Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 909 · 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.⚖️ 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) the same dish (c) sunny or shady place
2. 2.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) a grown-up (c) the youngest child (d) a friend who is running
3. 3.🔍 Which is the odd one out? (a) cooking oil (b) small pebbles (c) table salt (d) sand
4. 4.🔮 Predict: you cover the dish so no water can escape. What happens? (a) crystals grow faster (b) few or no crystals (c) it turns sweet (d) it fizzes
5. 5.⚖️ 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
6. 6.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) sugar crystals form (b) it turns to butter (c) it turns to oil (d) salt crystals form
7. 7.🧂 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
8. 8.True or false: glucose powder does not dissolve in water. (a) True (b) False
9. 9.True or false: browning lemon ink is a change that cannot be undone. (a) True (b) False
10. 10.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) melting butter (c) rusting iron (d) baking a cake
11. 11.🧈 Can this change be undone: folding paper? (a) cannot be undone (b) can be undone
12. 12.True or false: salt is not needed for growing salt crystals. (a) True (b) False
13. 13.🛟 Where should you keep the crystal dish while it dries? (a) safe from small children (b) on the edge of a table (c) next to the baby (d) in a busy doorway
14. 14.🧺 Do we need a balloon for growing salt crystals? (a) not needed (b) needed
15. 15.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) smaller crystals (c) liquid crystals (d) bigger crystals
16. 16.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) warm water (c) turmeric powder (d) a mirror
17. 17.True or false: a magnet is needed for growing salt crystals. (a) True (b) False
18. 18.🧂 Which of these does not dissolve in water? (a) food colour (b) glucose powder (c) baking soda (d) sand
19. 19.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
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 measure it (b) we keep it the same (c) we change it
21. 21.True or false: milk turning to curd is a change that cannot be undone. (a) False (b) True
22. 22.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
23. 23.🧂 Which of these does not dissolve in water? (a) glucose powder (b) table salt (c) cooking oil (d) sugar
24. 24.🧈 Which of these is a change that can be undone? (a) rusting iron (b) baking a cake (c) cooking an egg (d) freezing water
25. 25.⚖️ 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
26. 26.🧂 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
27. 27.⚖️ 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
28. 28.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a piece of string (c) a spoon (d) a balloon
29. 29.🧺 Do we need a piece of string for growing salt crystals? (a) not needed (b) needed
30. 30.True or false: browning lemon ink is a change that can be undone. (a) True (b) False
31. 31.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
32. 32.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
33. 33.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is the one thing we change. (a) False (b) True
34. 34.🧂 Does chalk powder 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? Which of these is kept the same? (a) the amount of salt (b) sunny or shady place (c) days to see crystals
36. 36.🌊 How is salt made in salt pans by the sea? (a) fish make it (b) sand is ground up (c) sea water evaporates (d) salt rains down
37. 37.🧂 Which of these dissolves in water? (a) sand (b) glucose powder (c) cooking oil (d) chalk powder
38. 38.⚖️ 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) True (b) False
39. 39.🔍 Which is the odd one out? (a) sawdust (b) small pebbles (c) sand (d) baking soda
40. 40.⚖️ 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) True (b) False

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