Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 278 · 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.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a few hours (b) a magnet (c) a rubber band (d) sunlight
2. 2.🔍 Which is the odd one out? (a) sugar (b) warmth (c) salt (d) sunlight
3. 3.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) lemon juice (c) soap solution (d) a magnet
4. 4.🫧 Which of these is an acid? (a) soap solution (b) salt water (c) plain water (d) curd
5. 5.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a small bottle (b) sugar (c) a magnet (d) dry yeast
6. 6.True or false: a funnel or spoon is not needed for the fizzy balloon. (a) True (b) False
7. 7.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) vinegar (d) baking soda water
8. 8.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a funnel (c) a clean glass (d) a battery cell
9. 9.🧺 Which of these is not needed for sprouting seeds? (a) a small bowl (b) water (c) yeast (d) a few days
10. 10.🔍 Which is the odd one out? (a) table salt (b) sawdust (c) sugar (d) baking soda
11. 11.True or false: time is something yeast does not need. (a) True (b) False
12. 12.🔍 Which is the odd one out? (a) salt (b) sugar (c) time (d) warm water
13. 13.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the amount of yeast”? (a) we change it (b) we measure it (c) we keep it the same
14. 14.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns darker red (b) it turns yellow again (c) it turns blue (d) it disappears
15. 15.True or false: yeast is not needed for the turmeric test. (a) True (b) False
16. 16.🧺 Which of these is not needed for the secret lemon message? (a) a balloon (b) white paper (c) a cotton bud (d) a small bowl
17. 17.True or false: tamarind water is an acid. (a) False (b) True
18. 18.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is kept the same? (a) the kind of juice (b) how dark the writing is (c) the iron setting
19. 19.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is what we measure? (a) the amount of vinegar (b) size of the balloon (c) the kind of balloon (d) the same bottle
20. 20.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is what we measure. (a) True (b) False
21. 21.True or false: baking a cake is a change that can be undone. (a) False (b) True
22. 22.🍞 Which of these is something yeast needs? (a) sunlight (b) a magnet (c) warm water (d) salt
23. 23.True or false: vinegar is a base. (a) True (b) False
24. 24.True or false: curd is neutral. (a) True (b) False
25. 25.⚖️ 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 glass (b) the amount poured (c) the filter material (d) the same muddy water
26. 26.True or false: turmeric powder is needed for making butter. (a) True (b) False
27. 27.True or false: a small bottle is not needed for the yeast balloon. (a) True (b) False
28. 28.🛟 Why must the jar lid be screwed on tightly? (a) so air gets out (b) so cream does not spill (c) so it turns yellow (d) so it gets hot
29. 29.True or false: soil is needed for a seed to sprout. (a) False (b) True
30. 30.📘 Vinegar is an acid and baking soda is a base. What happens when they meet? (a) they freeze (b) they react (c) they become magnets (d) they float apart
31. 31.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) sand and pebbles (c) a funnel (d) a balloon
32. 32.⚖️ 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) False (b) True
33. 33.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the filter material (b) the same glass (c) how clear the water is
34. 34.🔍 Which is the odd one out? (a) cooking an egg (b) milk turning to curd (c) browning lemon ink (d) folding paper
35. 35.🧺 Do we need a magnet for the secret lemon message? (a) not needed (b) needed
36. 36.🔮 Predict: you write with plain water instead of lemon juice. What appears after ironing? (a) blue words (b) almost nothing (c) dark brown words (d) a rainbow
37. 37.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the ironing time”? (a) we change it (b) we keep it the same (c) we measure it
38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we keep it the same (c) we measure it
39. 39.True or false: a battery cell is not needed for growing salt crystals. (a) False (b) True
40. 40.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) a balloon (c) a battery cell (d) cotton or cloth

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