Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 758 · 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.🧂 Which of these does not dissolve in water? (a) small pebbles (b) glucose powder (c) food colour (d) sugar
2. 2.🔍 Which is the odd one out? (a) small pebbles (b) glucose powder (c) sugar (d) food colour
3. 3.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) yeast (b) a spoon (c) a piece of string (d) salt
4. 4.⚖️ 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 amount of water (b) the amount of salt (c) days to see crystals (d) the same dish
5. 5.🔮 Predict: you cover the dish so no water can escape. What happens? (a) crystals grow faster (b) it turns sweet (c) it fizzes (d) few or no crystals
6. 6.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) yeast (c) a battery cell (d) warm water
7. 7.True or false: cooking oil does not dissolve in water. (a) False (b) True
8. 8.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
9. 9.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a spoon (c) a battery cell (d) warm water
10. 10.🔮 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
11. 11.📘 What do we call a solution that cannot dissolve any more salt? (a) empty (b) magnetic (c) saturated (d) frozen
12. 12.🛟 Who should pour the warm water for the crystal experiment? (a) a friend who is running (b) a grown-up (c) nobody needs to (d) the youngest child
13. 13.True or false: salt is needed for growing salt crystals. (a) True (b) False
14. 14.🛟 Where should you keep the crystal dish while it dries? (a) safe from small children (b) next to the baby (c) on the edge of a table (d) in a busy doorway
15. 15.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) folding paper (c) melting ice (d) baking a cake
16. 16.🧺 Do we need yeast for growing salt crystals? (a) needed (b) not needed
17. 17.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
18. 18.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) warm water (c) yeast (d) a spoon
19. 19.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) melting ice (c) folding paper (d) cooking an egg
20. 20.🧈 Can this change be undone: folding paper? (a) can be undone (b) cannot be undone
21. 21.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a balloon (c) a piece of string (d) salt
22. 22.🔍 Which is the odd one out? (a) chalk powder (b) sugar (c) food colour (d) baking soda
23. 23.True or false: folding paper is a change that can be undone. (a) False (b) True
24. 24.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) salt (c) a mirror (d) warm water
25. 25.True or false: freezing water is a change that can be undone. (a) True (b) False
26. 26.⚖️ 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
27. 27.🧈 Can this change be undone: rusting iron? (a) can be undone (b) cannot be undone
28. 28.True or false: glucose powder does not dissolve in water. (a) True (b) False
29. 29.🧂 Why do crystals appear as the dish dries? (a) the dish melts (b) salt eats water (c) salt grows roots (d) water evaporates
30. 30.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
31. 31.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a shallow dish (c) a magnet (d) a spoon
32. 32.🧺 Do we need warm water for growing salt crystals? (a) needed (b) not needed
33. 33.⚖️ 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
34. 34.🧺 Do we need a magnet for growing salt crystals? (a) needed (b) not needed
35. 35.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is the one thing we change. (a) False (b) True
36. 36.⚖️ 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 measure it (b) we keep it the same (c) we change it
37. 37.🔍 Which is the odd one out? (a) sawdust (b) small pebbles (c) sugar (d) chalk powder
38. 38.🌊 How is salt made in salt pans by the sea? (a) sea water evaporates (b) salt rains down (c) fish make it (d) sand is ground up
39. 39.🔍 Which is the odd one out? (a) small pebbles (b) sand (c) chalk powder (d) food colour
40. 40.True or false: dissolving salt is a change that cannot be undone. (a) True (b) False

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