Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 991 · 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.🫧 Is detergent water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
2. 2.🫧 Which of these is neutral? (a) vinegar (b) baking soda water (c) lemon juice (d) salt water
3. 3.🧂 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
4. 4.🛟 The water for the yeast should be ___. (a) ice cold (b) boiling hot (c) very salty (d) warm, not hot
5. 5.🪴 Which part of a plant does this job: hold up the leaves? (a) leaves (b) roots (c) flower (d) stem
6. 6.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) a balloon (c) sand and pebbles (d) a funnel
7. 7.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) sip each liquid (c) mix bathroom cleaners (d) use only kitchen items
8. 8.True or false: cooking oil dissolves in water. (a) False (b) True
9. 9.🧺 Do we need yeast for the secret lemon message? (a) not needed (b) needed
10. 10.🔮 Predict: you leave out the sugar. What happens to the balloon? (a) it grows very little (b) it grows much faster (c) it turns yellow (d) it bursts at once
11. 11.True or false: plain water turns turmeric reddish-brown. (a) False (b) True
12. 12.True or false: warm water is needed for growing salt crystals. (a) True (b) False
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we change it (c) we keep it the same
14. 14.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: time to make butter is kept the same. (a) True (b) False
15. 15.🧺 Which of these is not needed for sprouting seeds? (a) moong seeds (b) a small bowl (c) cotton wool (d) a battery cell
16. 16.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) cooking an egg (c) melting butter (d) milk turning to curd
17. 17.🧺 Which of these is needed for the fizzy balloon? (a) a magnet (b) a comb (c) sugar (d) baking soda
18. 18.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) days to see crystals (b) the amount of salt (c) the kind of salt (d) sunny or shady place
19. 19.🧈 Which tool is used in many Indian homes to churn curd into butter? (a) a rolling pin (b) a mathani (churner) (c) a pressure cooker (d) a sieve
20. 20.🔮 Predict: you use more vinegar and more baking soda. What happens to the balloon? (a) there is no change (b) it turns blue (c) it shrinks (d) it grows bigger
21. 21.True or false: a balloon is needed for the fizzy balloon. (a) False (b) True
22. 22.🟡 Which of these turns turmeric reddish-brown? (a) detergent water (b) vinegar (c) plain water (d) sugar water
23. 23.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we keep it the same (b) we measure it (c) we change it
24. 24.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
25. 25.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) how clear the water is (b) the same glass (c) the filter material (d) the amount poured
26. 26.🔍 Which is the odd one out? (a) sawdust (b) sugar (c) sand (d) small pebbles
27. 27.🔮 Predict: seeds on wet cotton are kept in a dark cupboard. Will they sprout? (a) they turn to stones (b) they melt (c) yes, they sprout (d) no, never
28. 28.True or false: a mirror is not needed for the leafy bag test. (a) False (b) True
29. 29.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it turns black (c) it stays yellow (d) it turns red
30. 30.🧺 Which of these is not needed for making butter? (a) a battery cell (b) fresh cream (c) a bowl (d) cold water to rinse
31. 31.🧺 Which of these is needed for the muddy water filter? (a) sand and pebbles (b) yeast (c) a magnet (d) a battery cell
32. 32.True or false: a shallow dish is needed for growing salt crystals. (a) False (b) True
33. 33.🧺 Which of these is not needed for the leafy bag test? (a) a potted plant (b) yeast (c) a clear plastic bag (d) sunlight
34. 34.True or false: vinegar is neutral. (a) False (b) True
35. 35.🫧 Is vinegar an acid, a base or neutral? (a) an acid (b) a base (c) neutral
36. 36.⚖️ Fair test — do seeds need water to sprout? True or false: the same bowls is kept the same. (a) True (b) False
37. 37.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a comb (c) white paper strips (d) a battery cell
38. 38.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the same bottles is the one thing we change. (a) True (b) False
39. 39.🧺 Do we need sunlight for the leafy bag test? (a) not needed (b) needed
40. 40.True or false: lemon juice is not needed for the turmeric test. (a) False (b) True

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