Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 818 · 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: sunlight is needed for a seed to sprout. (a) True (b) False
2. 2.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sip each liquid (c) sniff each bottle hard (d) mix bathroom cleaners
3. 3.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
4. 4.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a small bottle (b) a balloon (c) a magnet (d) dry yeast
5. 5.🧺 Which of these is not needed for the secret lemon message? (a) lemon juice (b) an adult with an iron (c) a magnet (d) a small bowl
6. 6.🔮 Predict: which gives more drops in the bag — a hot sunny day or a cool cloudy day? (a) the hot sunny day (b) the cool cloudy day (c) neither of them (d) both the same
7. 7.True or false: muddy water is not needed for the muddy water filter. (a) True (b) False
8. 8.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) it stays yellow (c) it turns green (d) reddish-brown
9. 9.🍋 Which of these steps is a job a child can do? (a) ironing the paper (b) letting the paper dry (c) cutting the lemon (d) plugging in the iron
10. 10.True or false: soil is not needed for a seed to sprout. (a) True (b) False
11. 11.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is what we measure? (a) the amount of cream (b) the same jar (c) how hard we shake (d) time to make butter
12. 12.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) a battery cell (c) cotton or cloth (d) a magnet
13. 13.⚖️ 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
14. 14.🛟 What should you do if vinegar splashes in your eye? (a) rinse with clean water (b) ignore it (c) rub it hard (d) add baking soda
15. 15.⚖️ 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
16. 16.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
17. 17.True or false: sunlight is needed for the leafy bag test. (a) True (b) False
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) False (b) True
19. 19.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) clear water is salty (c) clear water is sweet (d) germs are invisible
20. 20.🧈 Which of these is a change that can be undone? (a) rusting iron (b) folding paper (c) cooking an egg (d) browning lemon ink
21. 21.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is the one thing we change? (a) the same paper (b) the kind of juice (c) the same cotton bud (d) the ironing time
22. 22.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is kept the same. (a) True (b) False
23. 23.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “spoons of baking soda”? (a) we keep it the same (b) we measure it (c) we change it
24. 24.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is the one thing we change? (a) the same jar (b) time to make butter (c) how hard we shake (d) the cream temperature
25. 25.🧺 Which of these is needed for the secret lemon message? (a) an adult with an iron (b) a mirror (c) a battery cell (d) a magnet
26. 26.🧺 Which of these is needed for the fizzy balloon? (a) sugar (b) a balloon (c) a comb (d) a battery cell
27. 27.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is kept the same? (a) the iron setting (b) how dark the writing is (c) the kind of juice
28. 28.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) water (c) a comb (d) a dropper or spoon
29. 29.🌱 Is air needed for a seed to sprout? (a) needed to sprout (b) not needed to sprout
30. 30.🧺 Do we need turmeric powder for growing salt crystals? (a) needed (b) not needed
31. 31.🧺 Which of these is not needed for the fizzy balloon? (a) a balloon (b) a battery cell (c) a funnel or spoon (d) baking soda
32. 32.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the kind of juice”? (a) we change it (b) we measure it (c) we keep it the same
33. 33.🛟 What should you do after touching soil or seeds? (a) skip washing (b) lick your fingers (c) wash your hands (d) rub your eyes
34. 34.🔮 Predict: you shake skimmed milk (with almost no cream) instead. What happens? (a) it turns to cheese (b) it turns blue (c) no butter forms (d) more butter forms
35. 35.🧈 Can this change be undone: freezing water? (a) can be undone (b) cannot be undone
36. 36.🔍 Which is the odd one out? (a) baking soda water (b) tamarind water (c) vinegar (d) orange juice
37. 37.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the same paper is what we measure. (a) True (b) False
38. 38.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
39. 39.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is what we measure. (a) True (b) False
40. 40.🧺 Which of these is needed for sprouting seeds? (a) water (b) turmeric powder (c) a mirror (d) a battery cell

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