Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 677 · 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: days to see crystals is what we measure. (a) False (b) True
2. 2.⚖️ 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 measure it (b) we keep it the same (c) we change it
3. 3.🛟 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
4. 4.True or false: salt is not needed for growing salt crystals. (a) True (b) False
5. 5.⚖️ 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
6. 6.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) a balloon (c) a spoon (d) turmeric powder
7. 7.🧂 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
8. 8.🧺 Do we need a balloon for growing salt crystals? (a) not needed (b) needed
9. 9.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny triangles (b) tiny spheres (c) tiny stars (d) tiny cubes
10. 10.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a magnet (c) a piece of string (d) warm water
11. 11.🧺 Which of these is not needed for growing salt crystals? (a) yeast (b) a spoon (c) salt (d) a piece of string
12. 12.True or false: baking soda dissolves in water. (a) False (b) True
13. 13.🧺 Which of these is not needed for growing salt crystals? (a) a magnet (b) warm water (c) salt (d) a shallow dish
14. 14.🔮 Predict: you cover the dish so no water can escape. What happens? (a) crystals grow faster (b) few or no crystals (c) it turns sweet (d) it fizzes
15. 15.True or false: table salt dissolves in water. (a) False (b) True
16. 16.🧂 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
17. 17.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) salt (c) a battery cell (d) a magnet
18. 18.🔍 Which is the odd one out? (a) sawdust (b) glucose powder (c) table salt (d) food colour
19. 19.⚖️ 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) True (b) False
20. 20.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) in a busy doorway (c) safe from small children (d) on the edge of a table
21. 21.🔍 Which is the odd one out? (a) small pebbles (b) sugar (c) chalk powder (d) sawdust
22. 22.True or false: a piece of string is needed for growing salt crystals. (a) True (b) False
23. 23.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) a mirror (c) a shallow dish (d) a piece of string
24. 24.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) milk turning to curd (c) rusting iron (d) melting ice
25. 25.True or false: baking a cake is a change that can be undone. (a) True (b) False
26. 26.🧺 Do we need a battery cell for growing salt crystals? (a) not needed (b) needed
27. 27.🧺 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) salt
28. 28.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) rusting iron (c) melting ice (d) folding paper
29. 29.🌊 How is salt made in salt pans by the sea? (a) sand is ground up (b) sea water evaporates (c) fish make it (d) salt rains down
30. 30.🧂 Why do we stir in salt until no more will dissolve? (a) to make it fizz (b) to change its colour (c) to cool the water (d) to make it very salty
31. 31.🔍 Which is the odd one out? (a) food colour (b) table salt (c) glucose powder (d) small pebbles
32. 32.🧈 Can this change be undone: cooking an egg? (a) can be undone (b) cannot be undone
33. 33.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) the kind of salt (b) the amount of salt (c) sunny or shady place (d) days to see crystals
34. 34.🧈 Which of these is a change that can be undone? (a) rusting iron (b) cooking an egg (c) folding paper (d) baking a cake
35. 35.⚖️ 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 amount of salt
36. 36.True or false: melting butter is a change that can be undone. (a) False (b) True
37. 37.True or false: a mirror is needed for growing salt crystals. (a) True (b) False
38. 38.🧂 Which of these dissolves in water? (a) sand (b) cooking oil (c) sugar (d) chalk powder
39. 39.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) freezing water (c) cooking an egg (d) folding paper
40. 40.🔮 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

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