Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 261 · 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 — do seeds need water to sprout? What do we do with “the kind of seeds”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.🧺 Which of these is needed for making butter? (a) turmeric powder (b) a balloon (c) fresh cream (d) a mirror
3. 3.True or false: a balloon is needed for the fizzy balloon. (a) False (b) True
4. 4.True or false: sugar is something yeast does not need. (a) True (b) False
5. 5.True or false: a comb is needed for the yeast balloon. (a) False (b) True
6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the light we look in (c) the liquid we test (d) the colour we see
7. 7.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) turmeric powder (c) white paper strips (d) yeast
8. 8.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we measure it (b) we change it (c) we keep it the same
9. 9.🌱 Which of these is not needed for a seed to sprout? (a) sunlight (b) water (c) warmth (d) air
10. 10.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) a cotton bud (b) a small bowl (c) lemon juice (d) a battery cell
11. 11.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a mirror (b) vinegar (c) baking soda (d) a funnel or spoon
12. 12.🔍 Which is the odd one out? (a) vinegar (b) salt water (c) lemon juice (d) detergent water
13. 13.True or false: yeast is not needed for the leafy bag test. (a) True (b) False
14. 14.🧺 Which of these is not needed for sprouting seeds? (a) water (b) turmeric powder (c) cotton wool (d) a small bowl
15. 15.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is what we measure? (a) size of the balloon (b) spoons of baking soda (c) the amount of vinegar (d) the same bottle
16. 16.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it grows faster (b) it turns blue (c) it flowers more (d) it wilts and droops
17. 17.True or false: a funnel or spoon is not needed for the fizzy balloon. (a) False (b) True
18. 18.🌱 Which of these sprouts in a few days? (a) boiled seeds (b) seeds on wet cotton (c) seeds in the freezer (d) seeds on dry cotton
19. 19.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) reddish (b) bright blue (c) white at once (d) green
20. 20.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the same kind of bag”? (a) we keep it the same (b) we change it (c) we measure it
21. 21.🧂 Why do crystals appear as the dish dries? (a) salt eats water (b) water evaporates (c) the dish melts (d) salt grows roots
22. 22.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the kind of plant is kept the same. (a) False (b) True
23. 23.🫧 Is curd an acid, a base or neutral? (a) an acid (b) neutral (c) a base
24. 24.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: how hard we shake is kept the same. (a) False (b) True
25. 25.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a magnet (b) soap solution (c) lemon juice (d) water
26. 26.🔍 Which is the odd one out? (a) plugging in the iron (b) ironing the paper (c) dipping the cotton bud (d) putting the iron away
27. 27.🧈 Can this change be undone: freezing water? (a) can be undone (b) cannot be undone
28. 28.🧺 Which of these is not needed for the yeast balloon? (a) warm water (b) a battery cell (c) sugar (d) dry yeast
29. 29.🧺 Do we need a few hours for the leafy bag test? (a) not needed (b) needed
30. 30.🔮 Predict: you cover the dish so no water can escape. What happens? (a) crystals grow faster (b) few or no crystals (c) it turns sweet (d) it fizzes
31. 31.🛟 What should you do after handling muddy water? (a) nothing is needed (b) lick your fingers (c) wash hands afterwards (d) wipe hands on face
32. 32.⚖️ 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 measure it (b) we keep it the same (c) we change it
33. 33.🫧 Which of these is neutral? (a) orange juice (b) baking soda water (c) sugar water (d) curd
34. 34.🍋 Which of these steps is a job for an adult? (a) reading the message (b) writing the message (c) putting the iron away (d) dipping the cotton bud
35. 35.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the mud (b) the water (c) nothing (d) the salt
36. 36.🔍 Which is the odd one out? (a) cooking an egg (b) freezing water (c) folding paper (d) melting ice
37. 37.True or false: a potted plant is needed for the leafy bag test. (a) True (b) False
38. 38.🔮 Predict: the jar is filled right to the top with cream. What happens? (a) it makes salt (b) it turns pink (c) it takes much longer (d) it is much faster
39. 39.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the same cotton bud”? (a) we measure it (b) we change it (c) we keep it the same
40. 40.🧺 Do we need a battery cell for the leafy bag test? (a) needed (b) not needed

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