Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 627 · 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 cold cream turn into butter faster than warm cream? True or false: the amount of cream is what we measure. (a) True (b) False
2. 2.🧂 Does glucose powder dissolve in water? (a) dissolves in water (b) does not dissolve
3. 3.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “days to see crystals”? (a) we change it (b) we keep it the same (c) we measure it
4. 4.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is what we measure? (a) spoons of baking soda (b) the amount of vinegar (c) size of the balloon (d) the kind of balloon
5. 5.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) water (c) turmeric powder (d) a balloon
6. 6.True or false: a mirror is needed for the fizzy balloon. (a) False (b) True
7. 7.🫗 How do we separate mud from water? (a) filtering (b) sieving (c) evaporating (d) handpicking
8. 8.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) fresh cream (b) cold water to rinse (c) a timer (d) a balloon
9. 9.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a battery cell (b) a jar with a tight lid (c) cold water to rinse (d) fresh cream
10. 10.True or false: sugar is not needed for the yeast balloon. (a) False (b) True
11. 11.🔍 Which is the odd one out? (a) baking soda (b) sawdust (c) glucose powder (d) table salt
12. 12.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
13. 13.True or false: moong seeds is not needed for sprouting seeds. (a) True (b) False
14. 14.🍋 Secret message: who does this step — reading the message? (a) a child can do it (b) an adult does it
15. 15.🫗 How do we separate sugar from sugar water? (a) filtering (b) sieving (c) evaporating (d) handpicking
16. 16.🧺 Do we need a magnet for the secret lemon message? (a) not needed (b) needed
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the light we look in (b) the colour we see (c) the liquid we test (d) the turmeric paper
18. 18.🫧 Is baking soda water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
19. 19.📘 Leaves have tiny holes that let out water vapour. What are they called? (a) stomata (b) petals (c) roots (d) veins
20. 20.🧺 Do we need baking soda for the fizzy balloon? (a) not needed (b) needed
21. 21.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) a mirror (b) an adult with an iron (c) a cotton bud (d) white paper
22. 22.🔮 Predict: seeds on wet cotton are kept in a dark cupboard. Will they sprout? (a) yes, they sprout (b) they turn to stones (c) no, never (d) they melt
23. 23.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is the one thing we change. (a) False (b) True
24. 24.🧺 Which of these is needed for the secret lemon message? (a) an adult with an iron (b) turmeric powder (c) yeast (d) a magnet
25. 25.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a small bowl (b) cotton wool (c) a balloon (d) a few days
26. 26.🧈 Which of these is a change that can be undone? (a) baking a cake (b) milk turning to curd (c) melting ice (d) browning lemon ink
27. 27.🫗 Is filtered pond water safe to drink? (a) no, germs may stay (b) yes, always (c) yes, if it is cold (d) yes, if it is clear
28. 28.🧺 Do we need a rubber band for the leafy bag test? (a) not needed (b) needed
29. 29.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is the one thing we change? (a) the kind of juice (b) how dark the writing is (c) the ironing time (d) the same cotton bud
30. 30.🛟 The water for the yeast should be ___. (a) very salty (b) boiling hot (c) ice cold (d) warm, not hot
31. 31.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the kind of juice”? (a) we measure it (b) we change it (c) we keep it the same
32. 32.🌱 Which of these is not needed for a seed to sprout? (a) warmth (b) water (c) salt (d) air
33. 33.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the time we wait”? (a) we keep it the same (b) we change it (c) we measure it
34. 34.True or false: a magnet is not needed for the turmeric test. (a) False (b) True
35. 35.🛟 Some seeds from shops are coated with chemicals. What is the safe rule? (a) throw them at friends (b) feed them to pets (c) never put seeds in mouth (d) eat a few to check
36. 36.🍋 Secret message: who does this step — plugging in the iron? (a) a child can do it (b) an adult does it
37. 37.True or false: dissolving salt is a change that cannot be undone. (a) True (b) False
38. 38.🧺 Do we need muddy water for the muddy water filter? (a) needed (b) not needed
39. 39.🛟 What should you do after touching soil or seeds? (a) skip washing (b) lick your fingers (c) wash your hands (d) rub your eyes
40. 40.🧺 Which of these is needed for the yeast balloon? (a) a mirror (b) warm water (c) a magnet (d) a battery cell

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