Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 457 · 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.🪴 Through which part does a plant take in water from the soil? (a) the flowers (b) the fruits (c) the leaves (d) the roots
2. 2.🔮 Can the brown writing go back to being invisible? (a) no, it stays brown (b) yes, if cooled (c) yes, in the dark (d) yes, if shaken
3. 3.🌱 Which of these sprouts in a few days? (a) wet seeds by a window (b) seeds in the freezer (c) seeds on dry cotton (d) boiled seeds
4. 4.🧺 Which of these is needed for the leafy bag test? (a) a magnet (b) a potted plant (c) vinegar (d) a battery cell
5. 5.🧺 Do we need turmeric powder for the leafy bag test? (a) not needed (b) needed
6. 6.🧺 Do we need a magnet for the fizzy balloon? (a) not needed (b) needed
7. 7.🔮 Predict: you stop shaking after only one minute. What do you have? (a) butter lumps (b) cheese (c) ghee (d) still runny cream
8. 8.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) lemon juice (b) an adult with an iron (c) turmeric powder (d) a small bowl
9. 9.🧂 Which of these does not dissolve in water? (a) sawdust (b) glucose powder (c) table salt (d) sugar
10. 10.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is the one thing we change? (a) sun or shade (b) amount of water drops (c) the kind of plant (d) the time we wait
11. 11.🪴 Which part of a plant does this job: hold the plant in soil? (a) leaves (b) stem (c) roots (d) flower
12. 12.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) sunlight (b) a few hours (c) vinegar (d) a clear plastic bag
13. 13.True or false: a shallow dish is not needed for growing salt crystals. (a) True (b) False
14. 14.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) days to see crystals (b) sunny or shady place (c) the amount of water
15. 15.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a comb (b) a balloon (c) baking soda (d) vinegar
16. 16.True or false: turmeric powder is needed for the secret lemon message. (a) False (b) True
17. 17.True or false: a jar with a tight lid is not needed for making butter. (a) False (b) True
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the liquid we test (c) the turmeric paper
19. 19.🍋 Which of these steps is a job a child can do? (a) cutting the lemon (b) plugging in the iron (c) ironing the paper (d) letting the paper dry
20. 20.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a rubber band (b) a magnet (c) a potted plant (d) a clear plastic bag
21. 21.True or false: ironing the paper is a job for an adult. (a) False (b) True
22. 22.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the same paper”? (a) we measure it (b) we change it (c) we keep it the same
23. 23.🧈 Can this change be undone: rusting iron? (a) can be undone (b) cannot be undone
24. 24.⚖️ 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
25. 25.🧈 Can this change be undone: freezing water? (a) cannot be undone (b) can be undone
26. 26.🫧 Which of these is a base? (a) orange juice (b) detergent water (c) vinegar (d) curd
27. 27.🧈 Why does shaking cream make butter? (a) fat bits stick together (b) the jar adds butter (c) the lid is warm (d) shaking adds salt
28. 28.True or false: detergent water keeps turmeric yellow. (a) True (b) False
29. 29.🧺 Which of these is not needed for growing salt crystals? (a) a magnet (b) a piece of string (c) salt (d) a shallow dish
30. 30.🔮 Predict: you use plain water instead of vinegar. What happens? (a) it turns to honey (b) the balloon bursts (c) very little fizzing (d) a huge eruption
31. 31.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) reddish (c) white at once (d) bright blue
32. 32.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) soap solution (c) yeast (d) turmeric powder
33. 33.🪴 Which of these is a job of the leaves? (a) take in water from soil (b) hold the plant in soil (c) give out water vapour (d) make seeds
34. 34.🎈 Why does the balloon blow up? (a) vinegar is hot (b) gas is made inside (c) the bottle shrinks (d) outside air gets in
35. 35.True or false: sugar is needed for the yeast balloon. (a) True (b) False
36. 36.⚖️ Fair test — do seeds need water to sprout? True or false: how many seeds sprout is the one thing we change. (a) True (b) False
37. 37.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) cotton wool (b) a battery cell (c) water (d) moong seeds
38. 38.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a timer (b) fresh cream (c) a battery cell (d) a jar with a tight lid
39. 39.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we change it (b) we keep it the same (c) we measure it
40. 40.🧺 Do we need turmeric powder for the yeast balloon? (a) not needed (b) needed

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