Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 881 · 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 balloon is needed for growing salt crystals. (a) False (b) True
2. 2.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a balloon (c) a spoon (d) a magnet
3. 3.True or false: a piece of string is needed for growing salt crystals. (a) True (b) False
4. 4.True or false: melting butter is a change that can be undone. (a) True (b) False
5. 5.🧈 Can this change be undone: folding paper? (a) cannot be undone (b) can be undone
6. 6.🧈 Which of these is a change that can be undone? (a) dissolving salt (b) cooking an egg (c) browning lemon ink (d) baking a cake
7. 7.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) a spoon (c) a mirror (d) warm water
8. 8.⚖️ 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) sunny or shady place (c) the same dish
9. 9.🔍 Which is the odd one out? (a) small pebbles (b) chalk powder (c) table salt (d) sawdust
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 change it (b) we measure it (c) we keep it the same
11. 11.🧺 Do we need a battery cell for growing salt crystals? (a) needed (b) not needed
12. 12.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) few or no crystals (c) crystals grow faster (d) it turns sweet
13. 13.🧺 Do we need turmeric powder for growing salt crystals? (a) needed (b) not needed
14. 14.🧂 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
15. 15.🧂 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
16. 16.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to butter (b) sugar crystals form (c) salt crystals form (d) it turns to oil
17. 17.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a magnet (c) salt (d) a piece of string
18. 18.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) the youngest child (c) a grown-up (d) a friend who is running
19. 19.True or false: a shallow dish is needed for growing salt crystals. (a) True (b) False
20. 20.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a balloon (c) salt (d) warm water
21. 21.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) browning lemon ink (c) folding paper (d) melting butter
22. 22.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) salt (c) turmeric powder (d) warm water
23. 23.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is kept the same. (a) False (b) True
24. 24.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a spoon (c) a battery cell (d) a shallow dish
25. 25.⚖️ 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) True (b) False
26. 26.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) warm water (c) a battery cell (d) a mirror
27. 27.True or false: cooking an egg is a change that can be undone. (a) True (b) False
28. 28.🧺 Do we need a piece of string for growing salt crystals? (a) needed (b) not needed
29. 29.True or false: melting ice is a change that cannot be undone. (a) True (b) False
30. 30.🧈 Can this change be undone: cooking an egg? (a) cannot be undone (b) can be undone
31. 31.🧂 Why do crystals appear as the dish dries? (a) salt eats water (b) water evaporates (c) the dish melts (d) salt grows roots
32. 32.📘 What do we call a solution that cannot dissolve any more salt? (a) empty (b) frozen (c) saturated (d) magnetic
33. 33.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) in a busy doorway (c) on the edge of a table (d) safe from small children
34. 34.🧂 Why do we stir in salt until no more will dissolve? (a) to make it fizz (b) to make it very salty (c) to change its colour (d) to cool the water
35. 35.True or false: a magnet is needed for growing salt crystals. (a) True (b) False
36. 36.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
37. 37.🧂 Which of these dissolves in water? (a) cooking oil (b) chalk powder (c) sand (d) sugar
38. 38.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a piece of string (c) yeast (d) a mirror
39. 39.🧈 Can this change be undone: milk turning to curd? (a) cannot be undone (b) can be undone
40. 40.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a mirror (b) a spoon (c) a shallow dish (d) salt

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