Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 31 · 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 tray for spills (c) an empty bottle (d) a comb
2. 2.🫧 Which of these is a base? (a) salt water (b) detergent water (c) sugar water (d) lemon juice
3. 3.🧺 Which of these is not needed for making butter? (a) turmeric powder (b) fresh cream (c) a timer (d) cold water to rinse
4. 4.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is what we measure? (a) spoons of baking soda (b) size of the balloon (c) the same bottle (d) the kind of balloon
5. 5.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) white paper strips (c) a comb (d) lemon juice
6. 6.🌱 Which of these is not needed for a seed to sprout? (a) air (b) warmth (c) water (d) soil
7. 7.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) turmeric powder (c) cotton or cloth (d) muddy water
8. 8.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) sunlight (b) a rubber band (c) a magnet (d) a few hours
9. 9.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: time to make butter is kept the same. (a) True (b) False
10. 10.🌱 Which of these does not sprout? (a) boiled seeds (b) wet seeds in the dark (c) wet seeds by a window (d) seeds on wet cotton
11. 11.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the kind of balloon is kept the same. (a) False (b) True
12. 12.🔍 Which is the odd one out? (a) chalk powder (b) small pebbles (c) cooking oil (d) food colour
13. 13.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) days to see crystals (b) sunny or shady place (c) the same dish
14. 14.True or false: food colour dissolves in water. (a) False (b) True
15. 15.🛟 What should you do after touching soil or seeds? (a) wash your hands (b) rub your eyes (c) lick your fingers (d) skip washing
16. 16.🧂 Does glucose powder dissolve in water? (a) dissolves in water (b) does not dissolve
17. 17.🫗 How do we separate salt from sea water? (a) handpicking (b) filtering (c) sieving (d) evaporating
18. 18.🛟 Lemon juice stings cuts and eyes. What should you do after the experiment? (a) rub your eyes (b) lick your fingers (c) skip washing (d) wash your hands
19. 19.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “how hard we shake”? (a) we measure it (b) we keep it the same (c) we change it
20. 20.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the kind of juice”? (a) we measure it (b) we keep it the same (c) we change it
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is the one thing we change. (a) False (b) True
22. 22.True or false: an empty bottle is needed for the fizzy balloon. (a) False (b) True
23. 23.🪴 Which of these is a job of the roots? (a) make food in sunlight (b) give out water vapour (c) make seeds (d) hold the plant in soil
24. 24.🛟 The water for the yeast should be ___. (a) very salty (b) ice cold (c) boiling hot (d) warm, not hot
25. 25.🔮 Predict: you write with plain water instead of lemon juice. What appears after ironing? (a) almost nothing (b) dark brown words (c) a rainbow (d) blue words
26. 26.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: size of the balloon is what we measure. (a) False (b) True
27. 27.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) soap solution (c) a balloon (d) water
28. 28.True or false: salt is something yeast needs. (a) False (b) True
29. 29.🍋 Secret message: who does this step — putting the iron away? (a) a child can do it (b) an adult does it
30. 30.🍞 Does yeast need sugar to make gas? (a) yeast needs it (b) yeast does not need it
31. 31.True or false: sugar dissolves in water. (a) False (b) True
32. 32.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) moong seeds (b) a mirror (c) a small bowl (d) cotton wool
33. 33.🍋 Why does the lemon writing turn brown with heat? (a) paper turns lemony (b) the juice scorches first (c) heat adds colour (d) the iron is brown
34. 34.🍞 Which of these is something yeast does not need? (a) time (b) warm water (c) sugar (d) a magnet
35. 35.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) a magnet (c) sand and pebbles (d) muddy water
36. 36.True or false: a small bowl is needed for the secret lemon message. (a) False (b) True
37. 37.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) yeast (c) a shallow dish (d) warm water
38. 38.True or false: tamarind water is a base. (a) True (b) False
39. 39.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the same glass (b) how clear the water is (c) the filter material (d) the same funnel
40. 40.🧈 What is the watery liquid left after the butter forms? (a) buttermilk (b) oil (c) honey (d) vinegar

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