Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 800 · 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.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) it stays white (c) reddish-brown (d) green
2. 2.🧺 Do we need a battery cell for the fizzy balloon? (a) not needed (b) needed
3. 3.🧈 Can this change be undone: freezing water? (a) can be undone (b) cannot be undone
4. 4.True or false: warm water is needed for growing salt crystals. (a) True (b) False
5. 5.⚖️ 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) False (b) True
6. 6.🧺 Do we need a few hours for the leafy bag test? (a) not needed (b) needed
7. 7.🧺 Do we need a balloon for the yeast balloon? (a) not needed (b) needed
8. 8.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: spoons of baking soda is kept the same. (a) True (b) False
9. 9.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) melting butter (c) folding paper (d) milk turning to curd
10. 10.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is kept the same? (a) size of the balloon (b) the kind of balloon (c) spoons of baking soda
11. 11.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) neutral (c) an acid
12. 12.🧺 Do we need a mirror for the leafy bag test? (a) needed (b) not needed
13. 13.True or false: a battery cell is needed for the fizzy balloon. (a) False (b) True
14. 14.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) warm water (c) a shallow dish (d) turmeric powder
15. 15.🔍 Which is the odd one out? (a) sugar water (b) curd (c) tamarind water (d) orange juice
16. 16.⚖️ Fair test — do seeds need water to sprout? True or false: wet or dry cotton is kept the same. (a) True (b) False
17. 17.🧺 Do we need baking soda for the fizzy balloon? (a) not needed (b) needed
18. 18.🧺 Which of these is not needed for the fizzy balloon? (a) a balloon (b) baking soda (c) an empty bottle (d) a comb
19. 19.🧺 Do we need a balloon for making butter? (a) needed (b) not needed
20. 20.True or false: putting the iron away is a job a child can do. (a) False (b) True
21. 21.🫧 Is soap solution an acid, a base or neutral? (a) an acid (b) neutral (c) a base
22. 22.True or false: sugar is needed for the yeast balloon. (a) False (b) True
23. 23.⚖️ Fair test — do seeds need water to sprout? What do we do with “the kind of seeds”? (a) we change it (b) we keep it the same (c) we measure it
24. 24.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we change it (c) we keep it the same
26. 26.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
27. 27.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) sip each liquid (c) mix bathroom cleaners (d) use only kitchen items
28. 28.🫗 Which of these is done by evaporating? (a) chaff from wheat grain (b) bran from wheat flour (c) sugar from sugar water (d) tea leaves from tea
29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the colour we see (b) the turmeric paper (c) the light we look in (d) the liquid we test
30. 30.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: spoons of baking soda is the one thing we change. (a) False (b) True
31. 31.True or false: cotton wool is not needed for sprouting seeds. (a) False (b) True
32. 32.🛟 The water for the yeast should be ___. (a) ice cold (b) boiling hot (c) very salty (d) warm, not hot
33. 33.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) sugar crystals form (b) it turns to oil (c) it turns to butter (d) salt crystals form
34. 34.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) turmeric powder (b) a balloon (c) dry yeast (d) a small bottle
35. 35.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) the amount of salt (b) the amount of water (c) days to see crystals (d) sunny or shady place
36. 36.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) cotton wool (b) water (c) turmeric powder (d) moong seeds
37. 37.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a small bowl (b) moong seeds (c) cotton wool (d) a magnet
38. 38.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) sugar (b) warm water (c) a comb (d) a balloon
39. 39.🫧 Which of these is a base? (a) detergent water (b) salt water (c) orange juice (d) plain water
40. 40.True or false: freezing water is a change that cannot be undone. (a) True (b) False

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