady place (d) the amount of salt
36. 36.True or false: baking soda does not dissolve in water. (a) False (b) True
37. 37.🧂 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
38. 38.🌊 How is salt made in salt pans by the sea? (a) sand is ground up (b) fish make it (c) salt rains down (d) sea water evaporates
39. 39.🧺 Which of these is needed for growing salt crystals? (a) salt (b) a mirror (c) a battery cell (d) a balloon
40. 40.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed

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