Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 579 · 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 does not sprout? (a) seeds in the freezer (b) wet seeds by a window (c) seeds on wet cotton (d) wet seeds in the dark
2. 2.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is what we measure. (a) False (b) True
3. 3.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
4. 4.True or false: a shallow dish is not needed for growing salt crystals. (a) True (b) False
5. 5.🧺 Which of these is needed for the fizzy balloon? (a) a comb (b) a battery cell (c) a seed (d) baking soda
6. 6.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) lemon juice (c) yeast (d) white paper strips
7. 7.True or false: turmeric powder is needed for the leafy bag test. (a) False (b) True
8. 8.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the amount of yeast”? (a) we measure it (b) we keep it the same (c) we change it
9. 9.🔮 Predict: you use more vinegar and more baking soda. What happens to the balloon? (a) there is no change (b) it grows bigger (c) it turns blue (d) it shrinks
10. 10.🔮 Predict: you stop shaking after only one minute. What do you have? (a) ghee (b) still runny cream (c) cheese (d) butter lumps
11. 11.🍋 Secret message: who does this step — dipping the cotton bud? (a) a child can do it (b) an adult does it
12. 12.🪴 Which part of a plant does this job: hold the plant in soil? (a) leaves (b) roots (c) stem (d) flower
13. 13.🫧 Which of these is a base? (a) vinegar (b) detergent water (c) sugar water (d) lemon juice
14. 14.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) warm water (b) a small bottle (c) dry yeast (d) turmeric powder
15. 15.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) mix bathroom cleaners (c) sniff each bottle hard (d) use only kitchen items
16. 16.🫗 How do we separate sugar from sugar water? (a) handpicking (b) evaporating (c) filtering (d) winnowing
17. 17.🌱 Which of these is not needed for a seed to sprout? (a) warmth (b) sugar (c) air (d) water
18. 18.🧺 Which of these is needed for the secret lemon message? (a) an adult with an iron (b) a balloon (c) a mirror (d) a battery cell
19. 19.True or false: rusting iron is a change that can be undone. (a) True (b) False
20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) False (b) True
21. 21.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) soap solution (d) vinegar
22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we keep it the same (c) we measure it
23. 23.True or false: freezing water is a change that can be undone. (a) False (b) True
24. 24.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the iron setting”? (a) we measure it (b) we change it (c) we keep it the same
25. 25.🧺 Do we need white paper for the secret lemon message? (a) needed (b) not needed
26. 26.⚖️ Fair test — do seeds need water to sprout? What do we do with “how many seeds sprout”? (a) we keep it the same (b) we change it (c) we measure it
27. 27.True or false: vinegar is neutral. (a) True (b) False
28. 28.True or false: soil is not needed for a seed to sprout. (a) False (b) True
29. 29.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a balloon (b) a funnel or spoon (c) sugar (d) baking soda
30. 30.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is kept the same. (a) True (b) False
31. 31.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it turns blue (b) it grows faster (c) it wilts and droops (d) it flowers more
32. 32.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “sunny or shady place”? (a) we measure it (b) we change it (c) we keep it the same
33. 33.True or false: a balloon is not needed for the yeast balloon. (a) False (b) True
34. 34.🧺 Do we need a battery cell for growing salt crystals? (a) needed (b) not needed
35. 35.🧂 Does chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water
36. 36.⚖️ 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 amount of salt (c) sunny or shady place (d) days to see crystals
37. 37.True or false: a mirror is not needed for the secret lemon message. (a) False (b) True
38. 38.🍋 Secret message: who does this step — reading the message? (a) a child can do it (b) an adult does it
39. 39.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) yeast (b) a spoon (c) warm water (d) salt
40. 40.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “spoons of baking soda”? (a) we change it (b) we measure it (c) we keep it the same

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