Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 159 · 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? True or false: days to see crystals is what we measure. (a) False (b) True
2. 2.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) browning lemon ink (c) melting butter (d) milk turning to curd
3. 3.🧂 Which of these dissolves in water? (a) cooking oil (b) chalk powder (c) glucose powder (d) sand
4. 4.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
5. 5.🔍 Which is the odd one out? (a) baking soda (b) sawdust (c) sand (d) chalk powder
6. 6.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) smaller crystals (b) bigger crystals (c) no crystals (d) liquid crystals
7. 7.⚖️ 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 same dish
8. 8.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a battery cell (c) warm water (d) salt
9. 9.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
10. 10.True or false: turmeric powder is not needed for growing salt crystals. (a) True (b) False
11. 11.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is kept the same. (a) True (b) False
12. 12.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) next to the baby (c) safe from small children (d) on the edge of a table
13. 13.🧈 Can this change be undone: cooking an egg? (a) can be undone (b) cannot be undone
14. 14.⚖️ 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
15. 15.True or false: a magnet is needed for growing salt crystals. (a) False (b) True
16. 16.📘 What do we call a solution that cannot dissolve any more salt? (a) magnetic (b) empty (c) frozen (d) saturated
17. 17.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) turmeric powder (c) a shallow dish (d) yeast
18. 18.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) yeast (c) a spoon (d) a piece of string
19. 19.⚖️ 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) True (b) False
20. 20.True or false: a magnet is not needed for growing salt crystals. (a) True (b) False
21. 21.🧺 Which of these is not needed for growing salt crystals? (a) a mirror (b) salt (c) a shallow dish (d) a piece of string
22. 22.🧈 Which of these is a change that can be undone? (a) rusting iron (b) melting ice (c) baking a cake (d) cooking an egg
23. 23.🧈 Can this change be undone: rusting iron? (a) can be undone (b) cannot be undone
24. 24.🧂 Why do crystals appear as the dish dries? (a) salt grows roots (b) the dish melts (c) salt eats water (d) water evaporates
25. 25.🛟 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
26. 26.🧂 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
27. 27.🔍 Which is the odd one out? (a) sugar (b) glucose powder (c) chalk powder (d) table salt
28. 28.True or false: sand dissolves in water. (a) True (b) False
29. 29.⚖️ 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) the amount of salt (c) sunny or shady place (d) the amount of water
30. 30.⚖️ 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 keep it the same (b) we change it (c) we measure it
31. 31.⚖️ 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) True (b) False
32. 32.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
33. 33.🧺 Which of these is needed for growing salt crystals? (a) a spoon (b) a mirror (c) a magnet (d) a balloon
34. 34.🧺 Which of these is not needed for growing salt crystals? (a) a balloon (b) a spoon (c) a piece of string (d) a shallow dish
35. 35.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) yeast (c) salt (d) turmeric powder
36. 36.🧂 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
37. 37.🌊 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
38. 38.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) dissolving salt (c) melting ice (d) rusting iron
39. 39.🧈 Can this change be undone: melting butter? (a) can be undone (b) cannot be undone
40. 40.True or false: cooking oil dissolves in water. (a) False (b) True

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