Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 689 · 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 needed for growing salt crystals? (a) turmeric powder (b) salt (c) yeast (d) a mirror
2. 2.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed
3. 3.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is what we measure? (a) the amount of yeast (b) size of the balloon (c) the amount of sugar (d) the water temperature
4. 4.True or false: a mirror is needed for the secret lemon message. (a) False (b) True
5. 5.True or false: a battery cell is not needed for the turmeric test. (a) False (b) True
6. 6.🔍 Which is the odd one out? (a) baking soda water (b) plain water (c) soap solution (d) detergent water
7. 7.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: size of the balloon is what we measure. (a) True (b) False
8. 8.True or false: soil is not needed for a seed to sprout. (a) False (b) True
9. 9.🟡 Which of these keeps turmeric yellow? (a) plain water (b) soap solution (c) baking soda water (d) detergent water
10. 10.🌱 Which of these is needed for a seed to sprout? (a) sunlight (b) sugar (c) soil (d) air
11. 11.🛟 Which safety rule fits the fizzy balloon experiment? (a) keep it away from eyes (b) put it in your mouth (c) seal it in a glass jar (d) shake it near your face
12. 12.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) soap solution (d) salt water
13. 13.True or false: glucose powder dissolves in water. (a) False (b) True
14. 14.🫧 Which of these is a base? (a) baking soda water (b) sugar water (c) lemon juice (d) curd
15. 15.True or false: a mirror is needed for the leafy bag test. (a) True (b) False
16. 16.🧺 Which of these is needed for the secret lemon message? (a) a mirror (b) a magnet (c) a balloon (d) lemon juice
17. 17.🔮 Predict: you wait 2 hours instead of 10 minutes. What happens? (a) it turns to bread (b) it shrinks to nothing (c) the balloon is bigger (d) the balloon is smaller
18. 18.🫧 Which of these is an acid? (a) baking soda water (b) soap solution (c) plain water (d) orange juice
19. 19.🔮 Can the brown writing go back to being invisible? (a) yes, if cooled (b) yes, if shaken (c) yes, in the dark (d) no, it stays brown
20. 20.🌱 Which of these sprouts in a few days? (a) boiled seeds (b) wet seeds by a window (c) seeds on dry cotton (d) seeds in the freezer
21. 21.True or false: a piece of string is not needed for growing salt crystals. (a) True (b) False
22. 22.⚖️ 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 keep it the same (c) we change it
23. 23.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the same bottle”? (a) we measure it (b) we keep it the same (c) we change it
24. 24.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) baking soda water (d) lemon juice
25. 25.True or false: wet seeds by a window sprouts in a few days. (a) True (b) False
26. 26.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) yes, all of it (b) no, salt passes through (c) it turns to sugar (d) it turns to sand
27. 27.⚖️ 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) days to see crystals (c) sunny or shady place (d) the same dish
28. 28.🧺 Which of these is needed for sprouting seeds? (a) a magnet (b) a battery cell (c) a balloon (d) a few days
29. 29.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a magnet (c) a piece of string (d) turmeric powder
30. 30.🍋 Which of these steps is a job for an adult? (a) putting the iron away (b) letting the paper dry (c) reading the message (d) dipping the cotton bud
31. 31.⚖️ Fair test — do seeds need water to sprout? Which of these is kept the same? (a) the same place (b) how many seeds sprout (c) wet or dry cotton
32. 32.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we measure it (b) we change it (c) we keep it the same
33. 33.True or false: salt water is a base. (a) False (b) True
34. 34.🛟 The water for the yeast should be ___. (a) very salty (b) boiling hot (c) ice cold (d) warm, not hot
35. 35.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) a grown-up (c) the youngest child (d) a friend who is running
36. 36.🧈 Which of these is a change that can be undone? (a) rusting iron (b) cooking an egg (c) melting ice (d) baking a cake
37. 37.🌱 Is warmth needed for a seed to sprout? (a) not needed to sprout (b) needed to sprout
38. 38.True or false: a comb is not needed for the yeast balloon. (a) True (b) False
39. 39.True or false: a magnet is not needed for sprouting seeds. (a) False (b) True
40. 40.True or false: dissolving salt is a change that can be undone. (a) True (b) False

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