Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 166 · 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.🧺 Which of these is not needed for growing salt crystals? (a) a magnet (b) salt (c) a piece of string (d) warm water
2. 2.⚖️ 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) False (b) True
3. 3.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a mirror (c) salt (d) warm water
4. 4.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny stars (b) tiny triangles (c) tiny cubes (d) tiny spheres
5. 5.🧺 Do we need a battery cell for growing salt crystals? (a) needed (b) not needed
6. 6.🧺 Do we need a piece of string for growing salt crystals? (a) needed (b) not needed
7. 7.🧈 Can this change be undone: freezing water? (a) can be undone (b) cannot be undone
8. 8.True or false: a mirror is not needed for growing salt crystals. (a) False (b) True
9. 9.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a magnet (c) a spoon (d) salt
10. 10.🧺 Which of these is needed for growing salt crystals? (a) a piece of string (b) turmeric powder (c) a magnet (d) yeast
11. 11.🧂 Which of these dissolves in water? (a) table salt (b) sawdust (c) sand (d) small pebbles
12. 12.⚖️ 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 amount of salt (c) the amount of water (d) the same dish
13. 13.True or false: a magnet is not needed for growing salt crystals. (a) False (b) True
14. 14.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a battery cell (b) a shallow dish (c) warm water (d) a piece of string
15. 15.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) a friend who is running (c) a grown-up (d) nobody needs to
16. 16.🧈 Can this change be undone: melting ice? (a) can be undone (b) cannot be undone
17. 17.🧂 Which of these dissolves in water? (a) small pebbles (b) sand (c) sugar (d) sawdust
18. 18.🔮 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
19. 19.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a piece of string (c) a mirror (d) salt
20. 20.True or false: sugar does not dissolve in water. (a) True (b) False
21. 21.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a piece of string (c) a spoon (d) yeast
22. 22.🧂 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
23. 23.True or false: sugar dissolves in water. (a) False (b) True
24. 24.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) melting butter (c) cooking an egg (d) browning lemon ink
25. 25.🛟 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
26. 26.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) melting butter (c) browning lemon ink (d) dissolving salt
27. 27.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is what we measure. (a) False (b) True
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 keep it the same (b) we change it (c) we measure it
29. 29.True or false: sawdust dissolves in water. (a) False (b) True
30. 30.🔍 Which is the odd one out? (a) sawdust (b) baking soda (c) table salt (d) sugar
31. 31.True or false: a shallow dish is needed for growing salt crystals. (a) False (b) True
32. 32.📘 What do we call a solution that cannot dissolve any more salt? (a) magnetic (b) saturated (c) empty (d) frozen
33. 33.🧂 Why do we stir in salt until no more will dissolve? (a) to make it fizz (b) to change its colour (c) to make it very salty (d) to cool the water
34. 34.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a magnet (c) salt (d) a battery cell
35. 35.🧈 Can this change be undone: rusting iron? (a) cannot be undone (b) can be undone
36. 36.True or false: browning lemon ink is a change that can be undone. (a) True (b) False
37. 37.🔮 Predict: you cover the dish so no water can escape. What happens? (a) crystals grow faster (b) it fizzes (c) it turns sweet (d) few or no crystals
38. 38.🧂 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
39. 39.🔍 Which is the odd one out? (a) sand (b) chalk powder (c) food colour (d) cooking oil
40. 40.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) turmeric powder (b) a piece of string (c) warm water (d) a spoon

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