Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 277 · 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.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: amount of water drops is what we measure. (a) False (b) True
2. 2.True or false: a magnet is not needed for sprouting seeds. (a) True (b) False
3. 3.🧺 Which of these is needed for the secret lemon message? (a) turmeric powder (b) an adult with an iron (c) yeast (d) a battery cell
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the number of drops (c) the liquid we test
5. 5.🔮 Predict: you write with plain water instead of lemon juice. What appears after ironing? (a) dark brown words (b) a rainbow (c) almost nothing (d) blue words
6. 6.🔮 Predict: which gives more drops in the bag — a hot sunny day or a cool cloudy day? (a) the cool cloudy day (b) both the same (c) neither of them (d) the hot sunny day
7. 7.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is the one thing we change? (a) the amount of cream (b) time to make butter (c) the cream temperature (d) the same jar
8. 8.🫗 Which of these is done by filtering? (a) bran from wheat flour (b) bad grains from rice (c) husk from rice grain (d) tea leaves from tea
9. 9.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a balloon (b) a funnel or spoon (c) a tray for spills (d) a comb
10. 10.⚖️ Fair test — do seeds need water to sprout? Which of these is kept the same? (a) the kind of seeds (b) wet or dry cotton (c) how many seeds sprout
11. 11.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
12. 12.🧺 Do we need a small bowl for the secret lemon message? (a) not needed (b) needed
13. 13.🫧 Is tamarind water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
14. 14.🧺 Do we need a potted plant for the leafy bag test? (a) needed (b) not needed
15. 15.🌱 Which of these does not sprout? (a) wet seeds in the dark (b) wet seeds by a window (c) seeds on wet cotton (d) seeds in the freezer
16. 16.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a balloon (b) dry yeast (c) sugar (d) a comb
17. 17.🔍 Which is the odd one out? (a) lemon juice (b) salt water (c) tamarind water (d) detergent water
18. 18.🌱 Is warmth needed for a seed to sprout? (a) not needed to sprout (b) needed to sprout
19. 19.True or false: turmeric powder is not needed for the yeast balloon. (a) False (b) True
20. 20.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: how dark the writing is is the one thing we change. (a) False (b) True
21. 21.True or false: a balloon is needed for the muddy water filter. (a) True (b) False
22. 22.⚖️ Fair test — do seeds need water to sprout? Which of these is the one thing we change? (a) the number of seeds (b) the kind of seeds (c) wet or dry cotton (d) how many seeds sprout
23. 23.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap water is a base (c) soap is hot (d) soap is magnetic
24. 24.🫗 How do we separate salt from sea water? (a) filtering (b) sieving (c) evaporating (d) winnowing
25. 25.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) cotton or cloth (c) a battery cell (d) a clean glass
26. 26.🫧 Which of these is neutral? (a) sugar water (b) lemon juice (c) orange juice (d) tamarind water
27. 27.🔮 Predict: you shake skimmed milk (with almost no cream) instead. What happens? (a) it turns to cheese (b) it turns blue (c) no butter forms (d) more butter forms
28. 28.🧺 Which of these is not needed for the leafy bag test? (a) a battery cell (b) a potted plant (c) sunlight (d) a few hours
29. 29.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a timer (b) cold water to rinse (c) a balloon (d) a bowl
30. 30.🫧 Is salt water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
31. 31.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “amount of water drops”? (a) we measure it (b) we change it (c) we keep it the same
32. 32.🍋 Why can’t you see the lemon writing once it dries? (a) dry juice is see-through (b) the ink is magnetic (c) it turned into air (d) the paper ate it
33. 33.True or false: salt water keeps turmeric yellow. (a) True (b) False
34. 34.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) lemon juice (b) a magnet (c) a cotton bud (d) an adult with an iron
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we change it (b) we measure it (c) we keep it the same
36. 36.True or false: a clean glass is not needed for the muddy water filter. (a) True (b) False
37. 37.🫗 Which of these is done by filtering? (a) bran from wheat flour (b) chaff from wheat grain (c) small stones from dal (d) mud from water
38. 38.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it grows faster (b) it flowers more (c) it turns blue (d) it wilts and droops
39. 39.🧺 Do we need a seed for the fizzy balloon? (a) not needed (b) needed
40. 40.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) it turns green (c) it stays yellow (d) reddish-brown

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