Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 611 · 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.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is kept the same? (a) the water temperature (b) the amount of water (c) size of the balloon
2. 2.🧺 Which of these is not needed for the fizzy balloon? (a) a magnet (b) an empty bottle (c) baking soda (d) a funnel or spoon
3. 3.🔍 Which is the odd one out? (a) writing the message (b) letting the paper dry (c) putting the iron away (d) dipping the cotton bud
4. 4.🔮 Predict: you shake skimmed milk (with almost no cream) instead. What happens? (a) more butter forms (b) it turns blue (c) no butter forms (d) it turns to cheese
5. 5.🧺 Which of these is needed for sprouting seeds? (a) a battery cell (b) a balloon (c) moong seeds (d) turmeric powder
6. 6.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) white paper (b) a small bowl (c) a balloon (d) lemon juice
7. 7.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
8. 8.🔮 Predict: the adult irons for only one second. What happens? (a) writing turns green (b) writing stays faint (c) it gets darker (d) the paper floats
9. 9.🔮 Predict: you use more vinegar and more baking soda. What happens to the balloon? (a) it shrinks (b) it grows bigger (c) it turns blue (d) there is no change
10. 10.🧺 Which of these is needed for the secret lemon message? (a) a mirror (b) turmeric powder (c) a magnet (d) a cotton bud
11. 11.True or false: a mirror is needed for the leafy bag test. (a) True (b) False
12. 12.True or false: soap solution is needed for the turmeric test. (a) False (b) True
13. 13.True or false: sugar is something yeast does not need. (a) False (b) True
14. 14.⚖️ 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 filter material (c) how clear the water is (d) the same muddy water
15. 15.🧺 Do we need a mirror for the muddy water filter? (a) not needed (b) needed
16. 16.True or false: make seeds is a job of the leaves. (a) True (b) False
17. 17.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
18. 18.🫧 Is soap solution an acid, a base or neutral? (a) an acid (b) neutral (c) a base
19. 19.True or false: vinegar is neutral. (a) True (b) False
20. 20.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is what we measure? (a) the size of the plant (b) amount of water drops (c) the time we wait (d) the same kind of bag
21. 21.🧂 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
22. 22.🍋 Why can’t you see the lemon writing once it dries? (a) the paper ate it (b) dry juice is see-through (c) it turned into air (d) the ink is magnetic
23. 23.🧂 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
24. 24.🍞 Which of these is something yeast needs? (a) sunlight (b) warm water (c) salt (d) a magnet
25. 25.🛟 Some seeds from shops are coated with chemicals. What is the safe rule? (a) eat a few to check (b) feed them to pets (c) throw them at friends (d) never put seeds in mouth
26. 26.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) few or no crystals (c) crystals grow faster (d) it turns sweet
27. 27.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
28. 28.🫧 Which of these is neutral? (a) lemon juice (b) tamarind water (c) salt water (d) soap solution
29. 29.🔍 Which is the odd one out? (a) chalk powder (b) sand (c) sugar (d) sawdust
30. 30.🔍 Which is the odd one out? (a) orange juice (b) detergent water (c) soap solution (d) baking soda water
31. 31.🫗 How do we separate tea leaves from tea? (a) evaporating (b) filtering (c) handpicking (d) winnowing
32. 32.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a magnet (b) sugar (c) a balloon (d) dry yeast
33. 33.🔍 Which is the odd one out? (a) time (b) sugar (c) warm water (d) salt
34. 34.🫧 Which of these is a base? (a) curd (b) soap solution (c) salt water (d) sugar water
35. 35.🔍 Which is the odd one out? (a) milk turning to curd (b) baking a cake (c) freezing water (d) browning lemon ink
36. 36.🔍 Which is the odd one out? (a) rusting iron (b) browning lemon ink (c) baking a cake (d) dissolving salt
37. 37.True or false: a mirror is not needed for the yeast balloon. (a) False (b) True
38. 38.🧺 Which of these is not needed for the fizzy balloon? (a) vinegar (b) a balloon (c) a comb (d) a funnel or spoon
39. 39.True or false: putting the iron away is a job for an adult. (a) False (b) True
40. 40.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the kind of juice is what we measure. (a) True (b) False

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