Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 450 · 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 leafy bag test. Which one is NOT needed? (a) sunlight (b) a potted plant (c) a clear plastic bag (d) a battery cell
2. 2.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is kept the same? (a) the amount of vinegar (b) spoons of baking soda (c) size of the balloon
3. 3.🧺 Do we need a battery cell for the leafy bag test? (a) needed (b) not needed
4. 4.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) detergent water (d) lemon juice
5. 5.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a seed (b) a balloon (c) an empty bottle (d) a tray for spills
6. 6.🧺 Which of these is needed for the secret lemon message? (a) turmeric powder (b) a mirror (c) an adult with an iron (d) a battery cell
7. 7.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) germs are invisible (c) clear water is sweet (d) clear water is salty
8. 8.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) freezing water (c) melting ice (d) cooking an egg
9. 9.🌱 Which of these is needed for a seed to sprout? (a) soil (b) warmth (c) sugar (d) sunlight
10. 10.True or false: white paper is needed for the secret lemon message. (a) False (b) True
11. 11.🔍 What do you see inside the plastic bag after a few hours in the sun? (a) tiny water drops (b) salt crystals (c) nothing at all (d) tiny insects
12. 12.🧺 Do we need cotton wool for sprouting seeds? (a) needed (b) not needed
13. 13.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is the one thing we change. (a) True (b) False
14. 14.⚖️ 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
15. 15.🔍 Which is the odd one out? (a) detergent water (b) orange juice (c) soap solution (d) baking soda water
16. 16.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is what we measure? (a) how dark the writing is (b) the kind of juice (c) the iron setting (d) the ironing time
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) False (b) True
18. 18.🔍 Which is the odd one out? (a) orange juice (b) detergent water (c) lemon juice (d) tamarind water
19. 19.🧈 What is the watery liquid left after the butter forms? (a) vinegar (b) oil (c) honey (d) buttermilk
20. 20.🔮 Predict: you wait 2 hours instead of 10 minutes. What happens? (a) the balloon is bigger (b) it shrinks to nothing (c) it turns to bread (d) the balloon is smaller
21. 21.🍋 What colour does the lemon writing turn when an adult warms it? (a) green (b) white (c) brown (d) blue
22. 22.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) melting butter (c) baking a cake (d) browning lemon ink
23. 23.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
24. 24.🧺 Do we need a magnet for growing salt crystals? (a) needed (b) not needed
25. 25.🧺 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
26. 26.🫗 Which of these is done by filtering? (a) salt from sea water (b) sugar from sugar water (c) mud from water (d) gravel from fine sand
27. 27.🧺 Which of these is needed for the leafy bag test? (a) turmeric powder (b) yeast (c) a rubber band (d) vinegar
28. 28.True or false: turmeric powder is not needed for making butter. (a) False (b) True
29. 29.🫧 Is salt water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
30. 30.True or false: orange juice is an acid. (a) True (b) False
31. 31.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a rubber band (b) a few hours (c) a potted plant (d) a mirror
32. 32.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a spoon (c) a piece of string (d) yeast
33. 33.🛟 What should you do after touching soil or seeds? (a) skip washing (b) wash your hands (c) lick your fingers (d) rub your eyes
34. 34.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) neutral (c) an acid
35. 35.🧺 Do we need water for the turmeric test? (a) needed (b) not needed
36. 36.📘 What is yeast? (a) a kind of stone (b) a kind of sugar (c) a tiny living fungus (d) a kind of salt
37. 37.🟡 Which of these turns turmeric reddish-brown? (a) baking soda water (b) tamarind water (c) salt water (d) plain water
38. 38.🫗 Why does filtered muddy water look clearer? (a) the mud dissolves (b) the filter traps mud (c) the water evaporates (d) the filter adds soap
39. 39.🍞 Does yeast need warm water to make gas? (a) yeast does not need it (b) yeast needs it
40. 40.🧺 Do we need a seed for the fizzy balloon? (a) needed (b) not needed

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