Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 441 · 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.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a timer (b) turmeric powder (c) a bowl (d) a jar with a tight lid
2. 2.🫗 Which of these is done by handpicking? (a) bran from wheat flour (b) sugar from sugar water (c) bad grains from rice (d) husk from rice grain
3. 3.🧂 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
4. 4.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: size of the balloon is kept the same. (a) True (b) False
5. 5.🧺 Which of these is not needed for the yeast balloon? (a) turmeric powder (b) sugar (c) dry yeast (d) warm water
6. 6.🛟 What should you do if vinegar splashes in your eye? (a) add baking soda (b) rub it hard (c) ignore it (d) rinse with clean water
7. 7.🔍 Which is the odd one out? (a) vinegar (b) orange juice (c) baking soda water (d) curd
8. 8.🔍 Which is the odd one out? (a) salt water (b) tamarind water (c) detergent water (d) lemon juice
9. 9.🫗 How do we separate small stones from dal? (a) handpicking (b) evaporating (c) winnowing (d) sieving
10. 10.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it wilts and droops (b) it flowers more (c) it grows faster (d) it turns blue
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the number of drops (b) the colour we see (c) the turmeric paper (d) the liquid we test
12. 12.True or false: a battery cell is needed for making butter. (a) True (b) False
13. 13.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “size of the balloon”? (a) we change it (b) we measure it (c) we keep it the same
14. 14.🧺 Which of these is not needed for the muddy water filter? (a) yeast (b) sand and pebbles (c) a clean glass (d) a funnel
15. 15.🧺 Do we need a mirror for sprouting seeds? (a) not needed (b) needed
16. 16.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: how dark the writing is is what we measure. (a) False (b) True
17. 17.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) bright blue (c) white at once (d) reddish
18. 18.🌱 Which of these is not needed for a seed to sprout? (a) water (b) sunlight (c) warmth (d) air
19. 19.🫧 What do you see when baking soda meets vinegar? (a) it glows in the dark (b) it turns to ice (c) nothing at all (d) lots of fizzy bubbles
20. 20.🌱 Which of these is not needed for a seed to sprout? (a) air (b) sugar (c) water (d) warmth
21. 21.⚖️ 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 amount of water (b) the water temperature (c) the same bottles (d) the amount of yeast
22. 22.📘 What do we call a solution that cannot dissolve any more salt? (a) empty (b) frozen (c) saturated (d) magnetic
23. 23.🌱 Which of these does not sprout? (a) wet seeds by a window (b) seeds on wet cotton (c) boiled seeds (d) wet seeds in the dark
24. 24.🔮 Predict: you shake skimmed milk (with almost no cream) instead. What happens? (a) it turns blue (b) it turns to cheese (c) no butter forms (d) more butter forms
25. 25.True or false: melting butter is a change that cannot be undone. (a) False (b) True
26. 26.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is the one thing we change? (a) time to make butter (b) the amount of cream (c) the cream temperature (d) the same jar
27. 27.🧺 Which of these is needed for the fizzy balloon? (a) sugar (b) baking soda (c) a magnet (d) a seed
28. 28.⚖️ Fair test — do seeds need water to sprout? True or false: the kind of seeds is the one thing we change. (a) True (b) False
29. 29.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the amount poured (b) the filter material (c) how clear the water is
30. 30.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: time to make butter is what we measure. (a) False (b) True
31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we measure it (c) we keep it the same
32. 32.🟡 Why does soap solution change turmeric’s colour? (a) soap water is a base (b) soap is magnetic (c) soap is hot (d) soap is an acid
33. 33.🔍 Which is the odd one out? (a) dipping the cotton bud (b) ironing the paper (c) cutting the lemon (d) putting the iron away
34. 34.🫧 Is soap solution an acid, a base or neutral? (a) a base (b) neutral (c) an acid
35. 35.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “sunny or shady place”? (a) we change it (b) we keep it the same (c) we measure it
36. 36.True or false: soap solution is neutral. (a) False (b) True
37. 37.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is what we measure. (a) True (b) False
38. 38.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is what we measure? (a) the same cotton bud (b) the kind of juice (c) how dark the writing is (d) the iron setting
39. 39.🧺 Which of these is needed for sprouting seeds? (a) a magnet (b) turmeric powder (c) water (d) a balloon
40. 40.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the iron setting is kept the same. (a) True (b) False

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