Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 875 · 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 — does yeast blow up the balloon more with warm water or cold water? Which of these is the one thing we change? (a) the amount of sugar (b) size of the balloon (c) the water temperature (d) the amount of water
2. 2.📘 What do we call a solution that cannot dissolve any more salt? (a) saturated (b) frozen (c) empty (d) magnetic
3. 3.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the kind of plant is the one thing we change. (a) True (b) False
4. 4.🔮 Predict: you shake skimmed milk (with almost no cream) instead. What happens? (a) no butter forms (b) more butter forms (c) it turns blue (d) it turns to cheese
5. 5.🫧 Which of these is an acid? (a) tamarind water (b) baking soda water (c) detergent water (d) salt water
6. 6.🪴 Which part of a plant does this job: take in water from soil? (a) leaves (b) flower (c) roots (d) stem
7. 7.🔍 Which is the odd one out? (a) ironing the paper (b) cutting the lemon (c) putting the iron away (d) letting the paper dry
8. 8.True or false: water is not needed for the turmeric test. (a) True (b) False
9. 9.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a magnet (b) a timer (c) a bowl (d) cold water to rinse
10. 10.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
11. 11.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) white paper (b) an adult with an iron (c) a cotton bud (d) a battery cell
12. 12.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns red (c) it stays yellow (d) it turns blue
13. 13.🫧 Which of these is neutral? (a) orange juice (b) sugar water (c) detergent water (d) tamarind water
14. 14.🔍 Which is the odd one out? (a) melting butter (b) baking a cake (c) freezing water (d) folding paper
15. 15.True or false: a paper clip is needed for the yeast balloon. (a) True (b) False
16. 16.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of water is kept the same. (a) True (b) False
17. 17.🧺 Do we need a comb for the yeast balloon? (a) not needed (b) needed
18. 18.🍞 Does yeast need salt to make gas? (a) yeast needs it (b) yeast does not need it
19. 19.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) turmeric powder (c) lemon juice (d) a balloon
20. 20.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) use only kitchen items (c) sip each liquid (d) mix bathroom cleaners
21. 21.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we keep it the same (b) we change it (c) we measure it
22. 22.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) spoons of baking soda (b) size of the balloon (c) the amount of vinegar (d) the same bottle
23. 23.🌱 Is warmth needed for a seed to sprout? (a) not needed to sprout (b) needed to sprout
24. 24.True or false: a balloon is needed for sprouting seeds. (a) False (b) True
25. 25.🫗 Which of these is done by filtering? (a) bad grains from rice (b) gravel from fine sand (c) tea leaves from tea (d) bran from wheat flour
26. 26.🛟 The water for the yeast should be ___. (a) ice cold (b) very salty (c) warm, not hot (d) boiling hot
27. 27.True or false: small stones from dal is done by handpicking. (a) True (b) False
28. 28.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is what we measure. (a) False (b) True
29. 29.🔍 Which is the odd one out? (a) soil (b) water (c) warmth (d) air
30. 30.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the kind of juice is the one thing we change. (a) False (b) True
31. 31.🍞 Which of these is something yeast needs? (a) sunlight (b) a magnet (c) warm water (d) vinegar
32. 32.🧺 Which of these is not needed for the fizzy balloon? (a) a funnel or spoon (b) baking soda (c) a seed (d) a balloon
33. 33.🍞 Does yeast need sugar to make gas? (a) yeast needs it (b) yeast does not need it
34. 34.True or false: vinegar is something yeast does not need. (a) True (b) False
35. 35.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
36. 36.🧺 Do we need a magnet for making butter? (a) not needed (b) needed
37. 37.🧺 Which of these is not needed for the yeast balloon? (a) a balloon (b) a small bottle (c) sugar (d) a magnet
38. 38.🧂 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
39. 39.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a clear plastic bag (b) turmeric powder (c) a few hours (d) sunlight
40. 40.🫧 Which of these is an acid? (a) baking soda water (b) soap solution (c) vinegar (d) salt water

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