Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 487 · 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 of these is not needed for the secret lemon message? (a) lemon juice (b) yeast (c) a small bowl (d) a cotton bud
2. 2.🪴 Which part of a plant does this job: hold the plant in soil? (a) leaves (b) roots (c) stem (d) flower
3. 3.🛟 What should you do after handling muddy water? (a) wash hands afterwards (b) lick your fingers (c) nothing is needed (d) wipe hands on face
4. 4.📘 What do we call something that changes colour to show an acid or a base? (a) a magnet (b) a prism (c) an indicator (d) a pulley
5. 5.True or false: a dropper or spoon is not needed for the turmeric test. (a) False (b) True
6. 6.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a magnet (b) warm water (c) a shallow dish (d) salt
7. 7.🛟 Some seeds from shops are coated with chemicals. What is the safe rule? (a) feed them to pets (b) throw them at friends (c) eat a few to check (d) never put seeds in mouth
8. 8.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a timer (b) a balloon (c) a jar with a tight lid (d) fresh cream
9. 9.True or false: a cotton bud is not needed for the secret lemon message. (a) False (b) True
10. 10.🌱 Is water needed for a seed to sprout? (a) not needed to sprout (b) needed to sprout
11. 11.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we keep it the same (b) we change it (c) we measure it
12. 12.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a funnel or spoon (b) a comb (c) vinegar (d) baking soda
13. 13.🍋 What colour does the lemon writing turn when an adult warms it? (a) green (b) white (c) blue (d) brown
14. 14.🧺 Do we need a magnet for growing salt crystals? (a) not needed (b) needed
15. 15.🍞 Does yeast need salt to make gas? (a) yeast does not need it (b) yeast needs it
16. 16.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) a piece of string (c) turmeric powder (d) a magnet
17. 17.🫧 Which of these is neutral? (a) tamarind water (b) salt water (c) soap solution (d) baking soda water
18. 18.🔮 Predict: you stop shaking after only one minute. What do you have? (a) still runny cream (b) butter lumps (c) cheese (d) ghee
19. 19.🔍 Which is the odd one out? (a) cutting the lemon (b) dipping the cotton bud (c) plugging in the iron (d) putting the iron away
20. 20.True or false: bran from wheat flour is done by sieving. (a) True (b) False
21. 21.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: time to make butter is the one thing we change. (a) False (b) True
22. 22.🔮 Predict: seeds on wet cotton are kept in a dark cupboard. Will they sprout? (a) they turn to stones (b) they melt (c) yes, they sprout (d) no, never
23. 23.🔮 Predict: you use plain water instead of vinegar. What happens? (a) very little fizzing (b) a huge eruption (c) the balloon bursts (d) it turns to honey
24. 24.True or false: a mirror is needed for the yeast balloon. (a) True (b) False
25. 25.🍋 Why does the lemon writing turn brown with heat? (a) heat adds colour (b) the iron is brown (c) paper turns lemony (d) the juice scorches first
26. 26.True or false: vinegar is something yeast needs. (a) True (b) False
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the colour we see (c) the light we look in (d) the turmeric paper
28. 28.🧺 Which of these is not needed for the turmeric test? (a) water (b) a dropper or spoon (c) a magnet (d) white paper strips
29. 29.🧺 Which of these is not needed for sprouting seeds? (a) a small bowl (b) a magnet (c) moong seeds (d) cotton wool
30. 30.🫧 Is tamarind water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
31. 31.🧺 Which of these is not needed for making butter? (a) a balloon (b) a timer (c) fresh cream (d) a jar with a tight lid
32. 32.🪴 Through which part does a plant take in water from the soil? (a) the fruits (b) the roots (c) the leaves (d) the flowers
33. 33.True or false: a spoon is not needed for growing salt crystals. (a) False (b) True
34. 34.🍞 Which of these is something yeast needs? (a) salt (b) sunlight (c) vinegar (d) sugar
35. 35.🧺 Do we need a mirror for the fizzy balloon? (a) needed (b) not needed
36. 36.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) a battery cell (b) an adult with an iron (c) a small bowl (d) white paper
37. 37.🛟 Why is a plastic jar a good choice for shaking? (a) it will not break (b) it is heavier (c) it is hotter (d) it is magnetic
38. 38.🧂 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
39. 39.True or false: a mirror is not needed for growing salt crystals. (a) True (b) False
40. 40.🧺 Which of these is not needed for the leafy bag test? (a) sunlight (b) a rubber band (c) a mirror (d) a clear plastic bag

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