Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 724 · 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 the one thing we change? (a) the kind of salt (b) sunny or shady place (c) days to see crystals (d) the amount of water
2. 2.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
3. 3.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) crystals grow faster (c) few or no crystals (d) it turns sweet
4. 4.🛟 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
5. 5.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) safe from small children (c) next to the baby (d) in a busy doorway
6. 6.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a spoon (c) salt (d) a magnet
7. 7.🔍 Which is the odd one out? (a) sand (b) cooking oil (c) glucose powder (d) chalk powder
8. 8.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) warm water (c) a shallow dish (d) a battery cell
9. 9.⚖️ 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 change it (b) we keep it the same (c) we measure it
10. 10.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny stars (b) tiny cubes (c) tiny spheres (d) tiny triangles
11. 11.⚖️ 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
12. 12.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) browning lemon ink (c) cooking an egg (d) freezing water
13. 13.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) a mirror (c) salt (d) a piece of string
14. 14.📘 What do we call a solution that cannot dissolve any more salt? (a) magnetic (b) frozen (c) empty (d) saturated
15. 15.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
16. 16.True or false: a piece of string is needed for growing salt crystals. (a) False (b) True
17. 17.🧺 Do we need yeast for growing salt crystals? (a) needed (b) not needed
18. 18.⚖️ 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
19. 19.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) a shallow dish (c) warm water (d) turmeric powder
20. 20.🧂 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
21. 21.⚖️ 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
22. 22.True or false: a mirror is not needed for growing salt crystals. (a) False (b) True
23. 23.🧂 Why do we stir in salt until no more will dissolve? (a) to cool the water (b) to make it fizz (c) to make it very salty (d) to change its colour
24. 24.🧂 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
25. 25.🧂 Which of these does not dissolve in water? (a) glucose powder (b) table salt (c) chalk powder (d) baking soda
26. 26.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) a magnet (c) a spoon (d) a balloon
27. 27.🧂 Which of these dissolves in water? (a) small pebbles (b) glucose powder (c) chalk powder (d) sawdust
28. 28.⚖️ 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) True (b) False
29. 29.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) it turns to butter (c) sugar crystals form (d) it turns to oil
30. 30.🔍 Which is the odd one out? (a) sugar (b) table salt (c) small pebbles (d) food colour
31. 31.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a shallow dish (c) a balloon (d) a battery cell
32. 32.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a balloon (c) a spoon (d) warm water
33. 33.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) baking a cake (c) cooking an egg (d) folding paper
34. 34.⚖️ 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 measure it (c) we keep it the same
35. 35.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) bigger crystals (c) smaller crystals (d) liquid crystals
36. 36.⚖️ 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) False (b) True
37. 37.⚖️ 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
38. 38.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) a shallow dish (c) a magnet (d) warm water
39. 39.🧈 Which of these is a change that can be undone? (a) baking a cake (b) rusting iron (c) melting butter (d) milk turning to curd
40. 40.🧂 Which of these does not dissolve in water? (a) sugar (b) cooking oil (c) baking soda (d) glucose powder

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