Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 833 · 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.True or false: sand dissolves in water. (a) True (b) False
2. 2.True or false: freezing water is a change that can be undone. (a) True (b) False
3. 3.🌱 Seeds need water, air and ___ to sprout. (a) salt (b) sugar (c) soil (d) warmth
4. 4.True or false: air is needed for a seed to sprout. (a) False (b) True
5. 5.True or false: a funnel or spoon is not needed for the fizzy balloon. (a) True (b) False
6. 6.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) warm water (c) yeast (d) a shallow dish
7. 7.True or false: a mirror is not needed for the muddy water filter. (a) False (b) True
8. 8.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: sun or shade is the one thing we change. (a) True (b) False
9. 9.🔮 Predict: you shake skimmed milk (with almost no cream) instead. What happens? (a) no butter forms (b) it turns blue (c) more butter forms (d) it turns to cheese
10. 10.🎈 What blows up the balloon in the yeast experiment? (a) steam (b) carbon dioxide gas (c) air from outside (d) smoke
11. 11.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: spoons of baking soda is the one thing we change. (a) False (b) True
12. 12.True or false: a funnel is not needed for the muddy water filter. (a) False (b) True
13. 13.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a comb (c) a dropper or spoon (d) water
14. 14.🧺 Which of these is needed for the yeast balloon? (a) a comb (b) a balloon (c) turmeric powder (d) a mirror
15. 15.⚖️ Fair test — do seeds need water to sprout? What do we do with “wet or dry cotton”? (a) we measure it (b) we change it (c) we keep it the same
16. 16.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a jar with a tight lid (b) a timer (c) cold water to rinse (d) a battery cell
17. 17.True or false: make seeds is a job of the flower. (a) True (b) False
18. 18.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) sunlight (b) a clear plastic bag (c) a mirror (d) a potted plant
19. 19.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) it turns blue (c) reddish-brown (d) it stays yellow
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) size of the balloon (b) the amount of yeast (c) the water temperature (d) the amount of sugar
21. 21.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the same bottles”? (a) we measure it (b) we change it (c) we keep it the same
22. 22.🎈 Why does the balloon blow up? (a) gas is made inside (b) vinegar is hot (c) outside air gets in (d) the bottle shrinks
23. 23.True or false: sunlight is something yeast needs. (a) True (b) False
24. 24.🔍 Which is the odd one out? (a) salt (b) soil (c) air (d) sugar
25. 25.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
26. 26.True or false: water is not needed for sprouting seeds. (a) False (b) True
27. 27.🧺 Do we need turmeric powder for the secret lemon message? (a) not needed (b) needed
28. 28.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a mirror (b) cotton or cloth (c) a funnel (d) a clean glass
29. 29.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is the one thing we change? (a) the water temperature (b) the amount of water (c) the amount of yeast (d) the same bottles
30. 30.True or false: make food in sunlight is a job of the leaves. (a) True (b) False
31. 31.🧺 Which of these is not needed for the fizzy balloon? (a) a funnel or spoon (b) an empty bottle (c) vinegar (d) a comb
32. 32.🔮 Predict: sprouts grow in the dark for a week. What colour are their leaves? (a) blue (b) dark green (c) pale yellow (d) bright red
33. 33.🔮 Predict (do not try it): yeast is put in boiling water. What happens? (a) it turns to sugar (b) it grows faster (c) it glows (d) the yeast is killed
34. 34.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a few days (b) cotton wool (c) turmeric powder (d) moong seeds
35. 35.🔮 Predict: you tie a bag on a branch with no leaves. Will it collect much water? (a) much less water (b) it fills with soil (c) much more water (d) exactly the same
36. 36.True or false: boiled seeds sprouts in a few days. (a) True (b) False
37. 37.🧈 What is the watery liquid left after the butter forms? (a) buttermilk (b) vinegar (c) oil (d) honey
38. 38.🫧 Which of these is an acid? (a) detergent water (b) tamarind water (c) baking soda water (d) salt water
39. 39.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: the amount of cream is kept the same. (a) False (b) True
40. 40.🫗 How do we separate salt from sea water? (a) handpicking (b) filtering (c) evaporating (d) sieving

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