Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 133 · 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.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the number of drops (c) the turmeric paper (d) the colour we see
2. 2.True or false: a jar with a tight lid is needed for making butter. (a) False (b) True
3. 3.🧈 Can this change be undone: folding paper? (a) can be undone (b) cannot be undone
4. 4.🫧 Which of these is neutral? (a) salt water (b) baking soda water (c) curd (d) detergent water
5. 5.True or false: detergent water keeps turmeric yellow. (a) True (b) False
6. 6.🔮 Can the brown writing go back to being invisible? (a) yes, if shaken (b) yes, if cooled (c) no, it stays brown (d) yes, in the dark
7. 7.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) a clean glass (c) yeast (d) cotton or cloth
8. 8.🧺 Do we need a battery cell for sprouting seeds? (a) not needed (b) needed
9. 9.🧺 Do we need a cotton bud for the secret lemon message? (a) not needed (b) needed
10. 10.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the same bottle is kept the same. (a) True (b) False
11. 11.🍋 Which of these steps is a job a child can do? (a) plugging in the iron (b) letting the paper dry (c) cutting the lemon (d) putting the iron away
12. 12.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same glass (b) how clear the water is (c) the amount poured (d) the filter material
13. 13.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is kept the same. (a) False (b) True
14. 14.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we measure it (b) we change it (c) we keep it the same
15. 15.True or false: a mirror is needed for sprouting seeds. (a) True (b) False
16. 16.🧈 Why does shaking cream make butter? (a) shaking adds salt (b) the jar adds butter (c) fat bits stick together (d) the lid is warm
17. 17.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a dropper or spoon (c) white paper strips (d) a balloon
18. 18.🛟 Where should you keep the crystal dish while it dries? (a) safe from small children (b) on the edge of a table (c) next to the baby (d) in a busy doorway
19. 19.🧺 Which of these is not needed for making butter? (a) a bowl (b) cold water to rinse (c) a magnet (d) a timer
20. 20.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a magnet (b) muddy water (c) a funnel (d) a clean glass
21. 21.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) tea stays behind (c) both stay behind (d) leaves stay behind
22. 22.True or false: yeast is needed for the leafy bag test. (a) True (b) False
23. 23.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) a magnet (c) a mirror (d) muddy water
24. 24.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
25. 25.🧂 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
26. 26.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) melting ice (c) melting butter (d) cooking an egg
27. 27.True or false: melting butter is a change that can be undone. (a) False (b) True
28. 28.🧈 Can this change be undone: cooking an egg? (a) cannot be undone (b) can be undone
29. 29.🛟 After the yeast experiment, what should you do with the mixture? (a) put it in your mouth (b) pour it down the sink (c) keep it for a month (d) throw it at a wall
30. 30.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we change it (b) we measure it (c) we keep it the same
31. 31.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is kept the same? (a) spoons of baking soda (b) the same bottle (c) size of the balloon
32. 32.🟡 Which of these keeps turmeric yellow? (a) sugar water (b) detergent water (c) baking soda water (d) soap solution
33. 33.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the amount of salt”? (a) we measure it (b) we keep it the same (c) we change it
34. 34.📘 Vinegar is an acid and baking soda is a base. What happens when they meet? (a) they float apart (b) they freeze (c) they become magnets (d) they react
35. 35.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) yes, all of it (b) it turns to sugar (c) no, salt passes through (d) it turns to sand
36. 36.🪴 Which part of a plant does this job: hold up the leaves? (a) leaves (b) stem (c) roots (d) flower
37. 37.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is kept the same? (a) the water temperature (b) the amount of water (c) size of the balloon
38. 38.⚖️ Fair test — do seeds need water to sprout? What do we do with “wet or dry cotton”? (a) we change it (b) we measure it (c) we keep it the same
39. 39.🧺 Do we need a seed for the fizzy balloon? (a) not needed (b) needed
40. 40.🍋 Secret message: who does this step — letting the paper dry? (a) an adult does it (b) a child can do it

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