Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 743 · 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.True or false: baking soda dissolves in water. (a) True (b) False
2. 2.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
3. 3.🧈 Which of these is a change that can be undone? (a) baking a cake (b) milk turning to curd (c) cooking an egg (d) folding paper
4. 4.True or false: warm water is not needed for growing salt crystals. (a) True (b) False
5. 5.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a battery cell (b) salt (c) warm water (d) a shallow dish
6. 6.🧂 Why do crystals appear as the dish dries? (a) salt grows roots (b) salt eats water (c) water evaporates (d) the dish melts
7. 7.🧂 Which of these does not dissolve in water? (a) glucose powder (b) chalk powder (c) food colour (d) sugar
8. 8.⚖️ 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
9. 9.True or false: food colour does not dissolve in water. (a) True (b) False
10. 10.⚖️ 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 same dish (b) sunny or shady place (c) the amount of water (d) days to see crystals
11. 11.⚖️ 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) the kind of salt (c) sunny or shady place
12. 12.🧂 Which of these dissolves in water? (a) sand (b) table salt (c) chalk powder (d) cooking oil
13. 13.🧺 Do we need a spoon for growing salt crystals? (a) not needed (b) needed
14. 14.🔍 Which is the odd one out? (a) baking soda (b) table salt (c) food colour (d) small pebbles
15. 15.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
16. 16.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) salt (c) a balloon (d) warm water
17. 17.🔍 Which is the odd one out? (a) table salt (b) baking soda (c) sawdust (d) glucose powder
18. 18.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) a magnet (c) a piece of string (d) a balloon
19. 19.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a spoon (c) warm water (d) a magnet
20. 20.True or false: baking a cake is a change that cannot be undone. (a) False (b) True
21. 21.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
22. 22.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny cubes (b) tiny stars (c) tiny spheres (d) tiny triangles
23. 23.🧂 Which of these dissolves in water? (a) food colour (b) sand (c) small pebbles (d) sawdust
24. 24.🌊 How is salt made in salt pans by the sea? (a) salt rains down (b) sand is ground up (c) fish make it (d) sea water evaporates
25. 25.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) baking a cake (c) dissolving salt (d) freezing water
26. 26.🔮 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
27. 27.🧈 Can this change be undone: rusting iron? (a) can be undone (b) cannot be undone
28. 28.True or false: warm water is needed for growing salt crystals. (a) False (b) True
29. 29.🧂 Which of these dissolves in water? (a) baking soda (b) sand (c) chalk powder (d) small pebbles
30. 30.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it turns sweet (b) it fizzes (c) few or no crystals (d) crystals grow faster
31. 31.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) in a busy doorway (c) on the edge of a table (d) safe from small children
32. 32.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is kept the same. (a) True (b) False
33. 33.🧂 Which of these does not dissolve in water? (a) small pebbles (b) food colour (c) baking soda (d) sugar
34. 34.🔍 Which is the odd one out? (a) sawdust (b) food colour (c) sand (d) cooking oil
35. 35.🧈 Which of these is a change that cannot be undone? (a) cooking an egg (b) folding paper (c) melting ice (d) dissolving salt
36. 36.True or false: melting ice is a change that cannot be undone. (a) False (b) True
37. 37.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) salt (c) a shallow dish (d) turmeric powder
38. 38.🔍 Which is the odd one out? (a) sand (b) table salt (c) small pebbles (d) chalk powder
39. 39.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a balloon (c) a piece of string (d) warm water
40. 40.🧂 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water

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