Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 706 · 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 steps is a job a child can do? (a) plugging in the iron (b) cutting the lemon (c) dipping the cotton bud (d) putting the iron away
2. 2.True or false: gravel from fine sand is done by filtering. (a) False (b) True
3. 3.🫗 How do we separate sugar from sugar water? (a) handpicking (b) winnowing (c) filtering (d) evaporating
4. 4.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) turmeric powder (b) warm water (c) a small bottle (d) a balloon
5. 5.🔍 Which is the odd one out? (a) chalk powder (b) cooking oil (c) sawdust (d) food colour
6. 6.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: size of the balloon is the one thing we change. (a) True (b) False
7. 7.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) no, salt passes through (b) yes, all of it (c) it turns to sand (d) it turns to sugar
8. 8.🧺 Which of these is not needed for the leafy bag test? (a) a potted plant (b) sunlight (c) a few hours (d) yeast
9. 9.🔮 Predict: you use plain water instead of vinegar. What happens? (a) a huge eruption (b) the balloon bursts (c) very little fizzing (d) it turns to honey
10. 10.🫧 Is baking soda water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
11. 11.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) dissolving salt (c) milk turning to curd (d) melting ice
12. 12.True or false: baking a cake is a change that can be undone. (a) True (b) False
13. 13.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) False (b) True
15. 15.🧂 Which of these does not dissolve in water? (a) baking soda (b) table salt (c) glucose powder (d) sawdust
16. 16.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the kind of balloon”? (a) we change it (b) we keep it the same (c) we measure it
17. 17.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) a cotton bud (b) lemon juice (c) an adult with an iron (d) a balloon
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the number of drops (c) the colour we see (d) the liquid we test
19. 19.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
20. 20.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) salty (c) hot (d) clearer
21. 21.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: size of the balloon is the one thing we change. (a) True (b) False
22. 22.🪴 Which part of a plant does this job: make food in sunlight? (a) roots (b) stem (c) leaves (d) flower
23. 23.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) the same bottle (b) the kind of balloon (c) size of the balloon (d) spoons of baking soda
24. 24.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) moong seeds (b) a small bowl (c) a mirror (d) cotton wool
25. 25.🧺 Which of these is needed for the yeast balloon? (a) a magnet (b) a comb (c) turmeric powder (d) dry yeast
26. 26.🧺 Which of these is needed for the secret lemon message? (a) a mirror (b) yeast (c) a cotton bud (d) turmeric powder
27. 27.🍞 Does yeast need salt to make gas? (a) yeast does not need it (b) yeast needs it
28. 28.🧺 Do we need a balloon for the yeast balloon? (a) needed (b) not needed
29. 29.🛟 Lemon juice stings cuts and eyes. What should you do after the experiment? (a) rub your eyes (b) skip washing (c) lick your fingers (d) wash your hands
30. 30.🔍 Which is the odd one out? (a) sand (b) table salt (c) food colour (d) sugar
31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we change it (c) we keep it the same
32. 32.🔮 Predict: you stop shaking after only one minute. What do you have? (a) ghee (b) still runny cream (c) butter lumps (d) cheese
33. 33.True or false: gravel from fine sand is done by handpicking. (a) True (b) False
34. 34.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the amount of salt”? (a) we measure it (b) we keep it the same (c) we change it
35. 35.🛟 After the yeast experiment, what should you do with the mixture? (a) keep it for a month (b) put it in your mouth (c) throw it at a wall (d) pour it down the sink
36. 36.⚖️ 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 same bottles (c) the amount of yeast (d) the amount of sugar
37. 37.🧺 Do we need a battery cell for sprouting seeds? (a) needed (b) not needed
38. 38.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) a small bowl (b) an adult with an iron (c) yeast (d) a cotton bud
39. 39.🫗 Which of these is done by handpicking? (a) chaff from wheat grain (b) husk from rice grain (c) gravel from fine sand (d) small stones from dal
40. 40.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it grows faster (b) it turns blue (c) it flowers more (d) it wilts and droops

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