Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 29 · 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 the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) water (c) a balloon (d) soap solution
2. 2.True or false: baking soda is not needed for the fizzy balloon. (a) True (b) False
3. 3.True or false: a battery cell is not needed for the leafy bag test. (a) True (b) False
4. 4.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it stays yellow (c) it turns green (d) it turns blue
5. 5.⚖️ Fair test — do seeds need water to sprout? What do we do with “the kind of seeds”? (a) we keep it the same (b) we measure it (c) we change it
6. 6.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the ironing time is kept the same. (a) True (b) False
7. 7.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “time to make butter”? (a) we measure it (b) we keep it the same (c) we change it
8. 8.🧈 Can this change be undone: dissolving salt? (a) cannot be undone (b) can be undone
9. 9.🧺 Do we need sugar for the yeast balloon? (a) needed (b) not needed
10. 10.🎈 Why does the balloon blow up? (a) outside air gets in (b) vinegar is hot (c) gas is made inside (d) the bottle shrinks
11. 11.🧈 Can this change be undone: melting butter? (a) can be undone (b) cannot be undone
12. 12.🔮 Can the brown writing go back to being invisible? (a) yes, in the dark (b) no, it stays brown (c) yes, if shaken (d) yes, if cooled
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we measure it (c) we keep it the same
14. 14.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the size of the plant”? (a) we measure it (b) we keep it the same (c) we change it
15. 15.True or false: make food in sunlight is a job of the leaves. (a) True (b) False
16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
17. 17.🧺 Do we need a magnet for the yeast balloon? (a) not needed (b) needed
18. 18.🧺 Which of these is needed for the yeast balloon? (a) a battery cell (b) a balloon (c) turmeric powder (d) a comb
19. 19.True or false: small pebbles dissolves in water. (a) True (b) False
20. 20.🛟 Why must children keep their fingers away from the iron? (a) it is cold (b) it is magnetic (c) it can burn skin (d) it is sticky
21. 21.🧺 Which of these is needed for making butter? (a) a battery cell (b) yeast (c) a bowl (d) turmeric powder
22. 22.True or false: baking soda water turns turmeric reddish-brown. (a) False (b) True
23. 23.🔮 Predict: seeds on wet cotton are kept in a dark cupboard. Will they sprout? (a) they melt (b) they turn to stones (c) no, never (d) yes, they sprout
24. 24.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the same bottle is what we measure. (a) True (b) False
25. 25.True or false: make seeds is a job of the roots. (a) False (b) True
26. 26.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) sugar water (c) baking soda water (d) tamarind water
27. 27.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) salty (c) clearer (d) muddier
28. 28.🫧 Which of these is a base? (a) tamarind water (b) lemon juice (c) baking soda water (d) orange juice
29. 29.🧺 Which of these is not needed for the secret lemon message? (a) lemon juice (b) an adult with an iron (c) a magnet (d) white paper
30. 30.🫗 How do we separate bad grains from rice? (a) winnowing (b) filtering (c) handpicking (d) sieving
31. 31.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) yeast (b) lemon juice (c) white paper (d) a small bowl
32. 32.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: the cream temperature is what we measure. (a) True (b) False
33. 33.🎈 What blows up the balloon in the yeast experiment? (a) air from outside (b) steam (c) smoke (d) carbon dioxide gas
34. 34.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the ironing time”? (a) we change it (b) we keep it the same (c) we measure it
35. 35.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns blue (b) it turns yellow again (c) it turns darker red (d) it disappears
36. 36.🔮 Predict: you tie a bag on a branch with no leaves. Will it collect much water? (a) exactly the same (b) it fills with soil (c) much more water (d) much less water
37. 37.🔍 Which is the odd one out? (a) vinegar (b) detergent water (c) sugar water (d) tamarind water
38. 38.🔍 Which is the odd one out? (a) warm water (b) salt (c) time (d) sugar
39. 39.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) rusting iron (c) dissolving salt (d) melting ice
40. 40.🧈 Which of these is a change that can be undone? (a) baking a cake (b) rusting iron (c) melting butter (d) milk turning to curd

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