Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 252 · 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.True or false: vinegar is neutral. (a) False (b) True
2. 2.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your school uniform (c) your best clothes (d) an old shirt or apron
3. 3.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “sunny or shady place”? (a) we keep it the same (b) we measure it (c) we change it
4. 4.🧺 Do we need a mirror for sprouting seeds? (a) needed (b) not needed
5. 5.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “size of the balloon”? (a) we change it (b) we keep it the same (c) we measure it
6. 6.🪴 Which of these is a job of the roots? (a) carry water upward (b) hold the plant in soil (c) make food in sunlight (d) hold up the leaves
7. 7.True or false: yeast is not needed for growing salt crystals. (a) False (b) True
8. 8.True or false: chaff from wheat grain is done by winnowing. (a) False (b) True
9. 9.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) reddish (c) white at once (d) bright blue
10. 10.🫧 Is orange juice an acid, a base or neutral? (a) an acid (b) a base (c) neutral
11. 11.🧺 Do we need a magnet for the fizzy balloon? (a) not needed (b) needed
12. 12.🔍 Which is the odd one out? (a) sugar water (b) plain water (c) baking soda water (d) salt water
13. 13.🍋 Which of these steps is a job for an adult? (a) letting the paper dry (b) writing the message (c) ironing the paper (d) reading the message
14. 14.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a dropper or spoon (c) a magnet (d) a battery cell
15. 15.🧺 Do we need a seed for the fizzy balloon? (a) needed (b) not needed
16. 16.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a balloon (b) water (c) turmeric powder (d) white paper strips
17. 17.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) lemon juice (b) a small bowl (c) turmeric powder (d) an adult with an iron
18. 18.🔍 Which is the odd one out? (a) plugging in the iron (b) ironing the paper (c) letting the paper dry (d) cutting the lemon
19. 19.🧺 Do we need a clear plastic bag for the leafy bag test? (a) not needed (b) needed
20. 20.True or false: vinegar is needed for the leafy bag test. (a) False (b) True
21. 21.🫧 Is plain water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
22. 22.🫗 How do we separate husk from rice grain? (a) handpicking (b) winnowing (c) filtering (d) sieving
23. 23.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the amount of salt”? (a) we keep it the same (b) we change it (c) we measure it
24. 24.🫗 How do we separate gravel from fine sand? (a) evaporating (b) sieving (c) winnowing (d) filtering
25. 25.🛟 Why is a plastic jar a good choice for shaking? (a) it is hotter (b) it is heavier (c) it is magnetic (d) it will not break
26. 26.🍞 Does yeast need a magnet to make gas? (a) yeast does not need it (b) yeast needs it
27. 27.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) moong seeds (b) water (c) a few days (d) a mirror
28. 28.🔮 Predict: the jar is filled right to the top with cream. What happens? (a) it is much faster (b) it makes salt (c) it takes much longer (d) it turns pink
29. 29.🔍 Which is the odd one out? (a) soil (b) warmth (c) air (d) water
30. 30.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a shallow dish (c) a balloon (d) salt
31. 31.📘 What is yeast? (a) a tiny living fungus (b) a kind of salt (c) a kind of stone (d) a kind of sugar
32. 32.True or false: yeast is not needed for the secret lemon message. (a) True (b) False
33. 33.🔮 Predict: you shake skimmed milk (with almost no cream) instead. What happens? (a) it turns to cheese (b) more butter forms (c) it turns blue (d) no butter forms
34. 34.🫧 Is sugar water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
35. 35.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a clear plastic bag (b) a few hours (c) a battery cell (d) a rubber band
36. 36.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) yeast (b) an adult with an iron (c) lemon juice (d) a small bowl
37. 37.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) turmeric powder (c) a magnet (d) a comb
38. 38.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) muddy water (c) yeast (d) a funnel
39. 39.🌱 Will these sprout: seeds on dry cotton? (a) does not sprout (b) sprouts
40. 40.🔮 Predict: you stop shaking after only one minute. What do you have? (a) butter lumps (b) still runny cream (c) cheese (d) ghee

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