Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 768 · 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.🧈 Why does shaking cream make butter? (a) the lid is warm (b) shaking adds salt (c) fat bits stick together (d) the jar adds butter
2. 2.🫧 Is salt water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
3. 3.📘 Vinegar is an acid and baking soda is a base. What happens when they meet? (a) they react (b) they freeze (c) they float apart (d) they become magnets
4. 4.🧺 Do we need a spoon for growing salt crystals? (a) not needed (b) needed
5. 5.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) sand and pebbles (c) turmeric powder (d) a magnet
6. 6.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the kind of plant”? (a) we keep it the same (b) we change it (c) we measure it
7. 7.True or false: vinegar keeps turmeric yellow. (a) True (b) False
8. 8.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is what we measure. (a) False (b) True
9. 9.🧂 Why do crystals appear as the dish dries? (a) salt grows roots (b) the dish melts (c) water evaporates (d) salt eats water
10. 10.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is the one thing we change? (a) the kind of plant (b) sun or shade (c) the size of the plant (d) the same kind of bag
11. 11.🫗 How do we separate sugar from sugar water? (a) filtering (b) evaporating (c) sieving (d) handpicking
12. 12.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the amount poured (b) the filter material (c) how clear the water is
13. 13.True or false: putting the iron away is a job for an adult. (a) False (b) True
14. 14.🫧 Is tamarind water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
15. 15.⚖️ 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
16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we change it (c) we keep it the same
17. 17.🧂 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
18. 18.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of sugar is kept the same. (a) True (b) False
19. 19.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) an adult with an iron (b) lemon juice (c) a cotton bud (d) yeast
20. 20.🫗 Which of these is done by evaporating? (a) salt from sea water (b) tea leaves from tea (c) gravel from fine sand (d) husk from rice grain
21. 21.🧺 Which of these is needed for sprouting seeds? (a) a mirror (b) turmeric powder (c) a balloon (d) a small bowl
22. 22.🧂 Which of these dissolves in water? (a) cooking oil (b) sand (c) food colour (d) sawdust
23. 23.🍋 Secret message: who does this step — dipping the cotton bud? (a) an adult does it (b) a child can do it
24. 24.🫧 Which of these is neutral? (a) lemon juice (b) orange juice (c) plain water (d) detergent water
25. 25.🫧 Which of these is an acid? (a) detergent water (b) lemon juice (c) plain water (d) soap solution
26. 26.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) white paper (b) a small bowl (c) an adult with an iron (d) a mirror
27. 27.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) water (c) turmeric powder (d) a mirror
28. 28.True or false: a magnet is something yeast needs. (a) True (b) False
29. 29.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a battery cell (b) baking soda (c) an empty bottle (d) a funnel or spoon
30. 30.⚖️ Fair test — do seeds need water to sprout? What do we do with “the same bowls”? (a) we change it (b) we measure it (c) we keep it the same
31. 31.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) clearer (c) muddier (d) salty
32. 32.🧺 Do we need a magnet for the muddy water filter? (a) not needed (b) needed
33. 33.True or false: detergent water keeps turmeric yellow. (a) True (b) False
34. 34.📘 The browning of lemon juice with heat is a ___ change. (a) physical (b) musical (c) magnetic (d) chemical
35. 35.🛟 Lemon juice stings cuts and eyes. What should you do after the experiment? (a) skip washing (b) rub your eyes (c) wash your hands (d) lick your fingers
36. 36.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) yes, all of it (b) it turns to sand (c) it turns to sugar (d) no, salt passes through
37. 37.🪴 Which of these is a job of the flower? (a) make seeds (b) carry water upward (c) take in water from soil (d) hold up the leaves
38. 38.🍋 What colour does the lemon writing turn when an adult warms it? (a) blue (b) green (c) white (d) brown
39. 39.🌱 Which of these is needed for a seed to sprout? (a) soil (b) sugar (c) salt (d) warmth
40. 40.🧺 Which of these is not needed for the fizzy balloon? (a) a balloon (b) baking soda (c) a funnel or spoon (d) a comb

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