Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 213 · 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.🍋 Secret message: who does this step — cutting the lemon? (a) an adult does it (b) a child can do it
2. 2.🧈 Can this change be undone: dissolving salt? (a) can be undone (b) cannot be undone
3. 3.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) reddish-brown (c) it turns green (d) it turns blue
4. 4.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is what we measure. (a) False (b) True
5. 5.🧺 Which of these is needed for the yeast balloon? (a) a mirror (b) a comb (c) turmeric powder (d) sugar
6. 6.⚖️ Fair test — do seeds need water to sprout? Which of these is the one thing we change? (a) wet or dry cotton (b) the same place (c) the kind of seeds (d) how many seeds sprout
7. 7.🔍 Which is the odd one out? (a) sand (b) food colour (c) sugar (d) baking soda
8. 8.🧺 Which of these is not needed for the fizzy balloon? (a) a funnel or spoon (b) vinegar (c) a balloon (d) a mirror
9. 9.🧺 Do we need a magnet for the fizzy balloon? (a) needed (b) not needed
10. 10.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) a dropper or spoon (c) a mirror (d) lemon juice
11. 11.True or false: a funnel is not needed for the muddy water filter. (a) True (b) False
12. 12.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the same bottle”? (a) we change it (b) we measure it (c) we keep it the same
13. 13.True or false: baking soda dissolves in water. (a) True (b) False
14. 14.True or false: yeast is needed for the turmeric test. (a) True (b) False
15. 15.🔮 Predict: you use plain water instead of vinegar. What happens? (a) very little fizzing (b) it turns to honey (c) a huge eruption (d) the balloon bursts
16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we keep it the same (c) we change it
17. 17.True or false: sugar water turns turmeric reddish-brown. (a) True (b) False
18. 18.⚖️ 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 measure it (b) we keep it the same (c) we change it
19. 19.🫧 Is detergent water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
20. 20.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is what we measure? (a) the amount of water (b) the amount of yeast (c) size of the balloon (d) the water temperature
21. 21.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) mix bathroom cleaners (c) sip each liquid (d) sniff each bottle hard
22. 22.True or false: a magnet is something yeast does not need. (a) False (b) True
23. 23.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is what we measure. (a) False (b) True
24. 24.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: size of the balloon is what we measure. (a) True (b) False
25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) True (b) False
26. 26.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
27. 27.🧺 Which of these is not needed for the fizzy balloon? (a) a tray for spills (b) a comb (c) baking soda (d) vinegar
28. 28.🛟 Why is a plastic jar a good choice for shaking? (a) it will not break (b) it is heavier (c) it is magnetic (d) it is hotter
29. 29.True or false: baking soda does not dissolve in water. (a) True (b) False
30. 30.True or false: a clear plastic bag is needed for the leafy bag test. (a) False (b) True
31. 31.🍋 Secret message: who does this step — reading the message? (a) a child can do it (b) an adult does it
32. 32.📘 Is the fizzing a sign that a new substance is made? (a) it is only dissolving (b) no, nothing changes (c) yes, a new gas forms (d) it is only melting
33. 33.🧈 Can this change be undone: freezing water? (a) cannot be undone (b) can be undone
34. 34.⚖️ Fair test — do seeds need water to sprout? True or false: wet or dry cotton is the one thing we change. (a) False (b) True
35. 35.⚖️ 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) spoons of baking soda (c) the amount of vinegar (d) the same bottle
36. 36.True or false: tamarind water is neutral. (a) False (b) True
37. 37.True or false: sunlight is needed for the leafy bag test. (a) True (b) False
38. 38.⚖️ 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) size of the balloon (c) the amount of yeast
39. 39.🌱 Which of these is not needed for a seed to sprout? (a) warmth (b) water (c) sugar (d) air
40. 40.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is the one thing we change? (a) the amount of water (b) the kind of salt (c) the same dish (d) sunny or shady place

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