Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 836 · 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.🧺 Do we need baking soda for the fizzy balloon? (a) needed (b) not needed
2. 2.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the amount of vinegar is the one thing we change. (a) False (b) True
3. 3.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a battery cell (c) white paper strips (d) lemon juice
4. 4.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the amount of sugar”? (a) we change it (b) we measure it (c) we keep it the same
5. 5.True or false: reading the message is a job for an adult. (a) True (b) False
6. 6.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is the one thing we change. (a) False (b) True
7. 7.🛟 Why is a plastic jar a good choice for shaking? (a) it will not break (b) it is heavier (c) it is hotter (d) it is magnetic
8. 8.🍞 Does yeast need a magnet to make gas? (a) yeast needs it (b) yeast does not need it
9. 9.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
10. 10.🧺 Which of these is needed for sprouting seeds? (a) a magnet (b) a mirror (c) a few days (d) yeast
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) False (b) True
12. 12.🔮 Predict: you stop shaking after only one minute. What do you have? (a) still runny cream (b) butter lumps (c) cheese (d) ghee
13. 13.🪴 Which of these is a job of the stem? (a) hold up the leaves (b) take in water from soil (c) give out water vapour (d) make food in sunlight
14. 14.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) how clear the water is (b) the filter material (c) the amount poured
15. 15.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is kept the same? (a) the kind of juice (b) how dark the writing is (c) the iron setting
16. 16.True or false: turmeric powder is needed for sprouting seeds. (a) True (b) False
17. 17.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
18. 18.🔮 Can the brown writing go back to being invisible? (a) yes, if shaken (b) yes, in the dark (c) yes, if cooled (d) no, it stays brown
19. 19.🛟 The water for the yeast should be ___. (a) very salty (b) ice cold (c) warm, not hot (d) boiling hot
20. 20.True or false: sugar is needed for the yeast balloon. (a) True (b) False
21. 21.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is the one thing we change. (a) False (b) True
22. 22.🔍 Which is the odd one out? (a) sand (b) cooking oil (c) chalk powder (d) glucose powder
23. 23.🧺 Which of these is needed for the turmeric test? (a) a comb (b) turmeric powder (c) a mirror (d) a battery cell
24. 24.True or false: a comb is not needed for the turmeric test. (a) False (b) True
25. 25.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) an acid (c) a base
26. 26.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) an empty bottle (b) baking soda (c) sugar (d) a tray for spills
27. 27.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns black (b) it turns blue (c) it turns red (d) it stays yellow
28. 28.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) white paper strips (c) water (d) a battery cell
29. 29.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
30. 30.🛟 Why should you never drink water just because it looks clear? (a) germs are invisible (b) clear water is salty (c) clear water is hot (d) clear water is sweet
31. 31.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) size of the balloon (b) the amount of vinegar (c) the kind of balloon (d) spoons of baking soda
32. 32.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) rusting iron (c) freezing water (d) melting butter
33. 33.🍋 Which of these steps is a job a child can do? (a) cutting the lemon (b) putting the iron away (c) letting the paper dry (d) plugging in the iron
34. 34.🍞 Which of these is something yeast does not need? (a) sugar (b) time (c) a magnet (d) warm water
35. 35.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is kept the same? (a) amount of water drops (b) sun or shade (c) the kind of plant
36. 36.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) a dropper or spoon (c) a magnet (d) turmeric powder
37. 37.🍋 Secret message: who does this step — ironing the paper? (a) a child can do it (b) an adult does it
38. 38.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is what we measure. (a) True (b) False
39. 39.🛟 How should the plastic bag be tied around the branch? (a) with a hot glue gun (b) with sharp wire (c) as tight as possible (d) gently, not too tight
40. 40.📘 What do we call a seed starting to grow? (a) condensation (b) pollination (c) evaporation (d) germination

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