Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 890 · 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.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) yeast (c) a piece of string (d) a shallow dish
2. 2.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) next to the baby (c) on the edge of a table (d) safe from small children
3. 3.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) turmeric powder (b) salt (c) a shallow dish (d) warm water
4. 4.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) sunny or shady place (b) the amount of salt (c) days to see crystals
5. 5.True or false: a magnet is not needed for growing salt crystals. (a) False (b) True
6. 6.🧈 Which of these is a change that can be undone? (a) folding paper (b) browning lemon ink (c) cooking an egg (d) baking a cake
7. 7.🧂 Why do we stir in salt until no more will dissolve? (a) to make it very salty (b) to make it fizz (c) to change its colour (d) to cool the water
8. 8.🧂 Which of these does not dissolve in water? (a) baking soda (b) small pebbles (c) sugar (d) table salt
9. 9.🧺 Do we need a balloon for growing salt crystals? (a) needed (b) not needed
10. 10.True or false: a balloon is needed for growing salt crystals. (a) True (b) False
11. 11.🌊 How is salt made in salt pans by the sea? (a) fish make it (b) salt rains down (c) sea water evaporates (d) sand is ground up
12. 12.🧂 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
13. 13.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a mirror (c) a spoon (d) yeast
14. 14.True or false: a spoon is not needed for growing salt crystals. (a) False (b) True
15. 15.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) cooking an egg (c) freezing water (d) dissolving salt
16. 16.⚖️ 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 measure it (c) we keep it the same
17. 17.🧺 Do we need turmeric powder for growing salt crystals? (a) needed (b) not needed
18. 18.🧂 Which of these does not dissolve in water? (a) sugar (b) glucose powder (c) chalk powder (d) table salt
19. 19.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) warm water (c) a magnet (d) turmeric powder
20. 20.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a battery cell (c) a shallow dish (d) a piece of string
21. 21.🔍 Which is the odd one out? (a) glucose powder (b) table salt (c) cooking oil (d) food colour
22. 22.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) days to see crystals (b) the amount of salt (c) the amount of water (d) the same dish
23. 23.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) yeast (c) warm water (d) a piece of string
24. 24.🔍 Which is the odd one out? (a) sand (b) cooking oil (c) glucose powder (d) small pebbles
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) days to see crystals (b) the same dish (c) the amount of water (d) sunny or shady place
26. 26.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny cubes (b) tiny stars (c) tiny spheres (d) tiny triangles
27. 27.🧈 Can this change be undone: rusting iron? (a) cannot be undone (b) can be undone
28. 28.⚖️ 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
29. 29.🧂 Which of these does not dissolve in water? (a) sugar (b) table salt (c) baking soda (d) sawdust
30. 30.🧂 Which of these dissolves in water? (a) sawdust (b) cooking oil (c) small pebbles (d) sugar
31. 31.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) the youngest child (c) a friend who is running (d) a grown-up
32. 32.True or false: dissolving salt is a change that can be undone. (a) True (b) False
33. 33.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
34. 34.🧺 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
35. 35.⚖️ 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 change it (b) we measure it (c) we keep it the same
36. 36.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) yeast (c) a piece of string (d) a battery cell
37. 37.🧂 Which of these dissolves in water? (a) glucose powder (b) chalk powder (c) cooking oil (d) sand
38. 38.True or false: cooking an egg is a change that cannot be undone. (a) True (b) False
39. 39.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) a piece of string (c) a battery cell (d) a spoon
40. 40.🧺 Do we need a spoon for growing salt crystals? (a) needed (b) not needed

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