Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 658 · 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 more baking soda blow the balloon up bigger? True or false: the amount of vinegar is the one thing we change. (a) True (b) False
2. 2.🧺 Do we need a mirror for the fizzy balloon? (a) needed (b) not needed
3. 3.🧺 Which of these is needed for the yeast balloon? (a) a battery cell (b) dry yeast (c) a magnet (d) turmeric powder
4. 4.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) sip each liquid (c) use only kitchen items (d) mix bathroom cleaners
5. 5.True or false: ironing the paper is a job a child can do. (a) True (b) False
6. 6.🔍 Which is the odd one out? (a) soap solution (b) lemon juice (c) vinegar (d) tamarind water
7. 7.🧺 Do we need turmeric powder for the secret lemon message? (a) needed (b) not needed
8. 8.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the filter material (b) the same glass (c) the same funnel (d) the same muddy water
9. 9.🍞 Does yeast need salt to make gas? (a) yeast does not need it (b) yeast needs it
10. 10.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the amount of vinegar”? (a) we measure it (b) we change it (c) we keep it the same
11. 11.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the same bottle is the one thing we change. (a) False (b) True
12. 12.True or false: a magnet is something yeast needs. (a) False (b) True
13. 13.True or false: a battery cell is not needed for sprouting seeds. (a) True (b) False
14. 14.🪴 Which part of a plant does this job: hold up the leaves? (a) stem (b) flower (c) leaves (d) roots
15. 15.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
16. 16.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) salt (c) a magnet (d) a piece of string
17. 17.🍞 Does yeast need time to make gas? (a) yeast needs it (b) yeast does not need it
18. 18.🌱 Which of these is needed for a seed to sprout? (a) sunlight (b) air (c) salt (d) sugar
19. 19.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is the one thing we change? (a) the kind of juice (b) the iron setting (c) the same paper (d) the same cotton bud
20. 20.True or false: sunlight is not needed for the leafy bag test. (a) True (b) False
21. 21.⚖️ 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 measure it (c) we keep it the same
22. 22.🍞 Which of these is something yeast needs? (a) sunlight (b) salt (c) vinegar (d) sugar
23. 23.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: amount of water drops is what we measure. (a) True (b) False
24. 24.🧺 Which of these is needed for the muddy water filter? (a) a funnel (b) a balloon (c) turmeric powder (d) yeast
25. 25.🌱 Which of these sprouts in a few days? (a) seeds in the freezer (b) boiled seeds (c) seeds on wet cotton (d) seeds on dry cotton
26. 26.🧂 Which of these does not dissolve in water? (a) table salt (b) sand (c) food colour (d) baking soda
27. 27.⚖️ 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
28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) True (b) False
29. 29.True or false: baking soda water is a base. (a) True (b) False
30. 30.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a comb (b) sugar (c) dry yeast (d) a balloon
31. 31.🧺 Which of these is not needed for sprouting seeds? (a) a balloon (b) a small bowl (c) water (d) cotton wool
32. 32.🍋 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
33. 33.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the same dish”? (a) we change it (b) we keep it the same (c) we measure it
34. 34.🪴 Which part of a plant does this job: take in water from soil? (a) flower (b) leaves (c) stem (d) roots
35. 35.🔍 What do you see after shaking cream in a jar for a long time? (a) sugar crystals (b) lumps of butter (c) bubbles of gas (d) clear water only
36. 36.True or false: an adult with an iron is needed for the secret lemon message. (a) True (b) False
37. 37.🔍 Which is the odd one out? (a) salt water (b) plain water (c) vinegar (d) sugar water
38. 38.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
39. 39.⚖️ 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 water (b) the amount of salt (c) days to see crystals (d) the kind of salt
40. 40.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) cold water to rinse (b) a bowl (c) a timer (d) a mirror

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