Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 146 · 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: a bowl is not needed for making butter. (a) True (b) False
2. 2.🧺 Which of these is needed for making butter? (a) turmeric powder (b) a timer (c) a mirror (d) a balloon
3. 3.⚖️ 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 change it (c) we measure it
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) True (b) False
5. 5.🍞 Does yeast need salt to make gas? (a) yeast needs it (b) yeast does not need it
6. 6.⚖️ Fair test — do seeds need water to sprout? Which of these is what we measure? (a) how many seeds sprout (b) wet or dry cotton (c) the same place (d) the kind of seeds
7. 7.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
8. 8.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) moong seeds (b) yeast (c) a few days (d) a small bowl
9. 9.🔍 Which is the odd one out? (a) melting ice (b) dissolving salt (c) folding paper (d) cooking an egg
10. 10.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the time we wait”? (a) we keep it the same (b) we change it (c) we measure it
11. 11.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) a balloon (b) lemon juice (c) an adult with an iron (d) a small bowl
12. 12.🔍 Which is the odd one out? (a) milk turning to curd (b) rusting iron (c) cooking an egg (d) melting butter
13. 13.True or false: soap solution is needed for the turmeric test. (a) True (b) False
14. 14.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
15. 15.📘 Is the fizzing a sign that a new substance is made? (a) no, nothing changes (b) it is only melting (c) it is only dissolving (d) yes, a new gas forms
16. 16.True or false: warm water is something yeast does not need. (a) True (b) False
17. 17.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) sugar crystals form (b) salt crystals form (c) it turns to oil (d) it turns to butter
18. 18.🛟 What should you do after touching soil or seeds? (a) lick your fingers (b) skip washing (c) wash your hands (d) rub your eyes
19. 19.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sniff each bottle hard (c) sip each liquid (d) mix bathroom cleaners
20. 20.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we measure it (b) we keep it the same (c) we change it
21. 21.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “amount of water drops”? (a) we measure it (b) we keep it the same (c) we change it
22. 22.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is the one thing we change? (a) the amount of water (b) sunny or shady place (c) the amount of salt (d) the same dish
23. 23.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is what we measure? (a) the same bottle (b) size of the balloon (c) spoons of baking soda (d) the amount of vinegar
24. 24.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a small bowl (b) a balloon (c) moong seeds (d) water
25. 25.🧺 Do we need cold water to rinse for making butter? (a) needed (b) not needed
26. 26.🧺 Do we need turmeric powder for the muddy water filter? (a) not needed (b) needed
27. 27.🧈 Which of these is a change that cannot be undone? (a) milk turning to curd (b) folding paper (c) melting ice (d) freezing water
28. 28.🧺 Do we need a rubber band for the leafy bag test? (a) not needed (b) needed
29. 29.🧂 Which of these does not dissolve in water? (a) sand (b) table salt (c) glucose powder (d) baking soda
30. 30.🍋 Which of these steps is a job for an adult? (a) putting the iron away (b) reading the message (c) letting the paper dry (d) dipping the cotton bud
31. 31.True or false: lemon juice is not needed for the turmeric test. (a) True (b) False
32. 32.🛟 The water for the yeast should be ___. (a) boiling hot (b) very salty (c) ice cold (d) warm, not hot
33. 33.🫗 Which of these is done by filtering? (a) bad grains from rice (b) tea leaves from tea (c) sugar from sugar water (d) salt from sea water
34. 34.True or false: white paper is needed for the secret lemon message. (a) False (b) True
35. 35.🧺 Do we need turmeric powder for the secret lemon message? (a) not needed (b) needed
36. 36.True or false: time is something yeast does not need. (a) False (b) True
37. 37.⚖️ 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 keep it the same (b) we measure it (c) we change it
38. 38.🧈 Which tool is used in many Indian homes to churn curd into butter? (a) a sieve (b) a rolling pin (c) a pressure cooker (d) a mathani (churner)
39. 39.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) a magnet (c) a dropper or spoon (d) water
40. 40.🌱 Is soil needed for a seed to sprout? (a) needed to sprout (b) not needed to sprout

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