Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 413 · 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.🧺 Which of these is needed for making butter? (a) a balloon (b) a battery cell (c) cold water to rinse (d) a mirror
2. 2.🧺 Which of these is needed for the fizzy balloon? (a) a mirror (b) sugar (c) a comb (d) a funnel or spoon
3. 3.🔍 Which is the odd one out? (a) cutting the lemon (b) ironing the paper (c) putting the iron away (d) writing the message
4. 4.🛟 Why is a plastic jar a good choice for shaking? (a) it is magnetic (b) it will not break (c) it is hotter (d) it is heavier
5. 5.🛟 The water for the yeast should be ___. (a) boiling hot (b) very salty (c) ice cold (d) warm, not hot
6. 6.True or false: a balloon is not needed for growing salt crystals. (a) False (b) True
7. 7.True or false: curd is a base. (a) False (b) True
8. 8.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the same paper is what we measure. (a) True (b) False
9. 9.True or false: plugging in the iron is a job for an adult. (a) True (b) False
10. 10.🫧 Which of these is neutral? (a) plain water (b) orange juice (c) vinegar (d) lemon juice
11. 11.True or false: a balloon is needed for the turmeric test. (a) True (b) False
12. 12.🍋 Secret message: who does this step — plugging in the iron? (a) a child can do it (b) an adult does it
13. 13.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it flowers more (b) it wilts and droops (c) it grows faster (d) it turns blue
14. 14.🔍 Which is the odd one out? (a) time (b) salt (c) warm water (d) sugar
15. 15.🔮 Predict: you tie a bag on a branch with no leaves. Will it collect much water? (a) much more water (b) exactly the same (c) much less water (d) it fills with soil
16. 16.🧺 Which of these is needed for the yeast balloon? (a) a magnet (b) warm water (c) a paper clip (d) a comb
17. 17.🧺 Do we need yeast for making butter? (a) not needed (b) needed
18. 18.🧺 Which of these is not needed for the secret lemon message? (a) a small bowl (b) a balloon (c) an adult with an iron (d) white paper
19. 19.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is kept the same? (a) the water temperature (b) size of the balloon (c) the amount of water
20. 20.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we measure it (b) we change it (c) we keep it the same
21. 21.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) the kind of salt (b) days to see crystals (c) the same dish (d) the amount of salt
22. 22.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) dry yeast (b) sugar (c) warm water (d) a paper clip
23. 23.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we change it (b) we measure it (c) we keep it the same
24. 24.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is the one thing we change? (a) how dark the writing is (b) the same cotton bud (c) the same paper (d) the kind of juice
25. 25.🫧 Which of these is an acid? (a) plain water (b) baking soda water (c) tamarind water (d) sugar water
26. 26.True or false: folding paper is a change that cannot be undone. (a) True (b) False
27. 27.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
28. 28.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a comb (b) a dropper or spoon (c) lemon juice (d) turmeric powder
29. 29.🧺 Which of these is needed for the secret lemon message? (a) a magnet (b) a balloon (c) lemon juice (d) yeast
30. 30.True or false: salt is needed for a seed to sprout. (a) True (b) False
31. 31.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is kept the same? (a) size of the balloon (b) the water temperature (c) the amount of yeast
32. 32.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sand (b) it turns to sugar (c) yes, all of it (d) no, salt passes through
33. 33.🛟 Some seeds from shops are coated with chemicals. What is the safe rule? (a) throw them at friends (b) feed them to pets (c) never put seeds in mouth (d) eat a few to check
34. 34.🧺 Do we need turmeric powder for the leafy bag test? (a) not needed (b) needed
35. 35.🧺 Which of these is needed for the fizzy balloon? (a) baking soda (b) a seed (c) a magnet (d) a battery cell
36. 36.🧺 Do we need white paper for the secret lemon message? (a) not needed (b) needed
37. 37.🧺 Do we need an empty bottle for the fizzy balloon? (a) needed (b) not needed
38. 38.🧺 Do we need a funnel or spoon for the fizzy balloon? (a) not needed (b) needed
39. 39.🧂 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
40. 40.🫧 Is orange juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base

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