Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 338 · 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.🧺 Do we need sugar for the fizzy balloon? (a) needed (b) not needed
2. 2.🔍 Which is the odd one out? (a) sunlight (b) water (c) soil (d) salt
3. 3.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) salty (c) clearer (d) hot
4. 4.🫧 Is baking soda water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
5. 5.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is kept the same. (a) True (b) False
6. 6.🔮 Predict: you stop shaking after only one minute. What do you have? (a) ghee (b) cheese (c) butter lumps (d) still runny cream
7. 7.🫧 Which of these is an acid? (a) baking soda water (b) soap solution (c) vinegar (d) plain water
8. 8.🪴 Which part of a plant does this job: take in water from soil? (a) stem (b) roots (c) leaves (d) flower
9. 9.🧺 Which of these is needed for making butter? (a) yeast (b) a bowl (c) a magnet (d) turmeric powder
10. 10.🔮 Predict: you use plain water instead of vinegar. What happens? (a) it turns to honey (b) the balloon bursts (c) very little fizzing (d) a huge eruption
11. 11.⚖️ Fair test — do seeds need water to sprout? Which of these is kept the same? (a) wet or dry cotton (b) the same place (c) how many seeds sprout
12. 12.True or false: lemon juice is a base. (a) True (b) False
13. 13.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is kept the same. (a) True (b) False
14. 14.🌱 Is water needed for a seed to sprout? (a) needed to sprout (b) not needed to sprout
15. 15.🔍 Which is the odd one out? (a) salt (b) warmth (c) sugar (d) soil
16. 16.🌱 Will these sprout: seeds on wet cotton? (a) sprouts (b) does not sprout
17. 17.🍞 Which of these is something yeast needs? (a) vinegar (b) sunlight (c) time (d) salt
18. 18.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
19. 19.🫗 How do we separate tea leaves from tea? (a) evaporating (b) sieving (c) filtering (d) handpicking
20. 20.True or false: a battery cell is needed for the secret lemon message. (a) False (b) True
21. 21.🍋 Secret message: who does this step — putting the iron away? (a) a child can do it (b) an adult does it
22. 22.🛟 What should you do if vinegar splashes in your eye? (a) ignore it (b) rinse with clean water (c) rub it hard (d) add baking soda
23. 23.True or false: a mirror is not needed for the yeast balloon. (a) False (b) True
24. 24.🧈 Why does shaking cream make butter? (a) shaking adds salt (b) fat bits stick together (c) the lid is warm (d) the jar adds butter
25. 25.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
26. 26.🛟 Some seeds from shops are coated with chemicals. What is the safe rule? (a) throw them at friends (b) never put seeds in mouth (c) feed them to pets (d) eat a few to check
27. 27.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) soap solution (c) sugar water (d) lemon juice
28. 28.🧺 Do we need a mirror for making butter? (a) not needed (b) needed
29. 29.🧺 Do we need yeast for making butter? (a) not needed (b) needed
30. 30.🔍 Which is the odd one out? (a) lemon juice (b) orange juice (c) curd (d) baking soda water
31. 31.True or false: a magnet is something yeast does not need. (a) False (b) True
32. 32.🧺 Which of these is needed for the secret lemon message? (a) lemon juice (b) a balloon (c) a magnet (d) yeast
33. 33.🧂 Which of these dissolves in water? (a) sand (b) table salt (c) chalk powder (d) small pebbles
34. 34.True or false: a small bowl is needed for sprouting seeds. (a) True (b) False
35. 35.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) cooking an egg (c) melting butter (d) rusting iron
36. 36.🫗 Why does filtered muddy water look clearer? (a) the filter adds soap (b) the mud dissolves (c) the filter traps mud (d) the water evaporates
37. 37.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a battery cell (b) water (c) cotton wool (d) moong seeds
38. 38.True or false: soap solution is needed for the turmeric test. (a) False (b) True
39. 39.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it wilts and droops (b) it flowers more (c) it turns blue (d) it grows faster
40. 40.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow

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