Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 803 · 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.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
2. 2.True or false: small pebbles dissolves in water. (a) True (b) False
3. 3.🧂 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
4. 4.🧂 Which of these dissolves in water? (a) sand (b) food colour (c) chalk powder (d) small pebbles
5. 5.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) freezing water (c) milk turning to curd (d) baking a cake
6. 6.⚖️ 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
7. 7.🧂 Why do crystals appear as the dish dries? (a) the dish melts (b) salt grows roots (c) water evaporates (d) salt eats water
8. 8.True or false: sand dissolves in water. (a) False (b) True
9. 9.⚖️ 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
10. 10.🧈 Can this change be undone: freezing water? (a) cannot be undone (b) can be undone
11. 11.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is the one thing we change. (a) False (b) True
12. 12.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) rusting iron (c) folding paper (d) baking a cake
13. 13.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) bigger crystals (b) no crystals (c) smaller crystals (d) liquid crystals
14. 14.True or false: table salt does not dissolve in water. (a) True (b) False
15. 15.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) it turns to oil (c) it turns to butter (d) sugar crystals form
16. 16.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) a mirror (c) salt (d) a piece of string
17. 17.⚖️ 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 same dish (c) sunny or shady place (d) the amount of water
18. 18.🧺 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
19. 19.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) few or no crystals (c) it turns sweet (d) crystals grow faster
20. 20.🌊 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
21. 21.🔍 Which is the odd one out? (a) sugar (b) glucose powder (c) table salt (d) sand
22. 22.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny triangles (b) tiny spheres (c) tiny stars (d) tiny cubes
23. 23.📘 What do we call a solution that cannot dissolve any more salt? (a) empty (b) frozen (c) saturated (d) magnetic
24. 24.🔍 Which is the odd one out? (a) table salt (b) glucose powder (c) sugar (d) small pebbles
25. 25.🔍 Which is the odd one out? (a) sugar (b) chalk powder (c) glucose powder (d) food colour
26. 26.True or false: cooking an egg is a change that can be undone. (a) False (b) True
27. 27.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a mirror (b) warm water (c) a piece of string (d) a spoon
28. 28.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) freezing water (c) melting butter (d) baking a cake
29. 29.🛟 Where should you keep the crystal dish while it dries? (a) safe from small children (b) on the edge of a table (c) next to the baby (d) in a busy doorway
30. 30.🔍 Which is the odd one out? (a) cooking oil (b) sugar (c) baking soda (d) table salt
31. 31.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
32. 32.True or false: baking a cake is a change that can be undone. (a) True (b) False
33. 33.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) a piece of string (c) salt (d) yeast
34. 34.True or false: a battery cell is needed for growing salt crystals. (a) True (b) False
35. 35.True or false: warm water is not needed for growing salt crystals. (a) True (b) False
36. 36.🧈 Which of these is a change that cannot be undone? (a) browning lemon ink (b) freezing water (c) folding paper (d) melting ice
37. 37.🧂 Which of these dissolves in water? (a) chalk powder (b) cooking oil (c) sugar (d) small pebbles
38. 38.🧂 Which of these dissolves in water? (a) small pebbles (b) sawdust (c) baking soda (d) cooking oil
39. 39.⚖️ 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
40. 40.🧂 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water

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