Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 682 · 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.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) sniff each bottle hard (c) mix bathroom cleaners (d) use only kitchen items
2. 2.🧺 Do we need a balloon for the secret lemon message? (a) not needed (b) needed
3. 3.⚖️ Fair test — do seeds need water to sprout? What do we do with “the same place”? (a) we change it (b) we keep it the same (c) we measure it
4. 4.True or false: a mirror is needed for the turmeric test. (a) True (b) False
5. 5.True or false: vinegar is not needed for the fizzy balloon. (a) False (b) True
6. 6.🔍 Which is the odd one out? (a) soap solution (b) vinegar (c) tamarind water (d) lemon juice
7. 7.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed
8. 8.🍋 Secret message: who does this step — dipping the cotton bud? (a) a child can do it (b) an adult does it
9. 9.True or false: give out water vapour is a job of the leaves. (a) False (b) True
10. 10.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves stay behind (b) tea stays behind (c) leaves pass through (d) both stay behind
11. 11.🫧 Is detergent water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
12. 12.🧂 Which of these dissolves in water? (a) chalk powder (b) food colour (c) sand (d) small pebbles
13. 13.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is what we measure. (a) True (b) False
14. 14.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
15. 15.🧺 Which of these is needed for the yeast balloon? (a) a magnet (b) turmeric powder (c) a comb (d) dry yeast
16. 16.🔍 Which is the odd one out? (a) letting the paper dry (b) reading the message (c) cutting the lemon (d) writing the message
17. 17.🧺 Do we need a potted plant for the leafy bag test? (a) not needed (b) needed
18. 18.🪴 Which part of a plant does this job: make seeds? (a) leaves (b) roots (c) flower (d) stem
19. 19.🌱 Which of these is needed for a seed to sprout? (a) sugar (b) sunlight (c) warmth (d) soil
20. 20.📘 What do we call a solution that cannot dissolve any more salt? (a) saturated (b) empty (c) magnetic (d) frozen
21. 21.True or false: a balloon is not needed for the fizzy balloon. (a) True (b) False
22. 22.🫧 Which gas fills the balloon in the baking soda and vinegar experiment? (a) helium (b) hydrogen (c) oxygen (d) carbon dioxide
23. 23.True or false: sugar is not needed for the fizzy balloon. (a) False (b) True
24. 24.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) a cotton bud (b) turmeric powder (c) lemon juice (d) white paper
25. 25.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) yeast (c) a funnel (d) cotton or cloth
26. 26.🧺 Which of these is needed for the leafy bag test? (a) a battery cell (b) a potted plant (c) turmeric powder (d) yeast
27. 27.🛟 How should the plastic bag be tied around the branch? (a) gently, not too tight (b) with sharp wire (c) with a hot glue gun (d) as tight as possible
28. 28.True or false: melting butter is a change that can be undone. (a) True (b) False
29. 29.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is kept the same? (a) sun or shade (b) the same kind of bag (c) amount of water drops
30. 30.🌱 Is air needed for a seed to sprout? (a) needed to sprout (b) not needed to sprout
31. 31.🧺 Do we need a jar with a tight lid for making butter? (a) needed (b) not needed
32. 32.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: the same jar is the one thing we change. (a) True (b) False
33. 33.🧈 Can this change be undone: milk turning to curd? (a) cannot be undone (b) can be undone
34. 34.🧂 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
35. 35.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) yeast (b) a clean glass (c) sand and pebbles (d) a funnel
36. 36.🍞 Which of these is something yeast does not need? (a) time (b) sugar (c) warm water (d) sunlight
37. 37.True or false: a balloon is not needed for the turmeric test. (a) False (b) True
38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the turmeric paper (c) the colour we see
39. 39.🔮 Predict: you write with plain water instead of lemon juice. What appears after ironing? (a) blue words (b) a rainbow (c) almost nothing (d) dark brown words
40. 40.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the kind of juice”? (a) we keep it the same (b) we change it (c) we measure it

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