Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 236 · 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 is the odd one out? (a) baking soda water (b) detergent water (c) salt water (d) soap solution
2. 2.🧺 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 balloon
3. 3.True or false: a battery cell is needed for the leafy bag test. (a) False (b) True
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the turmeric paper (c) the liquid we test (d) the colour we see
5. 5.🪴 Which of these is a job of the leaves? (a) take in water from soil (b) give out water vapour (c) carry water upward (d) make seeds
6. 6.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) the same bottle (b) spoons of baking soda (c) the kind of balloon (d) size of the balloon
7. 7.True or false: yeast is not needed for the leafy bag test. (a) True (b) False
8. 8.🛟 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
9. 9.🛟 Why must the jar lid be screwed on tightly? (a) so it gets hot (b) so cream does not spill (c) so air gets out (d) so it turns yellow
10. 10.True or false: browning lemon ink is a change that cannot be undone. (a) False (b) True
11. 11.🔍 What do you see inside the plastic bag after a few hours in the sun? (a) nothing at all (b) tiny insects (c) salt crystals (d) tiny water drops
12. 12.🍞 Does yeast need a magnet to make gas? (a) yeast does not need it (b) yeast needs it
13. 13.🔍 Which is the odd one out? (a) warm water (b) sugar (c) time (d) salt
14. 14.🍋 Why can’t you see the lemon writing once it dries? (a) it turned into air (b) the ink is magnetic (c) the paper ate it (d) dry juice is see-through
15. 15.🫧 Is tamarind water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
16. 16.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is the one thing we change? (a) time to make butter (b) the cream temperature (c) the same jar (d) the amount of cream
17. 17.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a battery cell (b) cotton wool (c) water (d) a few days
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) False (b) True
19. 19.True or false: baking soda does not dissolve in water. (a) False (b) True
20. 20.True or false: a battery cell is needed for the turmeric test. (a) False (b) True
21. 21.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the same muddy water (b) the same funnel (c) the filter material (d) the same glass
22. 22.🫧 Which of these is an acid? (a) baking soda water (b) detergent water (c) vinegar (d) plain water
23. 23.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) fresh cream (b) a jar with a tight lid (c) a battery cell (d) a timer
24. 24.🧺 Which of these is not needed for the secret lemon message? (a) an adult with an iron (b) yeast (c) a cotton bud (d) lemon juice
25. 25.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is what we measure? (a) the kind of balloon (b) spoons of baking soda (c) the amount of vinegar (d) size of the balloon
26. 26.🧺 Do we need sand and pebbles for the muddy water filter? (a) needed (b) not needed
27. 27.🛟 What should you do after handling muddy water? (a) wash hands afterwards (b) nothing is needed (c) wipe hands on face (d) lick your fingers
28. 28.🛟 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
29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) True (b) False
30. 30.🌱 Why do the seeds on dry cotton not sprout? (a) they have no salt (b) they have no soil (c) they have no water (d) they are too wet
31. 31.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the amount of vinegar”? (a) we change it (b) we measure it (c) we keep it the same
32. 32.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: how dark the writing is is what we measure. (a) False (b) True
33. 33.⚖️ 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 measure it (c) we change it
34. 34.🧺 Do we need yeast for making butter? (a) not needed (b) needed
35. 35.🍋 Which of these steps is a job a child can do? (a) reading the message (b) ironing the paper (c) plugging in the iron (d) putting the iron away
36. 36.True or false: a mirror is needed for making butter. (a) False (b) True
37. 37.🌱 Which of these sprouts in a few days? (a) seeds on dry cotton (b) wet seeds by a window (c) boiled seeds (d) seeds in the freezer
38. 38.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a magnet (c) a clean glass (d) a funnel
39. 39.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a mirror (b) a rubber band (c) a clear plastic bag (d) a potted plant
40. 40.🔍 Which is the odd one out? (a) orange juice (b) lemon juice (c) plain water (d) curd

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