Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 384 · 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) wet seeds in the dark (b) wet seeds by a window (c) seeds on wet cotton (d) boiled seeds
2. 2.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a mirror (b) a clean glass (c) a funnel (d) cotton or cloth
3. 3.🧺 Do we need a magnet for growing salt crystals? (a) needed (b) not needed
4. 4.🫗 Which of these is done by evaporating? (a) mud from water (b) sugar from sugar water (c) chaff from wheat grain (d) gravel from fine sand
5. 5.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
6. 6.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a few hours (b) a potted plant (c) a rubber band (d) a battery cell
7. 7.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the water temperature is kept the same. (a) True (b) False
8. 8.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “time to make butter”? (a) we change it (b) we measure it (c) we keep it the same
9. 9.🧺 Which of these is not needed for the leafy bag test? (a) a few hours (b) a mirror (c) a rubber band (d) sunlight
10. 10.True or false: take in water from soil is a job of the stem. (a) True (b) False
11. 11.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a shallow dish (c) a spoon (d) a magnet
12. 12.🔍 Which is the odd one out? (a) lemon juice (b) baking soda water (c) plain water (d) salt water
13. 13.🫧 Which of these is neutral? (a) detergent water (b) soap solution (c) salt water (d) curd
14. 14.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) warm water (b) a balloon (c) a comb (d) dry yeast
15. 15.⚖️ Fair test — do seeds need water to sprout? What do we do with “the same bowls”? (a) we change it (b) we keep it the same (c) we measure it
16. 16.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is the one thing we change. (a) True (b) False
17. 17.True or false: a tray for spills is not needed for the fizzy balloon. (a) True (b) False
18. 18.🧂 Which of these dissolves in water? (a) chalk powder (b) sand (c) table salt (d) cooking oil
19. 19.🛟 What should you do after handling muddy water? (a) nothing is needed (b) wipe hands on face (c) lick your fingers (d) wash hands afterwards
20. 20.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a small bowl (b) yeast (c) moong seeds (d) a few days
21. 21.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) vinegar (b) baking soda (c) a mirror (d) a funnel or spoon
22. 22.⚖️ 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) days to see crystals (b) the amount of water (c) sunny or shady place (d) the amount of salt
23. 23.⚖️ 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 kept the same. (a) True (b) False
24. 24.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) an adult with an iron (b) a cotton bud (c) yeast (d) white paper
25. 25.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
26. 26.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) fresh cream (b) a timer (c) yeast (d) a bowl
27. 27.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the amount poured (b) the filter material (c) the same glass (d) the same muddy water
28. 28.🌱 Is air needed for a seed to sprout? (a) not needed to sprout (b) needed to sprout
29. 29.True or false: lemon juice is needed for the turmeric test. (a) False (b) True
30. 30.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
31. 31.🔮 Predict: you write with plain water instead of lemon juice. What appears after ironing? (a) a rainbow (b) blue words (c) almost nothing (d) dark brown words
32. 32.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sand (b) yes, all of it (c) it turns to sugar (d) no, salt passes through
33. 33.True or false: yeast is needed for the muddy water filter. (a) True (b) False
34. 34.🧺 Which of these is needed for the turmeric test? (a) lemon juice (b) a magnet (c) a balloon (d) a comb
35. 35.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns blue (c) it turns red (d) it stays yellow
36. 36.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the same cotton bud is what we measure. (a) False (b) True
37. 37.True or false: small stones from dal is done by evaporating. (a) False (b) True
38. 38.🛟 How should the plastic bag be tied around the branch? (a) as tight as possible (b) with sharp wire (c) gently, not too tight (d) with a hot glue gun
39. 39.🍋 Secret message: who does this step — cutting the lemon? (a) a child can do it (b) an adult does it
40. 40.🧺 Do we need a potted plant for the leafy bag test? (a) needed (b) not needed

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