Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 523 · 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.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) next to the baby (c) safe from small children (d) in a busy doorway
2. 2.🧺 Do we need a funnel or spoon for the fizzy balloon? (a) not needed (b) needed
3. 3.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) turmeric powder (c) water (d) a balloon
4. 4.🍞 Which of these is something yeast needs? (a) a magnet (b) salt (c) time (d) vinegar
5. 5.🧺 Which of these is not needed for the fizzy balloon? (a) a mirror (b) an empty bottle (c) a tray for spills (d) baking soda
6. 6.🔍 Which is the odd one out? (a) chalk powder (b) table salt (c) glucose powder (d) sugar
7. 7.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a magnet (b) a clear plastic bag (c) sunlight (d) a rubber band
8. 8.🟡 Why does soap solution change turmeric’s colour? (a) soap is hot (b) soap is magnetic (c) soap is an acid (d) soap water is a base
9. 9.True or false: a dropper or spoon is not needed for the turmeric test. (a) False (b) True
10. 10.🛟 Why must a plastic bag never go over anyone’s head? (a) it can block breathing (b) it gets wet (c) it changes colour (d) it is too big
11. 11.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a battery cell (b) dry yeast (c) a balloon (d) a small bottle
12. 12.🫗 How do we separate tea leaves from tea? (a) filtering (b) evaporating (c) handpicking (d) sieving
13. 13.True or false: a mirror is not needed for the fizzy balloon. (a) False (b) True
14. 14.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
15. 15.🧺 Which of these is needed for the secret lemon message? (a) a magnet (b) a mirror (c) a cotton bud (d) a battery cell
16. 16.🛟 What should you do after handling muddy water? (a) lick your fingers (b) wash hands afterwards (c) nothing is needed (d) wipe hands on face
17. 17.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: size of the balloon is what we measure. (a) False (b) True
18. 18.🍋 Which of these steps is a job a child can do? (a) cutting the lemon (b) ironing the paper (c) plugging in the iron (d) letting the paper dry
19. 19.🔍 Which is the odd one out? (a) salt (b) sugar (c) vinegar (d) sunlight
20. 20.🫧 Is baking soda water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
21. 21.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) clearer (b) muddier (c) hot (d) salty
22. 22.🍋 Secret message: who does this step — putting the iron away? (a) a child can do it (b) an adult does it
23. 23.🛟 Why is a plastic jar a good choice for shaking? (a) it is magnetic (b) it is heavier (c) it is hotter (d) it will not break
24. 24.🔮 Predict: the adult irons for only one second. What happens? (a) the paper floats (b) it gets darker (c) writing stays faint (d) writing turns green
25. 25.🎈 What blows up the balloon in the yeast experiment? (a) smoke (b) carbon dioxide gas (c) steam (d) air from outside
26. 26.⚖️ 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 change it (b) we measure it (c) we keep it the same
27. 27.🫗 How do we separate salt from sea water? (a) winnowing (b) evaporating (c) filtering (d) sieving
28. 28.True or false: chaff from wheat grain is done by winnowing. (a) True (b) False
29. 29.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
30. 30.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a spoon (c) yeast (d) salt
31. 31.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) melting ice (c) browning lemon ink (d) dissolving salt
32. 32.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) reddish-brown (c) it stays white (d) green
33. 33.⚖️ Fair test — do seeds need water to sprout? What do we do with “the kind of seeds”? (a) we keep it the same (b) we change it (c) we measure it
34. 34.🧺 Which of these is not needed for the secret lemon message? (a) white paper (b) a cotton bud (c) lemon juice (d) a magnet
35. 35.🛟 Why must children keep their fingers away from the iron? (a) it can burn skin (b) it is sticky (c) it is magnetic (d) it is cold
36. 36.🍋 Which of these steps is a job for an adult? (a) letting the paper dry (b) dipping the cotton bud (c) cutting the lemon (d) writing the message
37. 37.🌱 What comes out of a moong seed first when it sprouts? (a) a thorn (b) a fruit (c) a tiny root (d) a flower
38. 38.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the same bottle is the one thing we change. (a) False (b) True
39. 39.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) your best clothes (c) an old shirt or apron (d) a white party dress
40. 40.🫧 What do you see when baking soda meets vinegar? (a) it glows in the dark (b) lots of fizzy bubbles (c) it turns to ice (d) nothing at all

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