Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 985 · 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 fizzy balloon. Which one is NOT needed? (a) baking soda (b) a balloon (c) an empty bottle (d) a magnet
2. 2.True or false: salt water turns turmeric reddish-brown. (a) False (b) True
3. 3.📘 Is the fizzing a sign that a new substance is made? (a) it is only dissolving (b) no, nothing changes (c) it is only melting (d) yes, a new gas forms
4. 4.True or false: a potted plant is not needed for the leafy bag test. (a) False (b) True
5. 5.🛟 Which safety rule fits the fizzy balloon experiment? (a) put it in your mouth (b) seal it in a glass jar (c) shake it near your face (d) keep it away from eyes
6. 6.⚖️ 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 measure it (b) we change it (c) we keep it the same
7. 7.True or false: hold the plant in soil is a job of the leaves. (a) False (b) True
8. 8.🌱 Is sugar needed for a seed to sprout? (a) needed to sprout (b) not needed to sprout
9. 9.True or false: plain water is a base. (a) True (b) False
10. 10.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a jar with a tight lid (b) fresh cream (c) a balloon (d) a bowl
11. 11.True or false: melting butter is a change that can be undone. (a) False (b) True
12. 12.⚖️ Fair test — do seeds need water to sprout? Which of these is kept the same? (a) how many seeds sprout (b) wet or dry cotton (c) the kind of seeds
13. 13.🧺 Do we need a comb for the fizzy balloon? (a) needed (b) not needed
14. 14.🧺 Do we need a mirror for growing salt crystals? (a) not needed (b) needed
15. 15.🌱 Will these sprout: seeds on dry cotton? (a) sprouts (b) does not sprout
16. 16.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the amount of water”? (a) we keep it the same (b) we change it (c) we measure it
17. 17.🔍 Which is the odd one out? (a) sugar water (b) curd (c) plain water (d) salt water
18. 18.🧺 Which of these is needed for making butter? (a) a magnet (b) a battery cell (c) fresh cream (d) a balloon
19. 19.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) moong seeds (b) cotton wool (c) water (d) a magnet
20. 20.🧂 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
21. 21.True or false: turmeric powder is not needed for the turmeric test. (a) False (b) True
22. 22.🍞 Does yeast need a magnet to make gas? (a) yeast needs it (b) yeast does not need it
23. 23.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “how dark the writing is”? (a) we change it (b) we measure it (c) we keep it the same
24. 24.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it wilts and droops (b) it turns blue (c) it flowers more (d) it grows faster
25. 25.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is what we measure. (a) False (b) True
26. 26.🫧 Which gas fills the balloon in the baking soda and vinegar experiment? (a) hydrogen (b) carbon dioxide (c) helium (d) oxygen
27. 27.⚖️ Fair test — do seeds need water to sprout? True or false: wet or dry cotton is the one thing we change. (a) False (b) True
28. 28.🟡 Which of these keeps turmeric yellow? (a) plain water (b) baking soda water (c) detergent water (d) soap solution
29. 29.True or false: a funnel is not needed for the muddy water filter. (a) False (b) True
30. 30.True or false: soap solution turns turmeric reddish-brown. (a) False (b) True
31. 31.🧺 Which of these is not needed for the secret lemon message? (a) a cotton bud (b) an adult with an iron (c) turmeric powder (d) a small bowl
32. 32.True or false: seeds on dry cotton does not sprout. (a) False (b) True
33. 33.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the same bottles”? (a) we change it (b) we measure it (c) we keep it the same
34. 34.⚖️ 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 change it (b) we measure it (c) we keep it the same
35. 35.🔍 Which is the odd one out? (a) curd (b) orange juice (c) soap solution (d) tamarind water
36. 36.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) dry yeast (b) a magnet (c) sugar (d) warm water
37. 37.🫧 Is plain water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
38. 38.🧈 Can this change be undone: rusting iron? (a) cannot be undone (b) can be undone
39. 39.🔮 Predict: the jar is filled right to the top with cream. What happens? (a) it turns pink (b) it is much faster (c) it takes much longer (d) it makes salt
40. 40.True or false: orange juice is an acid. (a) False (b) True

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