Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 411 · 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.🔮 Predict: which gives more drops in the bag — a hot sunny day or a cool cloudy day? (a) neither of them (b) the hot sunny day (c) the cool cloudy day (d) both the same
2. 2.🧺 Do we need a potted plant for the leafy bag test? (a) not needed (b) needed
3. 3.🧺 Which of these is not needed for making butter? (a) cold water to rinse (b) a magnet (c) a jar with a tight lid (d) a bowl
4. 4.🔍 Which is the odd one out? (a) cutting the lemon (b) putting the iron away (c) reading the message (d) ironing the paper
5. 5.🧺 Do we need yeast for the muddy water filter? (a) not needed (b) needed
6. 6.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it turns blue (b) it wilts and droops (c) it flowers more (d) it grows faster
7. 7.🧂 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
8. 8.🧺 Do we need sugar for the yeast balloon? (a) needed (b) not needed
9. 9.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
10. 10.True or false: a mirror is not needed for sprouting seeds. (a) False (b) True
11. 11.True or false: lemon juice is needed for the secret lemon message. (a) False (b) True
12. 12.🔮 Predict: you shake skimmed milk (with almost no cream) instead. What happens? (a) it turns blue (b) more butter forms (c) no butter forms (d) it turns to cheese
13. 13.🍞 Does yeast need warm water to make gas? (a) yeast needs it (b) yeast does not need it
14. 14.🧺 Which of these is needed for the fizzy balloon? (a) a seed (b) a funnel or spoon (c) a mirror (d) a battery cell
15. 15.🫗 How do we separate tea leaves from tea? (a) winnowing (b) filtering (c) evaporating (d) sieving
16. 16.True or false: vinegar is needed for the fizzy balloon. (a) False (b) True
17. 17.True or false: vinegar is not needed for the leafy bag test. (a) False (b) True
18. 18.🧈 Can this change be undone: rusting iron? (a) can be undone (b) cannot be undone
19. 19.🛟 The water for the yeast should be ___. (a) warm, not hot (b) very salty (c) boiling hot (d) ice cold
20. 20.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) few or no crystals (c) it turns sweet (d) crystals grow faster
21. 21.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it turns to sand (b) it floats on top (c) it sinks to the bottom (d) it dissolves
22. 22.🧺 Which of these is needed for the fizzy balloon? (a) a magnet (b) a mirror (c) vinegar (d) a comb
23. 23.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) your best clothes (c) a white party dress (d) an old shirt or apron
24. 24.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) turmeric powder (c) a piece of string (d) a spoon
25. 25.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
26. 26.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) clear water is sweet (c) clear water is hot (d) germs are invisible
27. 27.🧺 Which of these is not needed for sprouting seeds? (a) a few days (b) moong seeds (c) a balloon (d) cotton wool
28. 28.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) a balloon (c) sand and pebbles (d) a funnel
29. 29.True or false: freezing water is a change that cannot be undone. (a) False (b) True
30. 30.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
31. 31.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is what we measure. (a) True (b) False
32. 32.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) white paper strips (c) a balloon (d) a comb
33. 33.True or false: sugar is needed for a seed to sprout. (a) True (b) False
34. 34.True or false: vinegar is needed for the leafy bag test. (a) False (b) True
35. 35.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a balloon (b) salt (c) a spoon (d) warm water
36. 36.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the same cotton bud”? (a) we measure it (b) we change it (c) we keep it the same
37. 37.True or false: turmeric powder is needed for the turmeric test. (a) False (b) True
38. 38.True or false: a battery cell is not needed for the muddy water filter. (a) True (b) False
39. 39.🌱 Is air needed for a seed to sprout? (a) needed to sprout (b) not needed to sprout
40. 40.🧂 Which of these dissolves in water? (a) small pebbles (b) sand (c) chalk powder (d) baking soda

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