Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 852 · 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 — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the number of drops (b) the colour we see (c) the light we look in (d) the liquid we test
2. 2.🫗 How do we separate small stones from dal? (a) filtering (b) evaporating (c) winnowing (d) handpicking
3. 3.🔍 Which is the odd one out? (a) plain water (b) salt water (c) sugar water (d) vinegar
4. 4.⚖️ 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
5. 5.🧺 Which of these is not needed for the fizzy balloon? (a) a balloon (b) an empty bottle (c) sugar (d) a tray for spills
6. 6.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we change it (b) we keep it the same (c) we measure it
7. 7.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) a battery cell (c) cotton or cloth (d) muddy water
8. 8.🪴 Which part of a plant does this job: take in water from soil? (a) leaves (b) flower (c) stem (d) roots
9. 9.True or false: a magnet is needed for the secret lemon message. (a) True (b) False
10. 10.True or false: turmeric powder is needed for sprouting seeds. (a) True (b) False
11. 11.⚖️ 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
12. 12.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “days to see crystals”? (a) we change it (b) we keep it the same (c) we measure it
13. 13.🪴 Which of these is a job of the stem? (a) take in water from soil (b) carry water upward (c) hold the plant in soil (d) make food in sunlight
14. 14.🧺 Do we need a rubber band for the leafy bag test? (a) not needed (b) needed
15. 15.🧺 Do we need turmeric powder for making butter? (a) not needed (b) needed
16. 16.🫧 Is orange juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base
17. 17.🧺 Which of these is needed for making butter? (a) a magnet (b) yeast (c) a balloon (d) a bowl
18. 18.True or false: time is something yeast does not need. (a) False (b) True
19. 19.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: size of the balloon is kept the same. (a) True (b) False
20. 20.🌱 What comes out of a moong seed first when it sprouts? (a) a tiny root (b) a flower (c) a thorn (d) a fruit
21. 21.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the same bottles”? (a) we keep it the same (b) we measure it (c) we change it
22. 22.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the iron setting is the one thing we change. (a) True (b) False
23. 23.True or false: melting ice is a change that can be undone. (a) False (b) True
24. 24.📘 What do we call a seed starting to grow? (a) pollination (b) germination (c) evaporation (d) condensation
25. 25.True or false: tamarind water keeps turmeric yellow. (a) True (b) False
26. 26.🧺 Which of these is needed for the secret lemon message? (a) a magnet (b) a mirror (c) an adult with an iron (d) yeast
27. 27.🧺 Which of these is needed for the yeast balloon? (a) a comb (b) dry yeast (c) a magnet (d) a battery cell
28. 28.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the amount of water”? (a) we measure it (b) we change it (c) we keep it the same
29. 29.⚖️ Fair test — do seeds need water to sprout? True or false: the same place is kept the same. (a) False (b) True
30. 30.🔮 Predict: which gives more drops in the bag — a hot sunny day or a cool cloudy day? (a) neither of them (b) both the same (c) the hot sunny day (d) the cool cloudy day
31. 31.🔍 Which is the odd one out? (a) sawdust (b) chalk powder (c) small pebbles (d) table salt
32. 32.True or false: plain water keeps turmeric yellow. (a) True (b) False
33. 33.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it turns to sand (b) it floats on top (c) it sinks to the bottom (d) it dissolves
34. 34.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns blue (c) it turns green (d) it stays yellow
35. 35.🔍 Which is the odd one out? (a) sunlight (b) salt (c) warmth (d) soil
36. 36.True or false: plugging in the iron is a job a child can do. (a) True (b) False
37. 37.True or false: a comb is not needed for the turmeric test. (a) False (b) True
38. 38.🧺 Do we need cold water to rinse for making butter? (a) needed (b) not needed
39. 39.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the water temperature is what we measure. (a) True (b) False
40. 40.True or false: boiled seeds does not sprout. (a) False (b) True

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