Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 362 · 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.🧺 Which of these is not needed for the fizzy balloon? (a) a mirror (b) a funnel or spoon (c) baking soda (d) a tray for spills
2. 2.🧺 Do we need a comb for the fizzy balloon? (a) needed (b) not needed
3. 3.🧺 Do we need turmeric powder for the yeast balloon? (a) needed (b) not needed
4. 4.🫗 Which of these is done by handpicking? (a) bran from wheat flour (b) bad grains from rice (c) husk from rice grain (d) mud from water
5. 5.True or false: a cotton bud is not needed for the secret lemon message. (a) True (b) False
6. 6.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
7. 7.True or false: a balloon is needed for the turmeric test. (a) False (b) True
8. 8.True or false: muddy water is needed for the muddy water filter. (a) True (b) False
9. 9.True or false: an adult with an iron is needed for the secret lemon message. (a) False (b) True
10. 10.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the kind of plant”? (a) we keep it the same (b) we change it (c) we measure it
11. 11.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) lemon juice (c) a comb (d) soap solution
12. 12.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) cold water to rinse (b) yeast (c) a bowl (d) a jar with a tight lid
13. 13.📘 What do we call something that changes colour to show an acid or a base? (a) a prism (b) a pulley (c) an indicator (d) a magnet
14. 14.🫧 Is soap solution an acid, a base or neutral? (a) a base (b) neutral (c) an acid
15. 15.⚖️ Fair test — do seeds need water to sprout? What do we do with “the same bowls”? (a) we change it (b) we measure it (c) we keep it the same
16. 16.🧺 Which of these is not needed for making butter? (a) a bowl (b) turmeric powder (c) a jar with a tight lid (d) cold water to rinse
17. 17.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the kind of juice is what we measure. (a) False (b) True
18. 18.True or false: salt is needed for a seed to sprout. (a) True (b) False
19. 19.🧈 Can this change be undone: milk turning to curd? (a) cannot be undone (b) can be undone
20. 20.🍞 Which of these is something yeast does not need? (a) warm water (b) time (c) sugar (d) salt
21. 21.🌱 Will these sprout: wet seeds in the dark? (a) does not sprout (b) sprouts
22. 22.True or false: turmeric powder is needed for the yeast balloon. (a) False (b) True
23. 23.⚖️ 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
24. 24.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) in a busy doorway (c) next to the baby (d) safe from small children
25. 25.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is what we measure. (a) False (b) True
26. 26.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the kind of salt”? (a) we measure it (b) we change it (c) we keep it the same
27. 27.⚖️ Fair test — do seeds need water to sprout? True or false: wet or dry cotton is kept the same. (a) False (b) True
28. 28.🍞 Does yeast need warm water to make gas? (a) yeast does not need it (b) yeast needs it
29. 29.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone
30. 30.🧂 Which of these does not dissolve in water? (a) baking soda (b) table salt (c) food colour (d) cooking oil
31. 31.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “sunny or shady place”? (a) we change it (b) we keep it the same (c) we measure it
32. 32.🔍 Which is the odd one out? (a) reading the message (b) writing the message (c) plugging in the iron (d) letting the paper dry
33. 33.True or false: a magnet is needed for the yeast balloon. (a) False (b) True
34. 34.🍋 Which of these steps is a job a child can do? (a) plugging in the iron (b) cutting the lemon (c) writing the message (d) ironing the paper
35. 35.🧈 Can this change be undone: cooking an egg? (a) can be undone (b) cannot be undone
36. 36.🌱 Which of these sprouts in a few days? (a) seeds in the freezer (b) seeds on wet cotton (c) boiled seeds (d) seeds on dry cotton
37. 37.🔮 Predict: which gives more drops in the bag — a hot sunny day or a cool cloudy day? (a) neither of them (b) the hot sunny day (c) the cool cloudy day (d) both the same
38. 38.🫧 Is curd an acid, a base or neutral? (a) a base (b) neutral (c) an acid
39. 39.🍞 Does yeast need sunlight to make gas? (a) yeast does not need it (b) yeast needs it
40. 40.🧈 Can this change be undone: freezing water? (a) cannot be undone (b) can be undone

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