Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 751 · 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? Which of these is kept the same? (a) days to see crystals (b) sunny or shady place (c) the same dish
2. 2.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a spoon (c) salt (d) a magnet
3. 3.⚖️ 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
4. 4.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) nobody needs to (c) a grown-up (d) a friend who is running
5. 5.True or false: a shallow dish is not needed for growing salt crystals. (a) True (b) False
6. 6.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) on the edge of a table (c) next to the baby (d) safe from small children
7. 7.🧺 Do we need warm water for growing salt crystals? (a) needed (b) not needed
8. 8.🧂 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
9. 9.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny cubes (b) tiny spheres (c) tiny stars (d) tiny triangles
10. 10.🔍 Which is the odd one out? (a) food colour (b) chalk powder (c) baking soda (d) glucose powder
11. 11.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a piece of string (c) a balloon (d) a shallow dish
12. 12.True or false: freezing water is a change that cannot be undone. (a) False (b) True
13. 13.⚖️ 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 keep it the same (b) we measure it (c) we change it
14. 14.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is the one thing we change. (a) True (b) False
15. 15.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is what we measure. (a) True (b) False
16. 16.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a piece of string (c) a battery cell (d) salt
17. 17.⚖️ 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
18. 18.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is what we measure. (a) True (b) False
19. 19.True or false: chalk powder dissolves in water. (a) True (b) False
20. 20.🧺 Which of these is needed for growing salt crystals? (a) a shallow dish (b) a balloon (c) turmeric powder (d) a battery cell
21. 21.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) yeast (c) a shallow dish (d) warm water
22. 22.🧂 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
23. 23.⚖️ 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) days to see crystals (b) sunny or shady place (c) the kind of salt (d) the amount of salt
24. 24.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) bigger crystals (b) no crystals (c) smaller crystals (d) liquid crystals
25. 25.True or false: melting ice is a change that cannot be undone. (a) False (b) True
26. 26.🧂 Which of these dissolves in water? (a) small pebbles (b) cooking oil (c) chalk powder (d) baking soda
27. 27.True or false: a mirror is needed for growing salt crystals. (a) True (b) False
28. 28.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to oil (b) sugar crystals form (c) it turns to butter (d) salt crystals form
29. 29.🧈 Can this change be undone: melting butter? (a) can be undone (b) cannot be undone
30. 30.🔍 Which is the odd one out? (a) small pebbles (b) sawdust (c) sand (d) table salt
31. 31.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) a spoon (c) turmeric powder (d) a magnet
32. 32.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
33. 33.🧺 Which of these is needed for growing salt crystals? (a) a piece of string (b) a balloon (c) yeast (d) a magnet
34. 34.True or false: cooking an egg is a change that cannot be undone. (a) False (b) True
35. 35.🧂 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
36. 36.🔍 Which is the odd one out? (a) sand (b) sugar (c) sawdust (d) cooking oil
37. 37.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a battery cell (c) a shallow dish (d) a piece of string
38. 38.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is kept the same. (a) False (b) True
39. 39.True or false: baking soda dissolves in water. (a) False (b) True
40. 40.🧂 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve

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