Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 508 · 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.🫧 Is plain water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
2. 2.🍋 Secret message: who does this step — plugging in the iron? (a) a child can do it (b) an adult does it
3. 3.🍋 Secret message: who does this step — putting the iron away? (a) an adult does it (b) a child can do it
4. 4.True or false: turmeric powder is needed for the turmeric test. (a) False (b) True
5. 5.🧺 Do we need a small bottle for the yeast balloon? (a) needed (b) not needed
6. 6.📘 What is yeast? (a) a kind of stone (b) a tiny living fungus (c) a kind of salt (d) a kind of sugar
7. 7.🧺 Which of these is needed for making butter? (a) fresh cream (b) turmeric powder (c) a magnet (d) a battery cell
8. 8.True or false: sand and pebbles is not needed for the muddy water filter. (a) False (b) True
9. 9.🍞 Which of these is something yeast needs? (a) time (b) sunlight (c) a magnet (d) vinegar
10. 10.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is kept the same. (a) True (b) False
11. 11.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a mirror (b) a small bowl (c) moong seeds (d) cotton wool
12. 12.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) a battery cell (c) muddy water (d) a funnel
13. 13.🔍 Which is the odd one out? (a) ironing the paper (b) putting the iron away (c) cutting the lemon (d) dipping the cotton bud
14. 14.True or false: curd is an acid. (a) True (b) False
15. 15.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a mirror (c) a magnet (d) a dropper or spoon
16. 16.⚖️ 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
17. 17.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the water temperature is kept the same. (a) True (b) False
18. 18.🍞 Which of these is something yeast needs? (a) a magnet (b) warm water (c) salt (d) sunlight
19. 19.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) sugar water (c) detergent water (d) baking soda water
20. 20.🔮 Predict: you leave out the sugar. What happens to the balloon? (a) it bursts at once (b) it grows much faster (c) it grows very little (d) it turns yellow
21. 21.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) liquid crystals (b) bigger crystals (c) smaller crystals (d) no crystals
22. 22.🔍 Which is the odd one out? (a) dissolving salt (b) rusting iron (c) freezing water (d) folding paper
23. 23.🔮 The fizzing stops after a while. Why? (a) the gas froze (b) the balloon got cold (c) the bottle got tired (d) an ingredient ran out
24. 24.🫧 Which of these is an acid? (a) soap solution (b) curd (c) sugar water (d) baking soda water
25. 25.🧺 Do we need sugar for the fizzy balloon? (a) needed (b) not needed
26. 26.🫗 How do we separate bad grains from rice? (a) winnowing (b) handpicking (c) evaporating (d) sieving
27. 27.⚖️ 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 light we look in
28. 28.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is kept the same? (a) how dark the writing is (b) the iron setting (c) the kind of juice
29. 29.🫗 Why does filtered muddy water look clearer? (a) the mud dissolves (b) the filter adds soap (c) the filter traps mud (d) the water evaporates
30. 30.True or false: sugar is something yeast needs. (a) True (b) False
31. 31.True or false: sugar is not needed for the yeast balloon. (a) True (b) False
32. 32.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to oil (b) it turns to butter (c) salt crystals form (d) sugar crystals form
33. 33.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) warm water (c) a magnet (d) turmeric powder
34. 34.🧺 Do we need a battery cell for growing salt crystals? (a) not needed (b) needed
35. 35.🛟 Which safety rule fits the fizzy balloon experiment? (a) keep it away from eyes (b) put it in your mouth (c) shake it near your face (d) seal it in a glass jar
36. 36.True or false: a balloon is not needed for the fizzy balloon. (a) True (b) False
37. 37.🛟 Why must children keep their fingers away from the iron? (a) it can burn skin (b) it is sticky (c) it is cold (d) it is magnetic
38. 38.🌱 Is air needed for a seed to sprout? (a) needed to sprout (b) not needed to sprout
39. 39.🌱 Which of these does not sprout? (a) wet seeds by a window (b) seeds on dry cotton (c) wet seeds in the dark (d) seeds on wet cotton
40. 40.🧺 Which of these is not needed for the yeast balloon? (a) a balloon (b) dry yeast (c) a comb (d) warm water

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