Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 229 · 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 — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we keep it the same (c) we change it
2. 2.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a small bowl (b) a magnet (c) moong seeds (d) cotton wool
3. 3.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “sun or shade”? (a) we change it (b) we keep it the same (c) we measure it
4. 4.🔮 Predict: you use plain water instead of vinegar. What happens? (a) very little fizzing (b) the balloon bursts (c) a huge eruption (d) it turns to honey
5. 5.🧺 Do we need white paper for the secret lemon message? (a) needed (b) not needed
6. 6.🧺 Do we need a few hours for the leafy bag test? (a) not needed (b) needed
7. 7.🧈 Can this change be undone: melting ice? (a) can be undone (b) cannot be undone
8. 8.True or false: a timer is not needed for making butter. (a) True (b) False
9. 9.True or false: tamarind water is an acid. (a) True (b) False
10. 10.🧺 Do we need turmeric powder for the yeast balloon? (a) needed (b) not needed
11. 11.🫗 How do we separate small stones from dal? (a) filtering (b) sieving (c) handpicking (d) evaporating
12. 12.🌱 Seeds need water, air and ___ to sprout. (a) soil (b) salt (c) warmth (d) sugar
13. 13.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a few days (b) yeast (c) moong seeds (d) cotton wool
14. 14.🍋 Which of these steps is a job a child can do? (a) dipping the cotton bud (b) putting the iron away (c) ironing the paper (d) plugging in the iron
15. 15.🔮 The fizzing stops after a while. Why? (a) an ingredient ran out (b) the gas froze (c) the bottle got tired (d) the balloon got cold
16. 16.True or false: soil is needed for a seed to sprout. (a) False (b) True
17. 17.🧺 Which of these is not needed for sprouting seeds? (a) water (b) turmeric powder (c) a few days (d) moong seeds
18. 18.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) reddish-brown (c) it turns green (d) it stays yellow
19. 19.True or false: a funnel is needed for the muddy water filter. (a) False (b) True
20. 20.🔍 Which is the odd one out? (a) small pebbles (b) cooking oil (c) sand (d) table salt
21. 21.🧺 Which of these is not needed for sprouting seeds? (a) a magnet (b) cotton wool (c) water (d) a few days
22. 22.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is kept the same? (a) size of the balloon (b) the water temperature (c) the amount of yeast
23. 23.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the same bottles”? (a) we measure it (b) we change it (c) we keep it the same
24. 24.True or false: sugar water keeps turmeric yellow. (a) True (b) False
25. 25.🧺 Which of these is needed for the yeast balloon? (a) a comb (b) a balloon (c) a magnet (d) a battery cell
26. 26.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) sugar (b) a paper clip (c) dry yeast (d) a balloon
27. 27.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the amount of vinegar is the one thing we change. (a) True (b) False
28. 28.🧺 Which of these is not needed for the leafy bag test? (a) a potted plant (b) a few hours (c) a rubber band (d) vinegar
29. 29.🧺 Do we need lemon juice for the secret lemon message? (a) not needed (b) needed
30. 30.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is hot (c) clear water is salty (d) germs are invisible
31. 31.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) muddy water (c) a balloon (d) sand and pebbles
32. 32.🍋 Which of these steps is a job for an adult? (a) plugging in the iron (b) dipping the cotton bud (c) reading the message (d) writing the message
33. 33.True or false: bran from wheat flour is done by sieving. (a) True (b) False
34. 34.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) sugar water (c) detergent water (d) soap solution
35. 35.🧺 Which of these is needed for making butter? (a) turmeric powder (b) a magnet (c) a bowl (d) yeast
36. 36.True or false: an empty bottle is needed for the fizzy balloon. (a) False (b) True
37. 37.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) white paper (b) a small bowl (c) a cotton bud (d) a magnet
38. 38.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a comb (b) a funnel or spoon (c) baking soda (d) a tray for spills
39. 39.🧺 Which of these is not needed for making butter? (a) turmeric powder (b) a bowl (c) a timer (d) a jar with a tight lid
40. 40.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed

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