Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 79 · 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 is the odd one out? (a) plugging in the iron (b) ironing the paper (c) reading the message (d) cutting the lemon
2. 2.True or false: food colour does not dissolve in water. (a) True (b) False
3. 3.🍋 Which of these steps is a job for an adult? (a) reading the message (b) dipping the cotton bud (c) plugging in the iron (d) letting the paper dry
4. 4.🫧 Which of these is a base? (a) salt water (b) tamarind water (c) baking soda water (d) curd
5. 5.True or false: a battery cell is needed for sprouting seeds. (a) True (b) False
6. 6.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the amount of water”? (a) we change it (b) we keep it the same (c) we measure it
7. 7.🫗 How do we separate sugar from sugar water? (a) handpicking (b) winnowing (c) filtering (d) evaporating
8. 8.🧺 Do we need a mirror for the secret lemon message? (a) not needed (b) needed
9. 9.🫗 How do we separate mud from water? (a) winnowing (b) filtering (c) sieving (d) evaporating
10. 10.🧺 Do we need a balloon for making butter? (a) not needed (b) needed
11. 11.🧺 Which of these is needed for the fizzy balloon? (a) a battery cell (b) a magnet (c) a balloon (d) a mirror
12. 12.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is what we measure? (a) size of the balloon (b) the water temperature (c) the amount of yeast (d) the amount of sugar
13. 13.⚖️ 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 the one thing we change. (a) True (b) False
14. 14.⚖️ 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) False (b) True
15. 15.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) sunlight (b) a few hours (c) a potted plant (d) a battery cell
16. 16.⚖️ Fair test — do seeds need water to sprout? Which of these is what we measure? (a) the same bowls (b) wet or dry cotton (c) how many seeds sprout (d) the kind of seeds
17. 17.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) dry yeast (b) a magnet (c) warm water (d) a small bottle
18. 18.🪴 Which part of a plant does this job: make seeds? (a) roots (b) stem (c) flower (d) leaves
19. 19.🧺 Which of these is needed for the fizzy balloon? (a) a mirror (b) sugar (c) a tray for spills (d) a magnet
20. 20.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is kept the same. (a) True (b) False
21. 21.True or false: a battery cell is needed for the turmeric test. (a) True (b) False
22. 22.True or false: yeast is not needed for the muddy water filter. (a) True (b) False
23. 23.🛟 Who should use the hot iron in the secret message experiment? (a) the youngest child (b) only an adult (c) whoever is fastest (d) any child
24. 24.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “amount of water drops”? (a) we measure it (b) we keep it the same (c) we change it
25. 25.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the water temperature is the one thing we change. (a) False (b) True
26. 26.🧂 Which of these does not dissolve in water? (a) table salt (b) sand (c) baking soda (d) sugar
27. 27.🪴 Through which part does a plant take in water from the soil? (a) the flowers (b) the leaves (c) the roots (d) the fruits
28. 28.🔮 Predict: you stop shaking after only one minute. What do you have? (a) ghee (b) cheese (c) still runny cream (d) butter lumps
29. 29.⚖️ Fair test — do seeds need water to sprout? True or false: the kind of seeds is the one thing we change. (a) True (b) False
30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the colour we see (b) the light we look in (c) the liquid we test (d) the number of drops
31. 31.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) it turns sweet (c) crystals grow faster (d) few or no crystals
32. 32.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) moong seeds (b) a few days (c) water (d) a balloon
33. 33.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) vinegar (b) a balloon (c) baking soda (d) a comb
34. 34.🧺 Do we need an empty bottle for the fizzy balloon? (a) not needed (b) needed
35. 35.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) mix bathroom cleaners (c) sniff each bottle hard (d) sip each liquid
36. 36.🍋 Which of these steps is a job a child can do? (a) dipping the cotton bud (b) plugging in the iron (c) putting the iron away (d) ironing the paper
37. 37.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the same glass (b) the same funnel (c) the amount poured (d) the filter material
38. 38.🍋 Why can’t you see the lemon writing once it dries? (a) the paper ate it (b) the ink is magnetic (c) dry juice is see-through (d) it turned into air
39. 39.🧺 Do we need a cotton bud for the secret lemon message? (a) not needed (b) needed
40. 40.⚖️ 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) the size of the plant (b) amount of water drops (c) sun or shade (d) the same kind of bag

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