Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 937 · 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 steps is a job for an adult? (a) letting the paper dry (b) reading the message (c) plugging in the iron (d) writing the message
2. 2.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
3. 3.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns blue (b) it stays yellow (c) it turns red (d) it turns black
4. 4.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “sun or shade”? (a) we change it (b) we keep it the same (c) we measure it
5. 5.🔍 Which is the odd one out? (a) sugar (b) warm water (c) time (d) sunlight
6. 6.🫗 How do we separate husk from rice grain? (a) filtering (b) sieving (c) winnowing (d) handpicking
7. 7.🍋 Which of these steps is a job for an adult? (a) dipping the cotton bud (b) writing the message (c) reading the message (d) ironing the paper
8. 8.🧈 Can this change be undone: browning lemon ink? (a) cannot be undone (b) can be undone
9. 9.True or false: a funnel is not needed for the muddy water filter. (a) True (b) False
10. 10.🧺 Do we need a paper clip for the yeast balloon? (a) needed (b) not needed
11. 11.🫧 Is tamarind water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
12. 12.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the same cotton bud”? (a) we change it (b) we measure it (c) we keep it the same
13. 13.🧈 Which tool is used in many Indian homes to churn curd into butter? (a) a mathani (churner) (b) a pressure cooker (c) a sieve (d) a rolling pin
14. 14.🪴 Which part of a plant does this job: give out water vapour? (a) roots (b) leaves (c) flower (d) stem
15. 15.🧺 Do we need turmeric powder for the secret lemon message? (a) needed (b) not needed
16. 16.🔮 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 less water (d) much more water
17. 17.⚖️ 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
18. 18.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of yeast is the one thing we change. (a) True (b) False
19. 19.🪴 Which part of a plant does this job: make food in sunlight? (a) leaves (b) flower (c) stem (d) roots
20. 20.🧺 Which of these is not needed for the fizzy balloon? (a) a funnel or spoon (b) a tray for spills (c) a seed (d) baking soda
21. 21.True or false: lemon juice keeps turmeric yellow. (a) False (b) True
22. 22.🧺 Do we need a rubber band for the leafy bag test? (a) not needed (b) needed
23. 23.True or false: salt water turns turmeric reddish-brown. (a) False (b) True
24. 24.True or false: melting ice is a change that cannot be undone. (a) False (b) True
25. 25.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) safe from small children (c) next to the baby (d) on the edge of a table
26. 26.True or false: sunlight is not needed for the leafy bag test. (a) True (b) False
27. 27.🧺 Which of these is not needed for the yeast balloon? (a) a balloon (b) a comb (c) dry yeast (d) warm water
28. 28.🧺 Do we need yeast for making butter? (a) needed (b) not needed
29. 29.🪴 Which part of a plant does this job: hold the plant in soil? (a) roots (b) flower (c) leaves (d) stem
30. 30.🧺 Do we need an empty bottle for the fizzy balloon? (a) not needed (b) needed
31. 31.True or false: reading the message is a job a child can do. (a) True (b) False
32. 32.True or false: a battery cell is not needed for the fizzy balloon. (a) True (b) False
33. 33.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a mirror (b) a clean glass (c) sand and pebbles (d) a funnel
34. 34.True or false: a balloon is needed for the yeast balloon. (a) False (b) True
35. 35.True or false: water is needed for sprouting seeds. (a) False (b) True
36. 36.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
37. 37.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it wilts and droops (b) it grows faster (c) it turns blue (d) it flowers more
38. 38.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a balloon (c) a mirror (d) white paper strips
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.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed

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