Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 888 · 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.🍋 Secret message: who does this step — cutting the lemon? (a) a child can do it (b) an adult does it
2. 2.True or false: turmeric powder is needed for the secret lemon message. (a) True (b) False
3. 3.🌱 Which of these sprouts in a few days? (a) seeds in the freezer (b) boiled seeds (c) seeds on wet cotton (d) seeds on dry cotton
4. 4.🛟 What should you do after handling muddy water? (a) lick your fingers (b) wipe hands on face (c) wash hands afterwards (d) nothing is needed
5. 5.🔮 Predict: sprouts grow in the dark for a week. What colour are their leaves? (a) dark green (b) pale yellow (c) blue (d) bright red
6. 6.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) a battery cell (c) sand and pebbles (d) a clean glass
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) False (b) True
8. 8.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the same kind of bag is what we measure. (a) True (b) False
9. 9.🧺 Do we need a tray for spills for the fizzy balloon? (a) needed (b) not needed
10. 10.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
11. 11.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a balloon (c) warm water (d) a spoon
12. 12.True or false: yeast is needed for growing salt crystals. (a) False (b) True
13. 13.🧺 Which of these is needed for sprouting seeds? (a) a mirror (b) a magnet (c) turmeric powder (d) cotton wool
14. 14.🫧 Is detergent water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
15. 15.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we measure it (b) we keep it the same (c) we change it
16. 16.🔍 Which is the odd one out? (a) baking soda water (b) salt water (c) sugar water (d) plain water
17. 17.🪴 Which of these is a job of the roots? (a) give out water vapour (b) hold up the leaves (c) hold the plant in soil (d) make food in sunlight
18. 18.🧺 Which of these is needed for the leafy bag test? (a) yeast (b) a mirror (c) a magnet (d) a potted plant
19. 19.🌱 Is water needed for a seed to sprout? (a) needed to sprout (b) not needed to sprout
20. 20.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) a white party dress (c) an old shirt or apron (d) your best clothes
21. 21.🌱 Will these sprout: seeds on dry cotton? (a) does not sprout (b) sprouts
22. 22.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone
23. 23.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is kept the same? (a) the kind of juice (b) the ironing time (c) how dark the writing is
24. 24.📘 Vinegar is an acid and baking soda is a base. What happens when they meet? (a) they react (b) they float apart (c) they become magnets (d) they freeze
25. 25.🔍 Which is the odd one out? (a) sand (b) sawdust (c) sugar (d) small pebbles
26. 26.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a dropper or spoon (c) a battery cell (d) turmeric powder
27. 27.🍋 Which of these steps is a job a child can do? (a) putting the iron away (b) writing the message (c) plugging in the iron (d) ironing the paper
28. 28.🫧 Which of these is a base? (a) curd (b) vinegar (c) soap solution (d) lemon juice
29. 29.True or false: gravel from fine sand is done by winnowing. (a) False (b) True
30. 30.🔍 Which is the odd one out? (a) cutting the lemon (b) reading the message (c) writing the message (d) letting the paper dry
31. 31.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
32. 32.🧺 Do we need a balloon for growing salt crystals? (a) needed (b) not needed
33. 33.🧺 Which of these is needed for the fizzy balloon? (a) a mirror (b) baking soda (c) a battery cell (d) a magnet
34. 34.🔮 Predict: you write with plain water instead of lemon juice. What appears after ironing? (a) blue words (b) a rainbow (c) dark brown words (d) almost nothing
35. 35.True or false: a mirror is not needed for the turmeric test. (a) False (b) True
36. 36.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a bowl (b) a timer (c) a balloon (d) a jar with a tight lid
37. 37.🧺 Which of these is needed for the leafy bag test? (a) yeast (b) vinegar (c) a mirror (d) a clear plastic bag
38. 38.🧈 Which of these is a change that can be undone? (a) baking a cake (b) melting ice (c) cooking an egg (d) milk turning to curd
39. 39.🧺 Do we need a bowl for making butter? (a) needed (b) not needed
40. 40.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) cold water to rinse (b) fresh cream (c) a mirror (d) a jar with a tight lid

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