Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 188 · 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.🫧 Which of these is an acid? (a) salt water (b) sugar water (c) curd (d) plain water
2. 2.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a balloon (c) a funnel (d) muddy water
3. 3.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a magnet (c) a balloon (d) a shallow dish
4. 4.🛟 What should you do if vinegar splashes in your eye? (a) rub it hard (b) rinse with clean water (c) add baking soda (d) ignore it
5. 5.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) False (b) True
7. 7.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) clearer (c) muddier (d) salty
8. 8.True or false: a magnet is not needed for the leafy bag test. (a) True (b) False
9. 9.🫗 How do we separate husk from rice grain? (a) sieving (b) filtering (c) winnowing (d) evaporating
10. 10.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the iron setting”? (a) we keep it the same (b) we measure it (c) we change it
11. 11.🔮 Predict: you tie a bag on a branch with no leaves. Will it collect much water? (a) it fills with soil (b) much more water (c) exactly the same (d) much less water
12. 12.True or false: a battery cell is needed for the turmeric test. (a) True (b) False
13. 13.True or false: a balloon is not needed for making butter. (a) True (b) False
14. 14.True or false: a magnet is needed for the leafy bag test. (a) False (b) True
15. 15.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we change it (b) we keep it the same (c) we measure it
16. 16.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) water (c) soap solution (d) white paper strips
17. 17.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns yellow again (b) it disappears (c) it turns blue (d) it turns darker red
18. 18.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: size of the balloon is the one thing we change. (a) False (b) True
19. 19.True or false: a cotton bud is not needed for the secret lemon message. (a) True (b) False
20. 20.🔍 Which is the odd one out? (a) cooking an egg (b) freezing water (c) melting butter (d) dissolving salt
21. 21.🍋 Which of these steps is a job a child can do? (a) cutting the lemon (b) ironing the paper (c) putting the iron away (d) reading the message
22. 22.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base
23. 23.True or false: soil is not needed for a seed to sprout. (a) True (b) False
24. 24.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) sand and pebbles (c) a mirror (d) cotton or cloth
25. 25.🔍 Which is the odd one out? (a) plain water (b) baking soda water (c) sugar water (d) salt water
26. 26.🧺 Do we need a small bottle for the yeast balloon? (a) needed (b) not needed
27. 27.🔮 Predict (do not try it): yeast is put in boiling water. What happens? (a) the yeast is killed (b) it glows (c) it grows faster (d) it turns to sugar
28. 28.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) an adult with an iron (b) lemon juice (c) yeast (d) white paper
29. 29.🍞 Why does yeast work slowly in cold water? (a) cold water is heavy (b) cold makes it pink (c) cold kills sugar (d) cold slows yeast down
30. 30.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) baking soda water (d) salt water
31. 31.⚖️ Fair test — do seeds need water to sprout? What do we do with “the same bowls”? (a) we measure it (b) we change it (c) we keep it the same
32. 32.🔍 Which is the odd one out? (a) soap solution (b) vinegar (c) salt water (d) plain water
33. 33.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the amount of vinegar”? (a) we measure it (b) we change it (c) we keep it the same
34. 34.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) freezing water (c) baking a cake (d) melting ice
35. 35.🔍 Which is the odd one out? (a) letting the paper dry (b) writing the message (c) putting the iron away (d) reading the message
36. 36.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a battery cell (c) a spoon (d) a shallow dish
37. 37.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the amount of water”? (a) we measure it (b) we keep it the same (c) we change it
38. 38.🍋 Secret message: who does this step — cutting the lemon? (a) a child can do it (b) an adult does it
39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the colour we see (b) the liquid we test (c) the turmeric paper (d) the number of drops
40. 40.🫧 Is vinegar an acid, a base or neutral? (a) an acid (b) neutral (c) a base

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids