Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 767 · 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 turmeric powder for making butter? (a) needed (b) not needed
2. 2.🔮 The fizzing stops after a while. Why? (a) the gas froze (b) an ingredient ran out (c) the bottle got tired (d) the balloon got cold
3. 3.🔮 Predict: you write with plain water instead of lemon juice. What appears after ironing? (a) a rainbow (b) almost nothing (c) dark brown words (d) blue words
4. 4.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sip each liquid (c) sniff each bottle hard (d) use only kitchen items
5. 5.True or false: yeast is needed for the secret lemon message. (a) False (b) True
6. 6.🧺 Do we need dry yeast for the yeast balloon? (a) not needed (b) needed
7. 7.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is what we measure? (a) the kind of juice (b) the same paper (c) the same cotton bud (d) how dark the writing is
8. 8.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it flowers more (b) it turns blue (c) it wilts and droops (d) it grows faster
9. 9.🔮 Predict: you wait 2 hours instead of 10 minutes. What happens? (a) the balloon is smaller (b) it shrinks to nothing (c) the balloon is bigger (d) it turns to bread
10. 10.True or false: a funnel is needed for the muddy water filter. (a) False (b) True
11. 11.True or false: vinegar is an acid. (a) False (b) True
12. 12.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) turmeric powder (c) white paper strips (d) a comb
13. 13.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is the one thing we change? (a) the same cotton bud (b) the same paper (c) how dark the writing is (d) the kind of juice
14. 14.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sand (b) yes, all of it (c) no, salt passes through (d) it turns to sugar
15. 15.🧺 Do we need a potted plant for the leafy bag test? (a) not needed (b) needed
16. 16.True or false: freezing water is a change that cannot be undone. (a) False (b) True
17. 17.🔍 Which is the odd one out? (a) air (b) warmth (c) sunlight (d) water
18. 18.🧺 Do we need a mirror for the secret lemon message? (a) needed (b) not needed
19. 19.True or false: yeast is not needed for the secret lemon message. (a) False (b) True
20. 20.🧺 Do we need vinegar for the leafy bag test? (a) needed (b) not needed
21. 21.🔍 Which is the odd one out? (a) dissolving salt (b) rusting iron (c) folding paper (d) melting butter
22. 22.🧺 Do we need white paper for the secret lemon message? (a) needed (b) not needed
23. 23.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a magnet (b) an empty bottle (c) baking soda (d) a balloon
24. 24.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a battery cell (b) sand and pebbles (c) muddy water (d) a clean glass
25. 25.🧺 Which of these is not needed for the turmeric test? (a) water (b) a mirror (c) white paper strips (d) lemon juice
26. 26.🔍 Which is the odd one out? (a) warm water (b) time (c) sugar (d) vinegar
27. 27.🫧 Which of these is an acid? (a) curd (b) sugar water (c) plain water (d) salt water
28. 28.True or false: a battery cell is needed for sprouting seeds. (a) True (b) False
29. 29.🪴 Which part of a plant does this job: make seeds? (a) leaves (b) stem (c) flower (d) roots
30. 30.🧺 Do we need a rubber band for the leafy bag test? (a) needed (b) not needed
31. 31.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) vinegar (b) a balloon (c) a mirror (d) a tray for spills
32. 32.🍋 What colour does the lemon writing turn when an adult warms it? (a) brown (b) green (c) blue (d) white
33. 33.🧂 Why do crystals appear as the dish dries? (a) the dish melts (b) water evaporates (c) salt grows roots (d) salt eats water
34. 34.🔮 Predict: the jar is filled right to the top with cream. What happens? (a) it turns pink (b) it takes much longer (c) it makes salt (d) it is much faster
35. 35.🧺 Do we need an adult with an iron for the secret lemon message? (a) not needed (b) needed
36. 36.🔍 Which is the odd one out? (a) food colour (b) table salt (c) sand (d) baking soda
37. 37.True or false: sugar from sugar water is done by evaporating. (a) True (b) False
38. 38.True or false: yeast is not needed for growing salt crystals. (a) True (b) False
39. 39.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is the one thing we change? (a) the water temperature (b) the amount of water (c) size of the balloon (d) the amount of sugar
40. 40.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a balloon (b) muddy water (c) sand and pebbles (d) a clean glass

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