Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 581 · 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.🧈 Can this change be undone: milk turning to curd? (a) can be undone (b) cannot be undone
2. 2.True or false: melting ice is a change that cannot be undone. (a) False (b) True
3. 3.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to oil (b) salt crystals form (c) sugar crystals form (d) it turns to butter
4. 4.True or false: food colour dissolves in water. (a) True (b) False
5. 5.🧂 Which of these dissolves in water? (a) cooking oil (b) chalk powder (c) table salt (d) sand
6. 6.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) next to the baby (c) safe from small children (d) in a busy doorway
7. 7.🧈 Which of these is a change that can be undone? (a) baking a cake (b) cooking an egg (c) milk turning to curd (d) dissolving salt
8. 8.🧈 Can this change be undone: baking a cake? (a) can be undone (b) cannot be undone
9. 9.True or false: a shallow dish is not needed for growing salt crystals. (a) False (b) True
10. 10.True or false: melting ice is a change that can be undone. (a) False (b) True
11. 11.🧂 Which of these dissolves in water? (a) baking soda (b) small pebbles (c) cooking oil (d) sawdust
12. 12.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) rusting iron (c) cooking an egg (d) melting ice
13. 13.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) bigger crystals (c) smaller crystals (d) liquid crystals
14. 14.🧈 Can this change be undone: rusting iron? (a) cannot be undone (b) can be undone
15. 15.⚖️ 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) True (b) False
16. 16.⚖️ 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 measure it (b) we change it (c) we keep it the same
17. 17.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a balloon (b) a shallow dish (c) a piece of string (d) a spoon
18. 18.⚖️ 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 measure it (b) we change it (c) we keep it the same
19. 19.🧂 Which of these does not dissolve in water? (a) glucose powder (b) sand (c) sugar (d) table salt
20. 20.📘 What do we call a solution that cannot dissolve any more salt? (a) magnetic (b) empty (c) frozen (d) saturated
21. 21.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) a battery cell (c) a piece of string (d) a spoon
22. 22.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
23. 23.⚖️ 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 keep it the same (b) we change it (c) we measure it
24. 24.True or false: yeast is needed for growing salt crystals. (a) False (b) True
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) sunny or shady place (b) days to see crystals (c) the kind of salt
26. 26.🧈 Can this change be undone: dissolving salt? (a) cannot be undone (b) can be undone
27. 27.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny stars (b) tiny cubes (c) tiny spheres (d) tiny triangles
28. 28.🔍 Which is the odd one out? (a) table salt (b) cooking oil (c) food colour (d) baking soda
29. 29.⚖️ 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
30. 30.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it turns sweet (b) crystals grow faster (c) few or no crystals (d) it fizzes
31. 31.🔍 Which is the odd one out? (a) glucose powder (b) baking soda (c) sand (d) table salt
32. 32.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a spoon (c) a magnet (d) yeast
33. 33.⚖️ 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 same dish (b) the kind of salt (c) sunny or shady place (d) the amount of water
34. 34.🌊 How is salt made in salt pans by the sea? (a) salt rains down (b) sand is ground up (c) fish make it (d) sea water evaporates
35. 35.🧈 Can this change be undone: freezing water? (a) cannot be undone (b) can be undone
36. 36.True or false: salt is needed for growing salt crystals. (a) True (b) False
37. 37.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
38. 38.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a spoon (c) a shallow dish (d) yeast
39. 39.⚖️ 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 measure it (b) we change it (c) we keep it the same
40. 40.🧂 Does glucose powder 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