Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 110 · 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.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) cold water to rinse (b) turmeric powder (c) a timer (d) fresh cream
2. 2.True or false: salt water turns turmeric reddish-brown. (a) False (b) True
3. 3.True or false: putting the iron away is a job for an adult. (a) True (b) False
4. 4.🧺 Do we need water for sprouting seeds? (a) needed (b) not needed
5. 5.True or false: salt is needed for a seed to sprout. (a) False (b) True
6. 6.🧈 Which tool is used in many Indian homes to churn curd into butter? (a) a mathani (churner) (b) a rolling pin (c) a pressure cooker (d) a sieve
7. 7.True or false: tamarind water is a base. (a) False (b) True
8. 8.🫧 Is orange juice an acid, a base or neutral? (a) neutral (b) a base (c) an acid
9. 9.🍋 Why does the lemon writing turn brown with heat? (a) paper turns lemony (b) the iron is brown (c) heat adds colour (d) the juice scorches first
10. 10.🔍 Which is the odd one out? (a) rusting iron (b) freezing water (c) dissolving salt (d) melting butter
11. 11.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
12. 12.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) wash hands afterwards (c) nothing is needed (d) lick your fingers
13. 13.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: the same jar is kept the same. (a) False (b) True
14. 14.🛟 Why must a plastic bag never go over anyone’s head? (a) it changes colour (b) it can block breathing (c) it is too big (d) it gets wet
15. 15.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) water (b) a battery cell (c) cotton wool (d) moong seeds
16. 16.True or false: yeast is not needed for the muddy water filter. (a) False (b) True
17. 17.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) browning lemon ink (c) dissolving salt (d) baking a cake
18. 18.🧺 Do we need a cotton bud for the secret lemon message? (a) not needed (b) needed
19. 19.🔮 Predict: which gives more drops in the bag — a hot sunny day or a cool cloudy day? (a) the hot sunny day (b) both the same (c) neither of them (d) the cool cloudy day
20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
21. 21.🧈 Can this change be undone: rusting iron? (a) can be undone (b) cannot be undone
22. 22.True or false: sugar from sugar water is done by handpicking. (a) False (b) True
23. 23.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: time to make butter is kept the same. (a) False (b) True
24. 24.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
25. 25.🧺 Which of these is needed for the muddy water filter? (a) a funnel (b) a mirror (c) yeast (d) a balloon
26. 26.🧺 Do we need sunlight for the leafy bag test? (a) needed (b) not needed
27. 27.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “the amount of cream”? (a) we measure it (b) we keep it the same (c) we change it
28. 28.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the kind of balloon is what we measure. (a) True (b) False
29. 29.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) lemon juice (b) white paper (c) a small bowl (d) turmeric powder
30. 30.🔮 Predict: you shake skimmed milk (with almost no cream) instead. What happens? (a) it turns to cheese (b) no butter forms (c) more butter forms (d) it turns blue
31. 31.🧺 Which of these is not needed for the secret lemon message? (a) lemon juice (b) an adult with an iron (c) a small bowl (d) a balloon
32. 32.🔍 Which is the odd one out? (a) sugar (b) small pebbles (c) cooking oil (d) chalk powder
33. 33.🌱 Which of these is needed for a seed to sprout? (a) warmth (b) soil (c) sunlight (d) sugar
34. 34.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a dropper or spoon (c) turmeric powder (d) a battery cell
35. 35.🛟 The water for the yeast should be ___. (a) very salty (b) warm, not hot (c) ice cold (d) boiling hot
36. 36.🔍 Which is the odd one out? (a) baking a cake (b) browning lemon ink (c) rusting iron (d) melting ice
37. 37.🛟 What should you do if vinegar splashes in your eye? (a) ignore it (b) rub it hard (c) rinse with clean water (d) add baking soda
38. 38.🧺 Do we need a battery cell for growing salt crystals? (a) not needed (b) needed
39. 39.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) mix bathroom cleaners (c) sniff each bottle hard (d) sip each liquid
40. 40.🧺 Which of these is needed for the turmeric test? (a) a dropper or spoon (b) a mirror (c) a balloon (d) a battery cell

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