Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 52 · 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: a dropper or spoon is needed for the turmeric test. (a) False (b) True
2. 2.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) sugar (b) turmeric powder (c) a balloon (d) warm water
3. 3.🔮 Predict: you shake skimmed milk (with almost no cream) instead. What happens? (a) it turns to cheese (b) more butter forms (c) it turns blue (d) no butter forms
4. 4.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a jar with a tight lid (b) fresh cream (c) a timer (d) a balloon
5. 5.True or false: plugging in the iron is a job a child can do. (a) True (b) False
6. 6.🧺 Do we need a magnet for the leafy bag test? (a) not needed (b) needed
7. 7.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) muddier (c) salty (d) clearer
8. 8.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a funnel or spoon (b) a seed (c) baking soda (d) an empty bottle
9. 9.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is what we measure. (a) False (b) True
10. 10.🧺 Which of these is not needed for the yeast balloon? (a) a balloon (b) a comb (c) dry yeast (d) sugar
11. 11.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) freezing water (c) baking a cake (d) cooking an egg
12. 12.🧺 Do we need lemon juice for the secret lemon message? (a) not needed (b) needed
13. 13.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “the amount of cream”? (a) we keep it the same (b) we change it (c) we measure it
14. 14.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the amount of water”? (a) we keep it the same (b) we change it (c) we measure it
15. 15.🌱 Is salt needed for a seed to sprout? (a) needed to sprout (b) not needed to sprout
16. 16.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
17. 17.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: spoons of baking soda is kept the same. (a) True (b) False
18. 18.True or false: cutting the lemon is a job for an adult. (a) False (b) True
19. 19.🧺 Do we need dry yeast for the yeast balloon? (a) not needed (b) needed
20. 20.🍞 Does yeast need time to make gas? (a) yeast needs it (b) yeast does not need it
21. 21.🍞 Does yeast need a magnet to make gas? (a) yeast needs it (b) yeast does not need it
22. 22.🫧 Is salt water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
23. 23.🫧 Which of these is an acid? (a) detergent water (b) sugar water (c) orange juice (d) soap solution
24. 24.🛟 Lemon juice stings cuts and eyes. What should you do after the experiment? (a) wash your hands (b) skip washing (c) lick your fingers (d) rub your eyes
25. 25.True or false: sugar is something yeast needs. (a) False (b) True
26. 26.🧺 Which of these is not needed for the turmeric test? (a) water (b) turmeric powder (c) a mirror (d) a dropper or spoon
27. 27.🍋 Secret message: who does this step — writing the message? (a) an adult does it (b) a child can do it
28. 28.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the same cotton bud”? (a) we keep it the same (b) we change it (c) we measure it
29. 29.True or false: a balloon is needed for the fizzy balloon. (a) True (b) False
30. 30.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “spoons of baking soda”? (a) we measure it (b) we change it (c) we keep it the same
31. 31.🪴 Which of these is a job of the stem? (a) make food in sunlight (b) make seeds (c) give out water vapour (d) carry water upward
32. 32.🧺 Which of these is not needed for making butter? (a) a bowl (b) cold water to rinse (c) yeast (d) a timer
33. 33.🛟 Who should use the hot iron in the secret message experiment? (a) the youngest child (b) any child (c) whoever is fastest (d) only an adult
34. 34.🔍 Which is the odd one out? (a) sugar water (b) soap solution (c) baking soda water (d) detergent water
35. 35.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is kept the same? (a) spoons of baking soda (b) the kind of balloon (c) size of the balloon
36. 36.🫧 Is tamarind water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
37. 37.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the amount of sugar”? (a) we measure it (b) we change it (c) we keep it the same
38. 38.🔍 Which is the odd one out? (a) browning lemon ink (b) cooking an egg (c) rusting iron (d) dissolving salt
39. 39.True or false: detergent water is a base. (a) True (b) False
40. 40.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) a balloon (c) warm water (d) a battery cell

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