Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 446 · 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 a seed to sprout? (a) sugar (b) sunlight (c) salt (d) water
2. 2.🧺 Which of these is needed for the turmeric test? (a) yeast (b) turmeric powder (c) a battery cell (d) a magnet
3. 3.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “spoons of baking soda”? (a) we keep it the same (b) we change it (c) we measure it
4. 4.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) rusting iron (c) melting butter (d) baking a cake
5. 5.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is what we measure? (a) the water temperature (b) the amount of sugar (c) the amount of water (d) size of the balloon
6. 6.🧺 Do we need a bowl for making butter? (a) needed (b) not needed
7. 7.True or false: lemon juice is neutral. (a) False (b) True
8. 8.🔍 Which is the odd one out? (a) letting the paper dry (b) putting the iron away (c) dipping the cotton bud (d) reading the message
9. 9.🔍 Which is the odd one out? (a) reading the message (b) letting the paper dry (c) ironing the paper (d) writing the message
10. 10.🧺 Do we need turmeric powder for the leafy bag test? (a) needed (b) not needed
11. 11.🫗 Which of these is done by handpicking? (a) bran from wheat flour (b) chaff from wheat grain (c) mud from water (d) small stones from dal
12. 12.🧺 Do we need a mirror for the yeast balloon? (a) needed (b) not needed
13. 13.🍞 Which of these is something yeast does not need? (a) time (b) warm water (c) sugar (d) vinegar
14. 14.🔮 Predict: the adult irons for only one second. What happens? (a) writing turns green (b) it gets darker (c) writing stays faint (d) the paper floats
15. 15.True or false: curd is an acid. (a) True (b) False
16. 16.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is the one thing we change? (a) the kind of juice (b) the same cotton bud (c) the iron setting (d) how dark the writing is
17. 17.🫧 Is curd an acid, a base or neutral? (a) neutral (b) an acid (c) a base
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we keep it the same (c) we change it
19. 19.🫧 Which of these is neutral? (a) vinegar (b) tamarind water (c) plain water (d) curd
20. 20.🧈 Can this change be undone: dissolving salt? (a) can be undone (b) cannot be undone
21. 21.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) soap solution (c) water (d) white paper strips
22. 22.True or false: turmeric powder is not needed for the leafy bag test. (a) False (b) True
23. 23.🛟 What should you do if vinegar splashes in your eye? (a) ignore it (b) rub it hard (c) rinse with clean water (d) add baking soda
24. 24.⚖️ Fair test — do seeds need water to sprout? What do we do with “the number of seeds”? (a) we measure it (b) we change it (c) we keep it the same
25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the colour we see (c) the number of drops
26. 26.True or false: plain water keeps turmeric yellow. (a) False (b) True
27. 27.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) yeast (c) a clean glass (d) a magnet
28. 28.True or false: boiled seeds sprouts in a few days. (a) True (b) False
29. 29.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) muddy water (c) cotton or cloth (d) yeast
30. 30.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) cotton or cloth (c) a balloon (d) sand and pebbles
31. 31.🪴 Which part of a plant does this job: take in water from soil? (a) roots (b) stem (c) leaves (d) flower
32. 32.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
33. 33.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
34. 34.🧺 Which of these is not needed for the fizzy balloon? (a) a mirror (b) vinegar (c) a tray for spills (d) an empty bottle
35. 35.True or false: a battery cell is not needed for the leafy bag test. (a) True (b) False
36. 36.🧺 Which of these is needed for sprouting seeds? (a) yeast (b) a balloon (c) water (d) a magnet
37. 37.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
38. 38.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the amount of vinegar”? (a) we keep it the same (b) we measure it (c) we change it
39. 39.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “the same jar”? (a) we change it (b) we keep it the same (c) we measure it
40. 40.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: spoons of baking soda is what we measure. (a) True (b) False

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