Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 637 · 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.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a magnet (b) salt (c) a spoon (d) warm water
2. 2.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a spoon (c) a magnet (d) a piece of string
3. 3.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
4. 4.⚖️ 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 measure it (b) we keep it the same (c) we change it
5. 5.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a piece of string (c) yeast (d) a spoon
6. 6.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
7. 7.🛟 Who should pour the warm water for the crystal experiment? (a) a friend who is running (b) nobody needs to (c) a grown-up (d) the youngest child
8. 8.🧺 Do we need a balloon for growing salt crystals? (a) not needed (b) needed
9. 9.🧈 Can this change be undone: browning lemon ink? (a) can be undone (b) cannot be undone
10. 10.⚖️ 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
11. 11.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
12. 12.🧂 Which of these dissolves in water? (a) baking soda (b) chalk powder (c) small pebbles (d) sand
13. 13.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) freezing water (c) melting ice (d) milk turning to curd
14. 14.🧂 Which of these does not dissolve in water? (a) baking soda (b) food colour (c) glucose powder (d) chalk powder
15. 15.⚖️ 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
16. 16.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a balloon (b) a piece of string (c) a shallow dish (d) salt
17. 17.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) next to the baby (c) safe from small children (d) in a busy doorway
18. 18.🌊 How is salt made in salt pans by the sea? (a) sand is ground up (b) fish make it (c) sea water evaporates (d) salt rains down
19. 19.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) a battery cell (c) yeast (d) salt
20. 20.True or false: yeast is needed for growing salt crystals. (a) False (b) True
21. 21.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) a magnet (c) a shallow dish (d) yeast
22. 22.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a battery cell (c) a shallow dish (d) warm water
23. 23.🧂 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
24. 24.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to butter (b) it turns to oil (c) sugar crystals form (d) salt crystals form
25. 25.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) sunny or shady place (b) days to see crystals (c) the same dish (d) the amount of water
26. 26.🧺 Which of these is needed for growing salt crystals? (a) a spoon (b) a mirror (c) yeast (d) a magnet
27. 27.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny stars (b) tiny triangles (c) tiny spheres (d) tiny cubes
28. 28.🧈 Which of these is a change that cannot be undone? (a) rusting iron (b) folding paper (c) freezing water (d) melting ice
29. 29.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is what we measure. (a) False (b) True
30. 30.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) bigger crystals (b) liquid crystals (c) smaller crystals (d) no crystals
31. 31.True or false: cooking oil dissolves in water. (a) True (b) False
32. 32.🧺 Do we need a piece of string for growing salt crystals? (a) not needed (b) needed
33. 33.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
34. 34.🧂 Which of these does not dissolve in water? (a) food colour (b) table salt (c) sand (d) glucose powder
35. 35.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) rusting iron (c) folding paper (d) browning lemon ink
36. 36.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it turns sweet (b) crystals grow faster (c) few or no crystals (d) it fizzes
37. 37.🧈 Can this change be undone: cooking an egg? (a) cannot be undone (b) can be undone
38. 38.⚖️ 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) True (b) False
39. 39.🧺 Do we need a spoon for growing salt crystals? (a) not needed (b) needed
40. 40.🧂 Which of these dissolves in water? (a) sawdust (b) sand (c) cooking oil (d) food colour

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