Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 377 · 40 questions

What you do (Find the experiment, use the idea): 1. Read the question and find its experiment. 2. Use that experiment’s idea — acid and base, indicator colours, chemical change, what seeds and yeast need, transpiration, crystals or filtering. 3. For a fair-test question, find what is changed, kept the same and measured. 4. For a safety question, choose what keeps everyone safe.

1. 1.⚖️ Fair test — do seeds need water to sprout? What do we do with “the kind of seeds”? (a) we change it (b) we measure it (c) we keep it the same
2. 2.True or false: warm water is something yeast needs. (a) True (b) False
3. 3.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the same paper is kept the same. (a) True (b) False
4. 4.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns green (c) it turns blue (d) reddish-brown
5. 5.🍞 Which of these is something yeast needs? (a) time (b) sunlight (c) salt (d) vinegar
6. 6.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) it stays white (c) reddish-brown (d) green
7. 7.🧺 Do we need white paper for the secret lemon message? (a) not needed (b) needed
8. 8.📘 What do we call a solution that cannot dissolve any more salt? (a) saturated (b) frozen (c) empty (d) magnetic
9. 9.⚖️ Fair test — do seeds need water to sprout? Which of these is the one thing we change? (a) how many seeds sprout (b) the number of seeds (c) the same place (d) wet or dry cotton
10. 10.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the kind of plant is what we measure. (a) True (b) False
11. 11.True or false: water is not needed for sprouting seeds. (a) False (b) True
12. 12.🔮 Predict: you write with plain water instead of lemon juice. What appears after ironing? (a) almost nothing (b) dark brown words (c) blue words (d) a rainbow
13. 13.True or false: muddy water is needed for the muddy water filter. (a) True (b) False
14. 14.True or false: make seeds is a job of the leaves. (a) True (b) False
15. 15.🍞 Which of these is something yeast does not need? (a) time (b) warm water (c) sugar (d) salt
16. 16.🧺 Which of these is needed for making butter? (a) a battery cell (b) a magnet (c) a jar with a tight lid (d) a mirror
17. 17.🧈 Can this change be undone: baking a cake? (a) can be undone (b) cannot be undone
18. 18.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) detergent water (d) tamarind water
19. 19.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the water temperature”? (a) we measure it (b) we change it (c) we keep it the same
20. 20.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it turns sweet (b) crystals grow faster (c) few or no crystals (d) it fizzes
21. 21.🌱 Which of these does not sprout? (a) seeds on wet cotton (b) wet seeds in the dark (c) seeds on dry cotton (d) wet seeds by a window
22. 22.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) the salt (c) nothing (d) the mud
23. 23.True or false: a magnet is needed for the secret lemon message. (a) False (b) True
24. 24.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is kept the same? (a) time to make butter (b) how hard we shake (c) the cream temperature
25. 25.True or false: folding paper is a change that can be undone. (a) False (b) True
26. 26.🫧 Is sugar water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
27. 27.⚖️ 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
28. 28.🧈 Before the butter appears, what does the cream turn into? (a) ice (b) powder (c) clear water (d) thick whipped cream
29. 29.⚖️ 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
30. 30.🧈 Can this change be undone: cooking an egg? (a) can be undone (b) cannot be undone
31. 31.True or false: salt is not needed for a seed to sprout. (a) True (b) False
32. 32.🧺 Do we need sugar for the yeast balloon? (a) needed (b) not needed
33. 33.True or false: dissolving salt is a change that can be undone. (a) True (b) False
34. 34.🧺 Which of these is not needed for the leafy bag test? (a) a potted plant (b) a clear plastic bag (c) a magnet (d) a rubber band
35. 35.True or false: a funnel is needed for the muddy water filter. (a) False (b) True
36. 36.🔍 Which is the odd one out? (a) rusting iron (b) cooking an egg (c) milk turning to curd (d) dissolving salt
37. 37.🫧 Which of these is neutral? (a) baking soda water (b) soap solution (c) sugar water (d) orange juice
38. 38.🧺 Do we need turmeric powder for growing salt crystals? (a) needed (b) not needed
39. 39.🧂 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
40. 40.🫧 Is baking soda water an acid, a base or neutral? (a) neutral (b) a base (c) an acid

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