Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 717 · 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.True or false: a mirror is not needed for growing salt crystals. (a) False (b) True
2. 2.⚖️ 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 kind of salt (c) sunny or shady place (d) days to see crystals
3. 3.⚖️ 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) True (b) False
4. 4.True or false: baking soda does not dissolve in water. (a) True (b) False
5. 5.🔍 Which is the odd one out? (a) table salt (b) sawdust (c) chalk powder (d) cooking oil
6. 6.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) days to see crystals (b) the amount of salt (c) sunny or shady place
7. 7.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) warm water (c) a battery cell (d) a piece of string
8. 8.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
9. 9.True or false: a balloon is not needed for growing salt crystals. (a) False (b) True
10. 10.🧂 Which of these dissolves in water? (a) cooking oil (b) sand (c) sugar (d) sawdust
11. 11.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
12. 12.🧈 Can this change be undone: freezing water? (a) can be undone (b) cannot be undone
13. 13.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) a mirror (c) a battery cell (d) a piece of string
14. 14.🔍 Which is the odd one out? (a) baking soda (b) table salt (c) food colour (d) sand
15. 15.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) warm water (c) a spoon (d) a magnet
16. 16.🔍 Which is the odd one out? (a) baking soda (b) sugar (c) sawdust (d) table salt
17. 17.True or false: baking a cake is a change that can be undone. (a) False (b) True
18. 18.True or false: a shallow dish is not needed for growing salt crystals. (a) False (b) True
19. 19.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
20. 20.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) smaller crystals (b) liquid crystals (c) bigger crystals (d) no crystals
21. 21.🧈 Which of these is a change that cannot be undone? (a) rusting iron (b) folding paper (c) dissolving salt (d) melting ice
22. 22.⚖️ 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 keep it the same (b) we change it (c) we measure it
23. 23.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) browning lemon ink (c) dissolving salt (d) baking a cake
24. 24.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny spheres (b) tiny stars (c) tiny triangles (d) tiny cubes
25. 25.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) next to the baby (c) in a busy doorway (d) safe from small children
26. 26.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
27. 27.🧈 Which of these is a change that can be undone? (a) rusting iron (b) melting ice (c) milk turning to curd (d) cooking an egg
28. 28.True or false: cooking an egg is a change that can be undone. (a) False (b) True
29. 29.🔮 Predict: you cover the dish so no water can escape. What happens? (a) few or no crystals (b) it fizzes (c) crystals grow faster (d) it turns sweet
30. 30.🧂 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
31. 31.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) turmeric powder (c) warm water (d) a mirror
32. 32.True or false: food colour dissolves in water. (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) warm water (d) a magnet
34. 34.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is what we measure. (a) False (b) True
35. 35.🧂 Which of these dissolves in water? (a) chalk powder (b) small pebbles (c) glucose powder (d) sawdust
36. 36.True or false: salt is needed for growing salt crystals. (a) False (b) True
37. 37.True or false: a battery cell is not needed for growing salt crystals. (a) False (b) True
38. 38.⚖️ 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 amount of water
39. 39.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) freezing water (c) dissolving salt (d) baking a cake
40. 40.🧈 Can this change be undone: rusting iron? (a) cannot be undone (b) can be undone

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