Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 708 · 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 mirror is not needed for growing salt crystals. (a) True (b) False
2. 2.⚖️ 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
3. 3.🧈 Can this change be undone: cooking an egg? (a) can be undone (b) cannot be undone
4. 4.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
5. 5.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is the one thing we change. (a) True (b) False
6. 6.🧂 Which of these dissolves in water? (a) sand (b) baking soda (c) small pebbles (d) cooking oil
7. 7.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
8. 8.🧂 Which of these does not dissolve in water? (a) table salt (b) sawdust (c) food colour (d) glucose powder
9. 9.True or false: sugar dissolves in water. (a) False (b) True
10. 10.🔍 Which is the odd one out? (a) sand (b) small pebbles (c) baking soda (d) cooking oil
11. 11.🔍 Which is the odd one out? (a) cooking oil (b) sand (c) sawdust (d) table salt
12. 12.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a balloon (c) a spoon (d) warm water
13. 13.True or false: yeast is needed for growing salt crystals. (a) False (b) True
14. 14.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) melting butter (c) cooking an egg (d) freezing water
15. 15.🛟 Who should pour the warm water for the crystal experiment? (a) a grown-up (b) a friend who is running (c) nobody needs to (d) the youngest child
16. 16.True or false: melting ice is a change that cannot be undone. (a) False (b) True
17. 17.📘 What do we call a solution that cannot dissolve any more salt? (a) frozen (b) magnetic (c) empty (d) saturated
18. 18.True or false: a battery cell is not needed for growing salt crystals. (a) False (b) True
19. 19.True or false: a piece of string is not needed for growing salt crystals. (a) False (b) True
20. 20.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) a spoon (c) a piece of string (d) a magnet
21. 21.True or false: a shallow dish is not needed for growing salt crystals. (a) False (b) True
22. 22.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) warm water (c) a mirror (d) a spoon
23. 23.True or false: dissolving salt is a change that can be undone. (a) True (b) False
24. 24.🧂 Which of these does not dissolve in water? (a) sand (b) baking soda (c) table salt (d) food colour
25. 25.⚖️ 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) the amount of water (c) sunny or shady place
26. 26.🔍 Which is the odd one out? (a) chalk powder (b) food colour (c) small pebbles (d) sawdust
27. 27.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
28. 28.True or false: baking a cake is a change that cannot be undone. (a) False (b) True
29. 29.⚖️ 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) the amount of salt (c) the amount of water (d) days to see crystals
30. 30.🔮 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
31. 31.🧂 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
32. 32.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) warm water (c) turmeric powder (d) a piece of string
33. 33.🔮 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
34. 34.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) warm water (c) a battery cell (d) a piece of string
35. 35.🔍 Which is the odd one out? (a) table salt (b) sugar (c) small pebbles (d) glucose powder
36. 36.🛟 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
37. 37.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) yeast (c) a magnet (d) a shallow dish
38. 38.🧈 Can this change be undone: melting butter? (a) can be undone (b) cannot be undone
39. 39.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny cubes (b) tiny stars (c) tiny spheres (d) tiny triangles
40. 40.🧂 Why do crystals appear as the dish dries? (a) salt grows roots (b) salt eats water (c) the dish melts (d) water evaporates

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