Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 742 · 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.🧂 Which of these does not dissolve in water? (a) baking soda (b) sugar (c) glucose powder (d) chalk powder
2. 2.True or false: baking a cake is a change that can be undone. (a) True (b) False
3. 3.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) nobody needs to (c) a friend who is running (d) a grown-up
4. 4.True or false: chalk powder dissolves in water. (a) False (b) True
5. 5.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “days to see crystals”? (a) we measure it (b) we change it (c) we keep it the same
6. 6.⚖️ 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) True (b) False
7. 7.True or false: a mirror is not needed for growing salt crystals. (a) True (b) False
8. 8.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a shallow dish (c) a spoon (d) a magnet
9. 9.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) sunny or shady place (b) days to see crystals (c) the amount of salt
10. 10.🧂 Does chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water
11. 11.🧈 Can this change be undone: dissolving salt? (a) cannot be undone (b) can be undone
12. 12.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) it turns sweet (c) crystals grow faster (d) few or no crystals
13. 13.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to oil (b) salt crystals form (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) on the edge of a table (c) safe from small children (d) in a busy doorway
15. 15.⚖️ 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
16. 16.🔍 Which is the odd one out? (a) glucose powder (b) sand (c) baking soda (d) food colour
17. 17.⚖️ 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 kind of salt (b) sunny or shady place (c) days to see crystals (d) the amount of salt
18. 18.🧂 Why do crystals appear as the dish dries? (a) water evaporates (b) salt grows roots (c) the dish melts (d) salt eats water
19. 19.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a mirror (b) salt (c) warm water (d) a spoon
20. 20.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) rusting iron (c) freezing water (d) browning lemon ink
21. 21.⚖️ 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) True (b) False
22. 22.🧂 Which of these does not dissolve in water? (a) sawdust (b) table salt (c) sugar (d) baking soda
23. 23.⚖️ 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 same dish (b) sunny or shady place (c) days to see crystals
24. 24.🌊 How is salt made in salt pans by the sea? (a) sand is ground up (b) sea water evaporates (c) fish make it (d) salt rains down
25. 25.True or false: table salt does not dissolve in water. (a) True (b) False
26. 26.🧺 Do we need a balloon for growing salt crystals? (a) not needed (b) needed
27. 27.🧈 Can this change be undone: freezing water? (a) can be undone (b) cannot be undone
28. 28.🧂 Which of these does not dissolve in water? (a) food colour (b) sugar (c) baking soda (d) cooking oil
29. 29.⚖️ 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 change it (b) we measure it (c) we keep it the same
30. 30.True or false: chalk powder does not dissolve in water. (a) True (b) False
31. 31.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) smaller crystals (c) liquid crystals (d) bigger crystals
32. 32.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone
33. 33.🔍 Which is the odd one out? (a) food colour (b) sawdust (c) table salt (d) sugar
34. 34.🧂 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
35. 35.🔍 Which is the odd one out? (a) chalk powder (b) small pebbles (c) cooking oil (d) glucose powder
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 kept the same. (a) False (b) True
37. 37.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) turmeric powder (c) salt (d) a shallow dish
38. 38.True or false: a battery cell is needed for growing salt crystals. (a) True (b) False
39. 39.🧂 Which of these does not dissolve in water? (a) small pebbles (b) sugar (c) food colour (d) baking soda
40. 40.🧂 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve

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