Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 527 · 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? What do we do with “the amount of water”? (a) we keep it the same (b) we measure it (c) we change it
2. 2.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is kept the same. (a) True (b) False
3. 3.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a battery cell (c) warm water (d) salt
4. 4.True or false: glucose powder does not dissolve in water. (a) True (b) False
5. 5.🧂 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
6. 6.True or false: table salt does not dissolve in water. (a) False (b) True
7. 7.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) few or no crystals (c) crystals grow faster (d) it turns sweet
8. 8.🔍 Which is the odd one out? (a) sand (b) small pebbles (c) cooking oil (d) glucose powder
9. 9.🧂 Which of these dissolves in water? (a) sand (b) chalk powder (c) sugar (d) sawdust
10. 10.⚖️ 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 change it (b) we keep it the same (c) we measure it
11. 11.⚖️ 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 keep it the same (c) we change it
12. 12.True or false: turmeric powder is needed for growing salt crystals. (a) True (b) False
13. 13.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) salt (c) turmeric powder (d) a piece of string
14. 14.⚖️ 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 keep it the same (c) we change it
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.🧺 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
17. 17.True or false: sawdust does not dissolve in water. (a) False (b) True
18. 18.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) liquid crystals (b) no crystals (c) bigger crystals (d) smaller crystals
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 kept the same. (a) False (b) True
20. 20.🔍 Which is the odd one out? (a) cooking oil (b) baking soda (c) small pebbles (d) sawdust
21. 21.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) safe from small children (c) on the edge of a table (d) in a busy doorway
22. 22.True or false: melting butter is a change that cannot be undone. (a) True (b) False
23. 23.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) baking a cake (c) cooking an egg (d) melting ice
24. 24.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is what we measure. (a) False (b) True
25. 25.True or false: a balloon is needed for growing salt crystals. (a) True (b) False
26. 26.⚖️ 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
27. 27.True or false: a magnet is needed for growing salt crystals. (a) False (b) True
28. 28.🔍 Which is the odd one out? (a) sand (b) sugar (c) glucose powder (d) table salt
29. 29.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny spheres (b) tiny stars (c) tiny cubes (d) tiny triangles
30. 30.True or false: a battery cell is not needed for growing salt crystals. (a) False (b) True
31. 31.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) sugar crystals form (b) salt crystals form (c) it turns to butter (d) it turns to oil
32. 32.🧂 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
33. 33.🧈 Can this change be undone: freezing water? (a) can be undone (b) cannot be undone
34. 34.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) rusting iron (c) freezing water (d) browning lemon ink
35. 35.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) a battery cell (c) warm water (d) turmeric powder
36. 36.🧂 Does chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water
37. 37.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) the same dish (b) the amount of water (c) days to see crystals (d) sunny or shady place
38. 38.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) yeast (b) warm water (c) a shallow dish (d) a piece of string
39. 39.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) warm water (c) a battery cell (d) a shallow dish
40. 40.True or false: cooking an egg is a change that cannot be undone. (a) True (b) False

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