Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 936 · 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.🧺 Do we need turmeric powder for the secret lemon message? (a) not needed (b) needed
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we keep it the same (b) we measure it (c) we change it
3. 3.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the iron setting”? (a) we change it (b) we measure it (c) we keep it the same
4. 4.🌱 Which of these does not sprout? (a) seeds on wet cotton (b) wet seeds by a window (c) boiled seeds (d) wet seeds in the dark
5. 5.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
6. 6.🔮 Predict: you leave out the sugar. What happens to the balloon? (a) it grows much faster (b) it bursts at once (c) it turns yellow (d) it grows very little
7. 7.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) milk turning to curd (c) dissolving salt (d) melting ice
8. 8.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) lemon juice (c) a magnet (d) a dropper or spoon
9. 9.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
10. 10.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
11. 11.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a jar with a tight lid (b) turmeric powder (c) cold water to rinse (d) fresh cream
12. 12.⚖️ 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 muddy water (b) how clear the water is (c) the same funnel (d) the filter material
13. 13.True or false: water is needed for a seed to sprout. (a) False (b) True
14. 14.🧺 Which of these is needed for making butter? (a) yeast (b) fresh cream (c) a mirror (d) a magnet
15. 15.⚖️ 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) False (b) True
16. 16.🔮 Can the brown writing go back to being invisible? (a) yes, if cooled (b) yes, in the dark (c) no, it stays brown (d) yes, if shaken
17. 17.🧺 Which of these is needed for sprouting seeds? (a) a battery cell (b) a magnet (c) water (d) a mirror
18. 18.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it grows faster (b) it flowers more (c) it turns blue (d) it wilts and droops
19. 19.True or false: a funnel or spoon is not needed for the fizzy balloon. (a) False (b) True
20. 20.🪴 Which of these is a job of the leaves? (a) take in water from soil (b) hold up the leaves (c) make seeds (d) give out water vapour
21. 21.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
22. 22.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) melting butter (c) baking a cake (d) milk turning to curd
23. 23.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a small bottle (b) sugar (c) warm water (d) a mirror
24. 24.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) baking soda (b) a seed (c) vinegar (d) a balloon
25. 25.🍞 Which of these is something yeast does not need? (a) vinegar (b) sugar (c) time (d) warm water
26. 26.🧺 Which of these is not needed for growing salt crystals? (a) a balloon (b) a shallow dish (c) warm water (d) salt
27. 27.🧺 Do we need a mirror for the muddy water filter? (a) not needed (b) needed
28. 28.True or false: an adult with an iron is needed for the secret lemon message. (a) False (b) True
29. 29.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) in a busy doorway (c) safe from small children (d) next to the baby
30. 30.True or false: plain water is a base. (a) False (b) True
31. 31.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a balloon (b) dry yeast (c) a comb (d) a small bottle
32. 32.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is the one thing we change? (a) the amount of salt (b) the amount of water (c) the same dish (d) sunny or shady place
33. 33.🧺 Which of these is not needed for the yeast balloon? (a) a small bottle (b) a balloon (c) a mirror (d) warm water
34. 34.True or false: white paper strips is not needed for the turmeric test. (a) False (b) True
35. 35.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a bowl (b) a timer (c) yeast (d) cold water to rinse
36. 36.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a balloon (b) a tray for spills (c) a funnel or spoon (d) a comb
37. 37.🫧 Which of these is a base? (a) tamarind water (b) baking soda water (c) plain water (d) sugar water
38. 38.True or false: orange juice is neutral. (a) False (b) True
39. 39.🍋 Which of these steps is a job for an adult? (a) cutting the lemon (b) dipping the cotton bud (c) writing the message (d) reading the message
40. 40.🪴 Through which part does a plant take in water from the soil? (a) the roots (b) the flowers (c) the leaves (d) the fruits

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids