Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 312 · 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.True or false: a jar with a tight lid is not needed for making butter. (a) False (b) True
2. 2.True or false: vinegar is an acid. (a) False (b) True
3. 3.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone
4. 4.True or false: boiled seeds does not sprout. (a) True (b) False
5. 5.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) turmeric powder (b) a few hours (c) a potted plant (d) a clear plastic bag
6. 6.🧺 Which of these is not needed for making butter? (a) cold water to rinse (b) yeast (c) a jar with a tight lid (d) a timer
7. 7.True or false: a clear plastic bag is not needed for the leafy bag test. (a) False (b) True
8. 8.🧈 Which of these is a change that can be undone? (a) melting butter (b) rusting iron (c) browning lemon ink (d) baking a cake
9. 9.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) soap solution (d) sugar water
10. 10.🫧 Which of these is neutral? (a) orange juice (b) lemon juice (c) sugar water (d) curd
11. 11.True or false: tamarind water keeps turmeric yellow. (a) True (b) False
12. 12.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the kind of balloon is kept the same. (a) False (b) True
13. 13.True or false: sugar water is an acid. (a) False (b) True
14. 14.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we measure it (b) we change it (c) we keep it the same
15. 15.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the iron setting”? (a) we measure it (b) we keep it the same (c) we change it
16. 16.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the water temperature”? (a) we keep it the same (b) we change it (c) we measure it
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is what we measure. (a) False (b) True
18. 18.🧺 Do we need a magnet for the leafy bag test? (a) needed (b) not needed
19. 19.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) the amount of vinegar (b) the kind of balloon (c) spoons of baking soda (d) the same bottle
20. 20.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
21. 21.🧈 Can this change be undone: melting ice? (a) can be undone (b) cannot be undone
22. 22.⚖️ 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
23. 23.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) it stays white (c) reddish-brown (d) green
24. 24.🫧 Is sugar water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
25. 25.🧺 Do we need vinegar for the fizzy balloon? (a) needed (b) not needed
26. 26.True or false: sunlight is needed for the leafy bag test. (a) True (b) False
27. 27.🛟 What should you do if vinegar splashes in your eye? (a) rinse with clean water (b) ignore it (c) add baking soda (d) rub it hard
28. 28.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) it turns sweet (c) few or no crystals (d) crystals grow faster
29. 29.🧺 Do we need a potted plant for the leafy bag test? (a) needed (b) not needed
30. 30.🧺 Do we need turmeric powder for sprouting seeds? (a) not needed (b) needed
31. 31.🔮 Can the brown writing go back to being invisible? (a) yes, if shaken (b) no, it stays brown (c) yes, if cooled (d) yes, in the dark
32. 32.True or false: turmeric powder is needed for the muddy water filter. (a) True (b) False
33. 33.🛟 Why is a plastic jar a good choice for shaking? (a) it is hotter (b) it will not break (c) it is heavier (d) it is magnetic
34. 34.🧺 Do we need a jar with a tight lid for making butter? (a) needed (b) not needed
35. 35.True or false: bad grains from rice is done by filtering. (a) False (b) True
36. 36.True or false: dipping the cotton bud is a job a child can do. (a) False (b) True
37. 37.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a few days (b) water (c) a magnet (d) moong seeds
38. 38.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “how hard we shake”? (a) we measure it (b) we change it (c) we keep it the same
39. 39.True or false: melting butter is a change that can be undone. (a) False (b) True
40. 40.🧂 Which of these does not dissolve in water? (a) table salt (b) baking soda (c) food colour (d) sawdust

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