Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 187 · 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.True or false: sugar water is an acid. (a) False (b) True
2. 2.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a comb (c) turmeric powder (d) a battery cell
3. 3.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) lick your fingers (c) nothing is needed (d) wash hands afterwards
4. 4.🧺 Which of these is not needed for making butter? (a) a balloon (b) a jar with a tight lid (c) cold water to rinse (d) a timer
5. 5.🎈 What blows up the balloon in the yeast experiment? (a) smoke (b) air from outside (c) steam (d) carbon dioxide gas
6. 6.🧈 Why does shaking cream make butter? (a) fat bits stick together (b) the lid is warm (c) the jar adds butter (d) shaking adds salt
7. 7.True or false: sunlight is something yeast does not need. (a) False (b) True
8. 8.🧺 Do we need a balloon for growing salt crystals? (a) needed (b) not needed
9. 9.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a small bowl (b) a battery cell (c) a few days (d) moong seeds
10. 10.True or false: curd is neutral. (a) False (b) True
11. 11.True or false: yeast is not needed for the turmeric test. (a) True (b) False
12. 12.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) a grown-up (c) the youngest child (d) a friend who is running
13. 13.🧺 Do we need a magnet for the muddy water filter? (a) not needed (b) needed
14. 14.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
15. 15.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “the cream temperature”? (a) we keep it the same (b) we measure it (c) we change it
16. 16.True or false: gravel from fine sand is done by filtering. (a) True (b) False
17. 17.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is kept the same? (a) the kind of juice (b) how dark the writing is (c) the same paper
18. 18.🛟 How should the plastic bag be tied around the branch? (a) with sharp wire (b) with a hot glue gun (c) gently, not too tight (d) as tight as possible
19. 19.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a balloon (b) water (c) moong seeds (d) a small bowl
20. 20.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) an empty bottle (b) a tray for spills (c) sugar (d) baking soda
21. 21.🔍 Which is the odd one out? (a) vinegar (b) tamarind water (c) soap solution (d) lemon juice
22. 22.True or false: baking soda is needed for the fizzy balloon. (a) True (b) False
23. 23.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we keep it the same (b) we change it (c) we measure it
24. 24.True or false: tea leaves from tea is done by filtering. (a) True (b) False
25. 25.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a magnet (b) a rubber band (c) a clear plastic bag (d) a few hours
26. 26.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) turmeric powder (c) lemon juice (d) a comb
27. 27.🧺 Do we need lemon juice for the secret lemon message? (a) needed (b) not needed
28. 28.🍋 Which of these steps is a job a child can do? (a) cutting the lemon (b) plugging in the iron (c) ironing the paper (d) writing the message
29. 29.🛟 What should you do after touching soil or seeds? (a) rub your eyes (b) wash your hands (c) skip washing (d) lick your fingers
30. 30.🔍 Which is the odd one out? (a) water (b) soil (c) warmth (d) air
31. 31.True or false: make food in sunlight is a job of the stem. (a) True (b) False
32. 32.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) lemon juice (b) an adult with an iron (c) a cotton bud (d) a magnet
33. 33.🫧 Is orange juice an acid, a base or neutral? (a) neutral (b) a base (c) an acid
34. 34.🫗 How do we separate bran from wheat flour? (a) filtering (b) handpicking (c) sieving (d) winnowing
35. 35.⚖️ 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) the kind of salt (c) sunny or shady place (d) days to see crystals
36. 36.🧺 Which of these is not needed for the turmeric test? (a) water (b) lemon juice (c) a magnet (d) turmeric powder
37. 37.True or false: lemon juice is not needed for the turmeric test. (a) True (b) False
38. 38.True or false: a paper clip is needed for the yeast balloon. (a) True (b) False
39. 39.🛟 Who should use the hot iron in the secret message experiment? (a) only an adult (b) any child (c) whoever is fastest (d) the youngest child
40. 40.⚖️ 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 change it (b) we keep it the same (c) we measure it

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