Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 317 · 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.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) a friend who is running (c) nobody needs to (d) a grown-up
2. 2.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) cooking an egg (c) rusting iron (d) dissolving salt
3. 3.🧂 Which of these dissolves in water? (a) cooking oil (b) table salt (c) small pebbles (d) chalk powder
4. 4.🔍 Which is the odd one out? (a) chalk powder (b) cooking oil (c) baking soda (d) sand
5. 5.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the same dish”? (a) we change it (b) we keep it the same (c) we measure it
6. 6.🧂 Which of these dissolves in water? (a) food colour (b) sawdust (c) sand (d) small pebbles
7. 7.🧺 Which of these is needed for growing salt crystals? (a) a shallow dish (b) a magnet (c) a balloon (d) a mirror
8. 8.🧺 Which of these is not needed for growing salt crystals? (a) a balloon (b) salt (c) a spoon (d) a shallow dish
9. 9.🔍 Which is the odd one out? (a) sugar (b) chalk powder (c) sand (d) cooking oil
10. 10.🔍 Which is the odd one out? (a) sawdust (b) glucose powder (c) sand (d) small pebbles
11. 11.⚖️ 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 change it (c) we keep it the same
12. 12.🛟 Where should you keep the crystal dish while it dries? (a) safe from small children (b) next to the baby (c) on the edge of a table (d) in a busy doorway
13. 13.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a magnet (c) a balloon (d) a piece of string
14. 14.🧺 Do we need a mirror for growing salt crystals? (a) not needed (b) needed
15. 15.True or false: a piece of string is needed for growing salt crystals. (a) True (b) False
16. 16.⚖️ 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 amount of salt (b) days to see crystals (c) the kind of salt (d) sunny or shady place
17. 17.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) salt (c) warm water (d) a battery cell
18. 18.🧂 Which of these dissolves in water? (a) sawdust (b) cooking oil (c) baking soda (d) small pebbles
19. 19.🧂 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
20. 20.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to butter (b) salt crystals form (c) it turns to oil (d) sugar crystals form
21. 21.True or false: a mirror is needed for growing salt crystals. (a) False (b) True
22. 22.🧂 Why do we stir in salt until no more will dissolve? (a) to change its colour (b) to make it fizz (c) to cool the water (d) to make it very salty
23. 23.True or false: sugar dissolves in water. (a) True (b) False
24. 24.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a spoon (c) a shallow dish (d) turmeric powder
25. 25.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a mirror (b) salt (c) a spoon (d) a piece of string
26. 26.True or false: browning lemon ink is a change that can be undone. (a) True (b) False
27. 27.🧂 Which of these does not dissolve in water? (a) sand (b) sugar (c) glucose powder (d) baking soda
28. 28.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
29. 29.⚖️ 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 same dish (c) days to see crystals (d) the kind of salt
30. 30.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) warm water (c) a piece of string (d) a mirror
31. 31.⚖️ 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
32. 32.⚖️ 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 kind of salt (c) days to see crystals
33. 33.True or false: small pebbles dissolves in water. (a) False (b) True
34. 34.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) liquid crystals (c) smaller crystals (d) bigger crystals
35. 35.⚖️ 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) True (b) False
36. 36.📘 What do we call a solution that cannot dissolve any more salt? (a) magnetic (b) empty (c) saturated (d) frozen
37. 37.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is kept the same. (a) False (b) True
38. 38.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) crystals grow faster (c) few or no crystals (d) it turns sweet
39. 39.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is kept the same. (a) True (b) False
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 change it (b) we measure it (c) we keep it the same

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids