Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 361 · 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: the adult irons for only one second. What happens? (a) writing stays faint (b) the paper floats (c) writing turns green (d) it gets darker
2. 2.True or false: sugar from sugar water is done by evaporating. (a) True (b) False
3. 3.🛟 The water for the yeast should be ___. (a) warm, not hot (b) very salty (c) ice cold (d) boiling hot
4. 4.🧈 Can this change be undone: melting butter? (a) can be undone (b) cannot be undone
5. 5.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
6. 6.🛟 Why is a plastic jar a good choice for shaking? (a) it will not break (b) it is magnetic (c) it is hotter (d) it is heavier
7. 7.True or false: a funnel or spoon is not needed for the fizzy balloon. (a) False (b) True
8. 8.🍞 Which of these is something yeast needs? (a) time (b) a magnet (c) sunlight (d) salt
9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) False (b) True
10. 10.🔮 Predict: you shake skimmed milk (with almost no cream) instead. What happens? (a) more butter forms (b) it turns to cheese (c) no butter forms (d) it turns blue
11. 11.🫗 Which of these is done by filtering? (a) bran from wheat flour (b) bad grains from rice (c) tea leaves from tea (d) husk from rice grain
12. 12.🔍 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
13. 13.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) yeast (c) cotton or cloth (d) muddy water
14. 14.True or false: a balloon is needed for the muddy water filter. (a) False (b) True
15. 15.True or false: white paper is needed for the secret lemon message. (a) True (b) False
16. 16.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
17. 17.🔍 Which is the odd one out? (a) putting the iron away (b) cutting the lemon (c) ironing the paper (d) writing the message
18. 18.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it stays yellow (c) it turns blue (d) it turns red
19. 19.🧺 Which of these is not needed for sprouting seeds? (a) cotton wool (b) yeast (c) water (d) moong seeds
20. 20.🧺 Which of these is not needed for the yeast balloon? (a) a comb (b) sugar (c) a small bottle (d) warm water
21. 21.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is kept the same. (a) False (b) True
22. 22.🧺 Do we need an adult with an iron for the secret lemon message? (a) needed (b) not needed
23. 23.True or false: a dropper or spoon is not needed for the turmeric test. (a) False (b) True
24. 24.🧺 Do we need a mirror for the fizzy balloon? (a) not needed (b) needed
25. 25.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) how clear the water is (b) the same glass (c) the same muddy water (d) the same funnel
26. 26.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a balloon (b) dry yeast (c) sugar (d) a mirror
27. 27.🍋 Which of these steps is a job for an adult? (a) writing the message (b) letting the paper dry (c) dipping the cotton bud (d) plugging in the iron
28. 28.🪴 Which part of a plant does this job: take in water from soil? (a) roots (b) stem (c) leaves (d) flower
29. 29.🌱 Which of these sprouts in a few days? (a) seeds in the freezer (b) seeds on dry cotton (c) boiled seeds (d) wet seeds in the dark
30. 30.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the same funnel (b) how clear the water is (c) the filter material
31. 31.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a rubber band (b) a clear plastic bag (c) a mirror (d) a few hours
32. 32.🌱 Which of these sprouts in a few days? (a) seeds on dry cotton (b) seeds in the freezer (c) boiled seeds (d) wet seeds by a window
33. 33.True or false: sunlight is needed for the leafy bag test. (a) True (b) False
34. 34.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is kept the same? (a) amount of water drops (b) sun or shade (c) the kind of plant
35. 35.🧺 Which of these is needed for the secret lemon message? (a) a mirror (b) a magnet (c) turmeric powder (d) a small bowl
36. 36.🌱 Which of these is needed for a seed to sprout? (a) soil (b) sugar (c) salt (d) warmth
37. 37.True or false: small stones from dal is done by filtering. (a) False (b) True
38. 38.🪴 Which of these is a job of the flower? (a) carry water upward (b) make seeds (c) take in water from soil (d) make food in sunlight
39. 39.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) salt water (c) baking soda water (d) plain water
40. 40.🔮 Predict: you wait 2 hours instead of 10 minutes. What happens? (a) it shrinks to nothing (b) it turns to bread (c) the balloon is bigger (d) the balloon is smaller

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