Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 125 · 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 of these is a base? (a) tamarind water (b) salt water (c) plain water (d) baking soda water
2. 2.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) salt water (c) vinegar (d) soap solution
3. 3.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the size of the plant is the one thing we change. (a) False (b) True
4. 4.True or false: sunlight is not needed for a seed to sprout. (a) True (b) False
5. 5.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) an old shirt or apron (c) a white party dress (d) your best clothes
6. 6.True or false: seeds in the freezer sprouts in a few days. (a) False (b) True
7. 7.🧂 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
8. 8.🍋 Secret message: who does this step — letting the paper dry? (a) an adult does it (b) a child can do it
9. 9.True or false: a magnet is needed for the fizzy balloon. (a) False (b) True
10. 10.🧺 Do we need vinegar for the fizzy balloon? (a) not needed (b) needed
11. 11.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the same kind of bag is kept the same. (a) True (b) False
12. 12.True or false: vinegar is not needed for the fizzy balloon. (a) True (b) False
13. 13.🛟 Why must children keep their fingers away from the iron? (a) it is sticky (b) it can burn skin (c) it is cold (d) it is magnetic
14. 14.🧺 Do we need a piece of string for growing salt crystals? (a) not needed (b) needed
15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we keep it the same (c) we change it
16. 16.True or false: lemon juice is needed for the secret lemon message. (a) True (b) False
17. 17.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) germs are invisible (c) clear water is hot (d) clear water is salty
18. 18.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is kept the same. (a) True (b) False
19. 19.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) white paper strips (c) water (d) a battery cell
20. 20.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a jar with a tight lid (b) fresh cream (c) a magnet (d) a bowl
21. 21.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is what we measure? (a) the cream temperature (b) the same jar (c) time to make butter (d) the amount of cream
22. 22.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) nobody needs to (c) a friend who is running (d) a grown-up
23. 23.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a dropper or spoon (c) soap solution (d) a comb
24. 24.🧺 Do we need dry yeast for the yeast balloon? (a) needed (b) not needed
25. 25.🫧 Is curd an acid, a base or neutral? (a) neutral (b) a base (c) an acid
26. 26.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) both stay behind (b) tea stays behind (c) leaves pass through (d) leaves stay behind
27. 27.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) reddish-brown (b) green (c) bright blue (d) it stays white
28. 28.🪴 Which part of a plant does this job: take in water from soil? (a) leaves (b) stem (c) flower (d) roots
29. 29.True or false: make food in sunlight is a job of the roots. (a) True (b) False
30. 30.🫧 Is detergent water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
31. 31.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is kept the same? (a) time to make butter (b) the cream temperature (c) the amount of cream
32. 32.🧺 Do we need a balloon for the fizzy balloon? (a) not needed (b) needed
33. 33.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
34. 34.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the amount of vinegar”? (a) we measure it (b) we change it (c) we keep it the same
35. 35.True or false: moong seeds is needed for sprouting seeds. (a) False (b) True
36. 36.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) muddy water (c) a battery cell (d) cotton or cloth
37. 37.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is the one thing we change? (a) the amount of yeast (b) the amount of sugar (c) the amount of water (d) the water temperature
38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the turmeric paper (c) the liquid we test
39. 39.🛟 How should the plastic bag be tied around the branch? (a) with a hot glue gun (b) as tight as possible (c) with sharp wire (d) gently, not too tight
40. 40.🧺 Which of these is needed for the secret lemon message? (a) yeast (b) an adult with an iron (c) turmeric powder (d) a balloon

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