Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 40 · 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: sugar water turns turmeric reddish-brown. (a) True (b) False
2. 2.🌱 Which of these is needed for a seed to sprout? (a) air (b) soil (c) salt (d) sunlight
3. 3.🔍 Which is the odd one out? (a) air (b) water (c) warmth (d) sunlight
4. 4.🧺 Do we need a mirror for sprouting seeds? (a) needed (b) not needed
5. 5.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
6. 6.True or false: wet seeds by a window does not sprout. (a) True (b) False
7. 7.🔍 What do you see inside the plastic bag after a few hours in the sun? (a) tiny insects (b) salt crystals (c) nothing at all (d) tiny water drops
8. 8.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) spoons of baking soda (b) the kind of balloon (c) the amount of vinegar (d) size of the balloon
9. 9.🫗 How do we separate small stones from dal? (a) sieving (b) filtering (c) handpicking (d) winnowing
10. 10.True or false: turmeric powder is not needed for the secret lemon message. (a) True (b) False
11. 11.🔮 Predict: you stop shaking after only one minute. What do you have? (a) butter lumps (b) cheese (c) still runny cream (d) ghee
12. 12.📘 The browning of lemon juice with heat is a ___ change. (a) magnetic (b) chemical (c) physical (d) musical
13. 13.🧺 Which of these is needed for making butter? (a) cold water to rinse (b) turmeric powder (c) a mirror (d) a battery cell
14. 14.True or false: a potted plant is not needed for the leafy bag test. (a) True (b) False
15. 15.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: size of the balloon is kept the same. (a) False (b) True
16. 16.🛟 What should you do if vinegar splashes in your eye? (a) rub it hard (b) add baking soda (c) rinse with clean water (d) ignore it
17. 17.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the same bottles is kept the same. (a) False (b) True
18. 18.True or false: dipping the cotton bud is a job for an adult. (a) True (b) False
19. 19.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a balloon (b) an empty bottle (c) a mirror (d) a funnel or spoon
20. 20.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) no, salt passes through (b) it turns to sand (c) it turns to sugar (d) yes, all of it
21. 21.True or false: baking a cake is a change that cannot be undone. (a) False (b) True
22. 22.🧺 Which of these is not needed for sprouting seeds? (a) turmeric powder (b) cotton wool (c) water (d) moong seeds
23. 23.🧺 Which of these is needed for the yeast balloon? (a) a comb (b) a battery cell (c) a mirror (d) sugar
24. 24.🧺 Which of these is needed for sprouting seeds? (a) a battery cell (b) yeast (c) a magnet (d) water
25. 25.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a funnel (c) sand and pebbles (d) a mirror
26. 26.🔍 Which is the odd one out? (a) orange juice (b) sugar water (c) vinegar (d) lemon juice
27. 27.🍞 Does yeast need sugar to make gas? (a) yeast needs it (b) yeast does not need it
28. 28.🍋 Why can’t you see the lemon writing once it dries? (a) it turned into air (b) the paper ate it (c) the ink is magnetic (d) dry juice is see-through
29. 29.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the amount of vinegar is kept the same. (a) False (b) True
30. 30.True or false: seeds on wet cotton does not sprout. (a) True (b) False
31. 31.🧺 Do we need a clear plastic bag for the leafy bag test? (a) not needed (b) needed
32. 32.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “spoons of baking soda”? (a) we keep it the same (b) we measure it (c) we change it
33. 33.⚖️ 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 keep it the same (c) we change it
34. 34.🧺 Do we need a mirror for the secret lemon message? (a) needed (b) not needed
35. 35.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) a shallow dish (c) a battery cell (d) warm water
36. 36.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) tamarind water (d) baking soda water
37. 37.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a small bottle (b) warm water (c) a comb (d) dry yeast
38. 38.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a spoon (c) a balloon (d) a piece of string
39. 39.True or false: soap solution is an acid. (a) True (b) False
40. 40.True or false: muddy water is needed for the muddy water filter. (a) True (b) False

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