Salt Crystal Experiment Worksheet

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

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