Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 839 · 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 more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) size of the balloon (b) spoons of baking soda (c) the same bottle (d) the kind of balloon
2. 2.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) a shallow dish (c) a mirror (d) a piece of string
3. 3.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the same paper is kept the same. (a) True (b) False
4. 4.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the time we wait is what we measure. (a) True (b) False
5. 5.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it floats on top (b) it turns to sand (c) it sinks to the bottom (d) it dissolves
6. 6.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) germs are invisible (c) clear water is sweet (d) clear water is salty
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the colour we see (b) the liquid we test (c) the light we look in (d) the turmeric paper
8. 8.🧺 Which of these is not needed for the leafy bag test? (a) vinegar (b) a few hours (c) a potted plant (d) sunlight
9. 9.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “the same jar”? (a) we keep it the same (b) we change it (c) we measure it
10. 10.True or false: a magnet is not needed for the muddy water filter. (a) False (b) True
11. 11.🧺 Which of these is needed for the yeast balloon? (a) a balloon (b) turmeric powder (c) a paper clip (d) a magnet
12. 12.🧺 Which of these is not needed for the fizzy balloon? (a) baking soda (b) a magnet (c) vinegar (d) an empty bottle
13. 13.True or false: a potted plant is needed for the leafy bag test. (a) False (b) True
14. 14.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it turns sweet (b) it fizzes (c) crystals grow faster (d) few or no crystals
15. 15.True or false: time is something yeast does not need. (a) False (b) True
16. 16.🪴 Which part of a plant does this job: make seeds? (a) stem (b) leaves (c) roots (d) flower
17. 17.🔍 Which is the odd one out? (a) cooking an egg (b) milk turning to curd (c) melting ice (d) baking a cake
18. 18.🔍 Which is the odd one out? (a) writing the message (b) putting the iron away (c) plugging in the iron (d) cutting the lemon
19. 19.🟡 Which of these keeps turmeric yellow? (a) sugar water (b) baking soda water (c) detergent water (d) soap solution
20. 20.⚖️ Fair test — do seeds need water to sprout? Which of these is the one thing we change? (a) how many seeds sprout (b) the same bowls (c) wet or dry cotton (d) the kind of seeds
21. 21.🫧 Which of these is an acid? (a) detergent water (b) sugar water (c) tamarind water (d) plain water
22. 22.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a magnet (b) a rubber band (c) a potted plant (d) a clear plastic bag
23. 23.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a potted plant (b) a clear plastic bag (c) yeast (d) sunlight
24. 24.🧺 Do we need a cotton bud for the secret lemon message? (a) not needed (b) needed
25. 25.True or false: white paper is needed for the secret lemon message. (a) False (b) True
26. 26.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a magnet (c) turmeric powder (d) yeast
27. 27.🔍 Which is the odd one out? (a) sugar water (b) vinegar (c) plain water (d) detergent water
28. 28.True or false: turmeric powder is not needed for making butter. (a) True (b) False
29. 29.True or false: soap solution keeps turmeric yellow. (a) True (b) False
30. 30.🫧 Which of these is an acid? (a) salt water (b) plain water (c) orange juice (d) detergent water
31. 31.🧺 Do we need vinegar for the fizzy balloon? (a) needed (b) not needed
32. 32.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) clearer (c) muddier (d) hot
33. 33.🌱 Will these sprout: wet seeds by a window? (a) sprouts (b) does not sprout
34. 34.True or false: curd is a base. (a) True (b) False
35. 35.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a tray for spills (b) vinegar (c) a comb (d) a funnel or spoon
36. 36.🔍 Which is the odd one out? (a) dipping the cotton bud (b) ironing the paper (c) putting the iron away (d) cutting the lemon
37. 37.🍋 Secret message: who does this step — plugging in the iron? (a) an adult does it (b) a child can do it
38. 38.⚖️ 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
39. 39.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
40. 40.🔮 Predict: you tie a bag on a branch with no leaves. Will it collect much water? (a) exactly the same (b) much more water (c) it fills with soil (d) much less water

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