Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 95 · 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 “days to see crystals”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
3. 3.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) liquid crystals (b) smaller crystals (c) bigger crystals (d) no crystals
4. 4.🧂 Which of these does not dissolve in water? (a) baking soda (b) small pebbles (c) table salt (d) sugar
5. 5.True or false: turmeric powder is not needed for growing salt crystals. (a) True (b) False
6. 6.🛟 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
7. 7.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny cubes (b) tiny triangles (c) tiny stars (d) tiny spheres
8. 8.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a piece of string (c) a shallow dish (d) a magnet
9. 9.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) turmeric powder (c) salt (d) warm water
10. 10.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a spoon (c) a piece of string (d) a balloon
11. 11.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
12. 12.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) browning lemon ink (c) folding paper (d) freezing water
13. 13.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) a battery cell (c) a balloon (d) a piece of string
14. 14.🔍 Which is the odd one out? (a) food colour (b) sand (c) baking soda (d) glucose powder
15. 15.⚖️ 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 keep it the same (b) we change it (c) we measure it
16. 16.🛟 Where should you keep the crystal dish while it dries? (a) safe from small children (b) in a busy doorway (c) on the edge of a table (d) next to the baby
17. 17.🧈 Can this change be undone: rusting iron? (a) can be undone (b) cannot be undone
18. 18.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) melting ice (c) cooking an egg (d) folding paper
19. 19.⚖️ 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) False (b) True
20. 20.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) salt (c) a shallow dish (d) a battery cell
21. 21.🧂 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
22. 22.⚖️ 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) False (b) True
23. 23.🔮 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
24. 24.⚖️ 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
25. 25.🔍 Which is the odd one out? (a) chalk powder (b) sand (c) sawdust (d) table salt
26. 26.🧈 Which of these is a change that can be undone? (a) baking a cake (b) melting ice (c) cooking an egg (d) rusting iron
27. 27.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a mirror (b) salt (c) a shallow dish (d) warm water
28. 28.🧺 Do we need a balloon for growing salt crystals? (a) not needed (b) needed
29. 29.🔍 Which is the odd one out? (a) sawdust (b) table salt (c) sugar (d) glucose powder
30. 30.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
31. 31.🧈 Which of these is a change that can be undone? (a) freezing water (b) milk turning to curd (c) rusting iron (d) browning lemon ink
32. 32.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is the one thing we change. (a) False (b) True
33. 33.🔮 Predict: you cover the dish so no water can escape. What happens? (a) crystals grow faster (b) it turns sweet (c) few or no crystals (d) it fizzes
34. 34.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a balloon (c) a spoon (d) yeast
35. 35.True or false: rusting iron is a change that cannot be undone. (a) True (b) False
36. 36.📘 What do we call a solution that cannot dissolve any more salt? (a) empty (b) saturated (c) frozen (d) magnetic
37. 37.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) warm water (c) a battery cell (d) yeast
38. 38.True or false: chalk powder dissolves in water. (a) False (b) True
39. 39.True or false: a mirror is needed for growing salt crystals. (a) True (b) False
40. 40.🔍 Which is the odd one out? (a) chalk powder (b) baking soda (c) small pebbles (d) cooking oil

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