Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 307 · 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) a spoon (b) a piece of string (c) salt (d) a magnet
2. 2.🧂 Why do crystals appear as the dish dries? (a) the dish melts (b) salt eats water (c) salt grows roots (d) water evaporates
3. 3.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a shallow dish (c) warm water (d) a mirror
4. 4.🔮 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
5. 5.🛟 Where should you keep the crystal dish while it dries? (a) safe from small children (b) in a busy doorway (c) next to the baby (d) on the edge of a table
6. 6.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) warm water (c) a magnet (d) a spoon
7. 7.🔍 Which is the odd one out? (a) sugar (b) table salt (c) cooking oil (d) baking soda
8. 8.True or false: browning lemon ink is a change that can be undone. (a) False (b) True
9. 9.⚖️ 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
10. 10.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
11. 11.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) baking a cake (c) freezing water (d) folding paper
12. 12.🔍 Which is the odd one out? (a) sawdust (b) cooking oil (c) small pebbles (d) baking soda
13. 13.⚖️ 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
14. 14.🧈 Which of these is a change that can be undone? (a) freezing water (b) cooking an egg (c) browning lemon ink (d) rusting iron
15. 15.⚖️ 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
16. 16.⚖️ 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) True (b) False
17. 17.🧂 Which of these dissolves in water? (a) food colour (b) small pebbles (c) chalk powder (d) sand
18. 18.⚖️ 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) the amount of salt (b) sunny or shady place (c) the same dish (d) the amount of water
19. 19.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
20. 20.📘 What do we call a solution that cannot dissolve any more salt? (a) empty (b) frozen (c) saturated (d) magnetic
21. 21.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) yeast (c) salt (d) a spoon
22. 22.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) smaller crystals (b) bigger crystals (c) no crystals (d) liquid crystals
23. 23.🧂 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
24. 24.True or false: small pebbles dissolves in water. (a) True (b) False
25. 25.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is the one thing we change. (a) False (b) True
26. 26.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) salt (c) a shallow dish (d) turmeric powder
27. 27.🧂 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
28. 28.🧈 Can this change be undone: melting butter? (a) can be undone (b) cannot be undone
29. 29.🧺 Which of these is needed for growing salt crystals? (a) a shallow dish (b) turmeric powder (c) a battery cell (d) a mirror
30. 30.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
31. 31.⚖️ 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
32. 32.True or false: sawdust does not dissolve in water. (a) True (b) False
33. 33.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) melting butter (c) cooking an egg (d) melting ice
34. 34.🛟 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
35. 35.🧂 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
36. 36.True or false: a spoon is needed for growing salt crystals. (a) True (b) False
37. 37.True or false: sugar dissolves in water. (a) True (b) False
38. 38.True or false: cooking oil does not dissolve in water. (a) True (b) False
39. 39.True or false: salt is needed for growing salt crystals. (a) False (b) True
40. 40.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “days to see crystals”? (a) we change it (b) we keep it the same (c) we measure it

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