Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 135 · 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.🧺 Do we need a small bowl for sprouting seeds? (a) not needed (b) needed
2. 2.⚖️ 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 liquid we test (c) the colour we see (d) the light we look in
3. 3.🪴 Which part of a plant does this job: give out water vapour? (a) roots (b) leaves (c) stem (d) flower
4. 4.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “size of the balloon”? (a) we keep it the same (b) we measure it (c) we change it
5. 5.🫧 Which of these is neutral? (a) orange juice (b) sugar water (c) baking soda water (d) lemon juice
6. 6.🔍 Which is the odd one out? (a) sugar water (b) plain water (c) tamarind water (d) salt water
7. 7.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a mirror (c) lemon juice (d) soap solution
8. 8.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) reddish-brown (b) bright blue (c) green (d) it stays white
9. 9.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it wilts and droops (b) it turns blue (c) it grows faster (d) it flowers more
10. 10.🧺 Which of these is not needed for the leafy bag test? (a) turmeric powder (b) a clear plastic bag (c) sunlight (d) a few hours
11. 11.True or false: tamarind water is an acid. (a) False (b) True
12. 12.🔍 Which is the odd one out? (a) a magnet (b) salt (c) vinegar (d) time
13. 13.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) browning lemon ink (c) melting butter (d) rusting iron
14. 14.🔮 Predict: seeds on wet cotton are kept in the freezer. What happens? (a) they do not sprout (b) they sprout faster (c) they grow fruit (d) they glow
15. 15.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) white paper (b) lemon juice (c) a mirror (d) a cotton bud
16. 16.🛟 Why must a plastic bag never go over anyone’s head? (a) it gets wet (b) it changes colour (c) it is too big (d) it can block breathing
17. 17.🔮 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
18. 18.📘 What is yeast? (a) a kind of stone (b) a tiny living fungus (c) a kind of salt (d) a kind of sugar
19. 19.🧺 Do we need a mirror for growing salt crystals? (a) not needed (b) needed
20. 20.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed
21. 21.🌱 Which of these sprouts in a few days? (a) seeds on wet cotton (b) boiled seeds (c) seeds in the freezer (d) seeds on dry cotton
22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we measure it (b) we change it (c) we keep it the same
23. 23.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) the same bottle (b) spoons of baking soda (c) size of the balloon (d) the amount of vinegar
24. 24.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a clean glass (c) a mirror (d) a funnel
25. 25.🫧 Which of these is an acid? (a) salt water (b) sugar water (c) baking soda water (d) vinegar
26. 26.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “sun or shade”? (a) we measure it (b) we change it (c) we keep it the same
27. 27.🧺 Which of these is not needed for sprouting seeds? (a) water (b) moong seeds (c) turmeric powder (d) a few days
28. 28.🫧 Which of these is an acid? (a) orange juice (b) baking soda water (c) sugar water (d) detergent water
29. 29.🧺 Which of these is not needed for the fizzy balloon? (a) a tray for spills (b) an empty bottle (c) a comb (d) baking soda
30. 30.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a small bowl (b) moong seeds (c) water (d) a mirror
31. 31.🧺 Do we need a mirror for the muddy water filter? (a) not needed (b) needed
32. 32.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) an old shirt or apron (c) your school uniform (d) your best clothes
33. 33.⚖️ 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 keep it the same (b) we change it (c) we measure it
34. 34.🌱 Seeds need water, air and ___ to sprout. (a) salt (b) soil (c) sugar (d) warmth
35. 35.🧺 Which of these is not needed for growing salt crystals? (a) a battery cell (b) warm water (c) a shallow dish (d) a spoon
36. 36.⚖️ Fair test — do seeds need water to sprout? Which of these is kept the same? (a) wet or dry cotton (b) how many seeds sprout (c) the kind of seeds
37. 37.True or false: reading the message is a job a child can do. (a) False (b) True
38. 38.🧺 Do we need dry yeast for the yeast balloon? (a) not needed (b) needed
39. 39.🧈 What is the watery liquid left after the butter forms? (a) oil (b) buttermilk (c) vinegar (d) honey
40. 40.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a piece of string (c) yeast (d) salt

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