Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 101 · 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 sprouting seeds. Which one is NOT needed? (a) a battery cell (b) moong seeds (c) a small bowl (d) water
2. 2.🧺 Do we need a balloon for sprouting seeds? (a) needed (b) not needed
3. 3.⚖️ Fair test — do seeds need water to sprout? Which of these is the one thing we change? (a) the same place (b) wet or dry cotton (c) the kind of seeds (d) the number of seeds
4. 4.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) dissolving salt (c) cooking an egg (d) rusting iron
5. 5.True or false: a bowl is not needed for making butter. (a) False (b) True
6. 6.🫗 How do we separate bad grains from rice? (a) handpicking (b) filtering (c) sieving (d) winnowing
7. 7.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the iron setting is what we measure. (a) True (b) False
8. 8.🔮 Predict: you write with plain water instead of lemon juice. What appears after ironing? (a) almost nothing (b) a rainbow (c) dark brown words (d) blue words
9. 9.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: amount of water drops is kept the same. (a) False (b) True
10. 10.🔍 Which is the odd one out? (a) dissolving salt (b) browning lemon ink (c) melting butter (d) folding paper
11. 11.🧺 Which of these is needed for the leafy bag test? (a) a battery cell (b) yeast (c) a magnet (d) a potted plant
12. 12.🌱 Seeds need water, air and ___ to sprout. (a) sugar (b) salt (c) soil (d) warmth
13. 13.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is the one thing we change. (a) True (b) False
14. 14.🧺 Which of these is not needed for the yeast balloon? (a) sugar (b) a paper clip (c) warm water (d) a balloon
15. 15.🧺 Which of these is not needed for the leafy bag test? (a) sunlight (b) a few hours (c) a rubber band (d) vinegar
16. 16.⚖️ 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
17. 17.🪴 Which of these is a job of the leaves? (a) carry water upward (b) take in water from soil (c) make food in sunlight (d) hold the plant in soil
18. 18.🟡 Why does soap solution change turmeric’s colour? (a) soap is hot (b) soap water is a base (c) soap is an acid (d) soap is magnetic
19. 19.True or false: plain water is neutral. (a) True (b) False
20. 20.🔍 Which is the odd one out? (a) tamarind water (b) salt water (c) detergent water (d) sugar water
21. 21.True or false: an adult with an iron is needed for the secret lemon message. (a) True (b) False
22. 22.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the amount of vinegar”? (a) we keep it the same (b) we measure it (c) we change it
23. 23.🧺 Do we need a jar with a tight lid for making butter? (a) not needed (b) needed
24. 24.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is kept the same. (a) False (b) True
25. 25.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the ironing time is the one thing we change. (a) False (b) True
26. 26.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) vinegar (b) baking soda (c) a balloon (d) a magnet
27. 27.True or false: a magnet is needed for the secret lemon message. (a) True (b) False
28. 28.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a balloon (c) a magnet (d) lemon juice
29. 29.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the amount of vinegar is what we measure. (a) False (b) True
30. 30.🔍 Which is the odd one out? (a) a magnet (b) time (c) sugar (d) warm water
31. 31.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a battery cell (b) an empty bottle (c) a funnel or spoon (d) a tray for spills
32. 32.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) a white party dress (c) your best clothes (d) an old shirt or apron
33. 33.⚖️ 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 measure it (b) we change it (c) we keep it the same
34. 34.True or false: baking soda dissolves in water. (a) True (b) False
35. 35.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it turns red (c) it stays yellow (d) it turns black
36. 36.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a magnet (b) fresh cream (c) a bowl (d) cold water to rinse
37. 37.🧺 Do we need a battery cell for the leafy bag test? (a) needed (b) not needed
38. 38.🧈 Can this change be undone: cooking an egg? (a) cannot be undone (b) can be undone
39. 39.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) in a busy doorway (c) next to the baby (d) safe from small children
40. 40.🔮 Predict: you use more vinegar and more baking soda. What happens to the balloon? (a) it grows bigger (b) it shrinks (c) there is no change (d) it turns blue

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