Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 693 · 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.⚖️ 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
2. 2.True or false: melting ice is a change that can be undone. (a) False (b) True
3. 3.🧂 Which of these does not dissolve in water? (a) food colour (b) small pebbles (c) table salt (d) sugar
4. 4.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a spoon (c) turmeric powder (d) a shallow dish
5. 5.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) freezing water (c) cooking an egg (d) folding paper
6. 6.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
7. 7.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to butter (b) it turns to oil (c) salt crystals form (d) sugar crystals form
8. 8.🧂 Which of these dissolves in water? (a) sand (b) chalk powder (c) sugar (d) cooking oil
9. 9.🧂 Does glucose powder dissolve in water? (a) dissolves in water (b) does not dissolve
10. 10.True or false: rusting iron is a change that can be undone. (a) False (b) True
11. 11.True or false: salt is needed for growing salt crystals. (a) False (b) True
12. 12.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) dissolving salt (c) browning lemon ink (d) folding paper
13. 13.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
14. 14.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) a battery cell (c) a piece of string (d) a magnet
15. 15.🧺 Do we need a magnet for growing salt crystals? (a) needed (b) not needed
16. 16.🛟 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
17. 17.🧺 Do we need a balloon for growing salt crystals? (a) not needed (b) needed
18. 18.🧂 Which of these does not dissolve in water? (a) baking soda (b) food colour (c) cooking oil (d) glucose powder
19. 19.🧈 Which of these is a change that can be undone? (a) freezing water (b) baking a cake (c) rusting iron (d) cooking an egg
20. 20.🧂 Which of these dissolves in water? (a) chalk powder (b) small pebbles (c) glucose powder (d) cooking oil
21. 21.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) melting butter (c) rusting iron (d) cooking an egg
22. 22.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) warm water (c) yeast (d) salt
23. 23.🧂 Which of these does not dissolve in water? (a) food colour (b) sugar (c) sawdust (d) table salt
24. 24.🛟 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
25. 25.⚖️ 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) sunny or shady place (b) the amount of water (c) the kind of salt (d) the amount of salt
26. 26.⚖️ 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 change it (b) we keep it the same (c) we measure it
27. 27.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
28. 28.📘 What do we call a solution that cannot dissolve any more salt? (a) magnetic (b) empty (c) saturated (d) frozen
29. 29.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a mirror (b) a spoon (c) a piece of string (d) salt
30. 30.🧈 Can this change be undone: freezing water? (a) can be undone (b) cannot be undone
31. 31.True or false: sawdust dissolves in water. (a) True (b) False
32. 32.True or false: warm water is not needed for growing salt crystals. (a) False (b) True
33. 33.🧺 Do we need yeast for growing salt crystals? (a) needed (b) not needed
34. 34.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
35. 35.🧺 Do we need a piece of string for growing salt crystals? (a) needed (b) not needed
36. 36.True or false: chalk powder dissolves in water. (a) True (b) False
37. 37.⚖️ 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
38. 38.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a spoon (c) a balloon (d) a mirror
39. 39.🔍 Which is the odd one out? (a) sand (b) chalk powder (c) table salt (d) small pebbles
40. 40.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the amount of water”? (a) we measure it (b) we keep it the same (c) we change it

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