Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 666 · 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.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it stays yellow (c) it turns green (d) it turns blue
2. 2.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is what we measure? (a) the kind of juice (b) the ironing time (c) how dark the writing is (d) the same cotton bud
3. 3.🧈 Which of these is a change that can be undone? (a) rusting iron (b) baking a cake (c) dissolving salt (d) milk turning to curd
4. 4.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) salt (c) turmeric powder (d) a balloon
5. 5.🍞 Which of these is something yeast does not need? (a) warm water (b) time (c) a magnet (d) sugar
6. 6.🟡 Which of these turns turmeric reddish-brown? (a) soap solution (b) vinegar (c) lemon juice (d) salt water
7. 7.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
8. 8.🧺 Which of these is needed for sprouting seeds? (a) a small bowl (b) a balloon (c) turmeric powder (d) a battery cell
9. 9.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) yeast (c) a shallow dish (d) a spoon
10. 10.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the kind of balloon”? (a) we measure it (b) we keep it the same (c) we change it
11. 11.🍋 Which of these steps is a job a child can do? (a) plugging in the iron (b) cutting the lemon (c) ironing the paper (d) writing the message
12. 12.🔮 Predict: the adult irons for only one second. What happens? (a) it gets darker (b) the paper floats (c) writing turns green (d) writing stays faint
13. 13.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) mix bathroom cleaners (c) sip each liquid (d) use only kitchen items
14. 14.🔮 Predict: you use plain water instead of vinegar. What happens? (a) very little fizzing (b) a huge eruption (c) it turns to honey (d) the balloon bursts
15. 15.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the same cotton bud is what we measure. (a) False (b) True
16. 16.True or false: sugar dissolves in water. (a) True (b) False
17. 17.True or false: reading the message is a job a child can do. (a) True (b) False
18. 18.🧺 Do we need a jar with a tight lid for making butter? (a) not needed (b) needed
19. 19.⚖️ Fair test — do seeds need water to sprout? True or false: the same place is what we measure. (a) True (b) False
20. 20.⚖️ Fair test — do seeds need water to sprout? True or false: how many seeds sprout is the one thing we change. (a) True (b) False
21. 21.🧺 Do we need a few days for sprouting seeds? (a) not needed (b) needed
22. 22.🫧 Which of these is an acid? (a) sugar water (b) soap solution (c) vinegar (d) baking soda water
23. 23.🧺 Do we need turmeric powder for the muddy water filter? (a) not needed (b) needed
24. 24.🔍 Which is the odd one out? (a) orange juice (b) salt water (c) vinegar (d) lemon juice
25. 25.🛟 Some seeds from shops are coated with chemicals. What is the safe rule? (a) eat a few to check (b) never put seeds in mouth (c) throw them at friends (d) feed them to pets
26. 26.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) a balloon (c) a magnet (d) a shallow dish
27. 27.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is hot (c) clear water is salty (d) germs are invisible
28. 28.🍋 Which of these steps is a job for an adult? (a) reading the message (b) dipping the cotton bud (c) ironing the paper (d) letting the paper dry
29. 29.🫗 How do we separate mud from water? (a) winnowing (b) filtering (c) handpicking (d) evaporating
30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) False (b) True
31. 31.🧺 Do we need a magnet for the secret lemon message? (a) needed (b) not needed
32. 32.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) a magnet (c) lemon juice (d) turmeric powder
33. 33.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
34. 34.🔍 What do you see inside the plastic bag after a few hours in the sun? (a) tiny water drops (b) tiny insects (c) nothing at all (d) salt crystals
35. 35.⚖️ 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
36. 36.🛟 Who should use the hot iron in the secret message experiment? (a) only an adult (b) the youngest child (c) whoever is fastest (d) any child
37. 37.True or false: mud from water is done by sieving. (a) True (b) False
38. 38.🔍 Which is the odd one out? (a) sunlight (b) warmth (c) salt (d) soil
39. 39.🧺 Which of these is not needed for making butter? (a) yeast (b) a bowl (c) a jar with a tight lid (d) fresh cream
40. 40.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) it stays white (c) reddish-brown (d) green

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