Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 375 · 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: a seed is needed for the fizzy balloon. (a) False (b) True
2. 2.🛟 Who should use the hot iron in the secret message experiment? (a) any child (b) only an adult (c) the youngest child (d) whoever is fastest
3. 3.🔮 Predict: you cover the dish so no water can escape. What happens? (a) few or no crystals (b) it fizzes (c) crystals grow faster (d) it turns sweet
4. 4.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the same cotton bud”? (a) we measure it (b) we change it (c) we keep it the same
5. 5.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) use only kitchen items (c) sip each liquid (d) sniff each bottle hard
6. 6.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) sunlight (b) a clear plastic bag (c) vinegar (d) a potted plant
7. 7.True or false: a balloon is needed for making butter. (a) True (b) False
8. 8.True or false: white paper strips is not needed for the turmeric test. (a) False (b) True
9. 9.True or false: turmeric powder is not needed for the turmeric test. (a) True (b) False
10. 10.🫧 Which of these is a base? (a) plain water (b) salt water (c) orange juice (d) baking soda water
11. 11.True or false: a mirror is needed for sprouting seeds. (a) True (b) False
12. 12.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a battery cell (b) dry yeast (c) a balloon (d) warm water
13. 13.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “time to make butter”? (a) we keep it the same (b) we change it (c) we measure it
14. 14.🫗 How do we separate sugar from sugar water? (a) evaporating (b) sieving (c) winnowing (d) handpicking
15. 15.True or false: carry water upward is a job of the roots. (a) False (b) True
16. 16.🔮 Predict: you wait 2 hours instead of 10 minutes. What happens? (a) the balloon is smaller (b) it turns to bread (c) it shrinks to nothing (d) the balloon is bigger
17. 17.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap is magnetic (c) soap water is a base (d) soap is hot
18. 18.🧈 Which tool is used in many Indian homes to churn curd into butter? (a) a pressure cooker (b) a sieve (c) a rolling pin (d) a mathani (churner)
19. 19.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) spoons of baking soda (b) the kind of balloon (c) the amount of vinegar (d) size of the balloon
20. 20.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) soap solution (d) lemon juice
21. 21.🧺 Which of these is needed for the secret lemon message? (a) a magnet (b) yeast (c) a balloon (d) white paper
22. 22.🧺 Which of these is needed for the fizzy balloon? (a) a magnet (b) a funnel or spoon (c) sugar (d) a mirror
23. 23.True or false: dry yeast is not needed for the yeast balloon. (a) False (b) True
24. 24.🧺 Which of these is not needed for the fizzy balloon? (a) an empty bottle (b) a balloon (c) a comb (d) baking soda
25. 25.⚖️ Fair test — do seeds need water to sprout? What do we do with “the kind of seeds”? (a) we keep it the same (b) we change it (c) we measure it
26. 26.⚖️ 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
27. 27.🛟 How should the plastic bag be tied around the branch? (a) with sharp wire (b) gently, not too tight (c) with a hot glue gun (d) as tight as possible
28. 28.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) rusting iron (c) dissolving salt (d) cooking an egg
29. 29.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) sand and pebbles (c) a funnel (d) a mirror
30. 30.🛟 Why is a plastic jar a good choice for shaking? (a) it is heavier (b) it will not break (c) it is hotter (d) it is magnetic
31. 31.🫗 How do we separate mud from water? (a) filtering (b) handpicking (c) sieving (d) evaporating
32. 32.🛟 Why must the jar lid be screwed on tightly? (a) so it gets hot (b) so air gets out (c) so it turns yellow (d) so cream does not spill
33. 33.🔍 Which is the odd one out? (a) lemon juice (b) soap solution (c) vinegar (d) salt water
34. 34.🧺 Which of these is needed for the leafy bag test? (a) a potted plant (b) a mirror (c) turmeric powder (d) vinegar
35. 35.🫧 Which of these is an acid? (a) baking soda water (b) orange juice (c) plain water (d) sugar water
36. 36.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is the one thing we change? (a) the time we wait (b) amount of water drops (c) the size of the plant (d) sun or shade
37. 37.True or false: rusting iron is a change that cannot be undone. (a) True (b) False
38. 38.True or false: wet seeds by a window does not sprout. (a) True (b) False
39. 39.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a jar with a tight lid (b) a timer (c) a magnet (d) fresh cream
40. 40.True or false: a clean glass is needed for the muddy water filter. (a) True (b) False

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