Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 953 · 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.🧺 Do we need a seed for the fizzy balloon? (a) not needed (b) needed
2. 2.🔮 Predict: the jar is filled right to the top with cream. What happens? (a) it makes salt (b) it takes much longer (c) it is much faster (d) it turns pink
3. 3.🔍 Which is the odd one out? (a) air (b) water (c) warmth (d) sunlight
4. 4.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “spoons of baking soda”? (a) we change it (b) we keep it the same (c) we measure it
5. 5.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) sugar (b) warm water (c) a magnet (d) a small bottle
6. 6.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
7. 7.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
8. 8.🍞 Does yeast need time to make gas? (a) yeast needs it (b) yeast does not need it
9. 9.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a few days (b) a small bowl (c) moong seeds (d) a battery cell
10. 10.🍞 Which of these is something yeast does not need? (a) a magnet (b) sugar (c) warm water (d) time
11. 11.🫗 How do we separate chaff from wheat grain? (a) handpicking (b) filtering (c) evaporating (d) winnowing
12. 12.🧺 Which of these is not needed for the secret lemon message? (a) an adult with an iron (b) a cotton bud (c) a magnet (d) a small bowl
13. 13.🪴 Through which part does a plant take in water from the soil? (a) the flowers (b) the roots (c) the leaves (d) the fruits
14. 14.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) smaller crystals (b) liquid crystals (c) no crystals (d) bigger crystals
15. 15.🧈 Can this change be undone: melting butter? (a) can be undone (b) cannot be undone
16. 16.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns blue (c) it turns green (d) reddish-brown
17. 17.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) an empty bottle (b) a funnel or spoon (c) a tray for spills (d) a comb
18. 18.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “size of the balloon”? (a) we measure it (b) we change it (c) we keep it the same
19. 19.True or false: turmeric powder is needed for growing salt crystals. (a) False (b) True
20. 20.📘 What do we call something that changes colour to show an acid or a base? (a) a pulley (b) an indicator (c) a magnet (d) a prism
21. 21.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it flowers more (b) it wilts and droops (c) it grows faster (d) it turns blue
22. 22.🫗 Is filtered pond water safe to drink? (a) yes, if it is cold (b) yes, if it is clear (c) no, germs may stay (d) yes, always
23. 23.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “sunny or shady place”? (a) we measure it (b) we keep it the same (c) we change it
24. 24.True or false: food colour dissolves in water. (a) False (b) True
25. 25.🧺 Do we need a balloon for the fizzy balloon? (a) needed (b) not needed
26. 26.🧺 Do we need a few hours for the leafy bag test? (a) not needed (b) needed
27. 27.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) days to see crystals (b) the amount of water (c) sunny or shady place
28. 28.🧈 Can this change be undone: folding paper? (a) cannot be undone (b) can be undone
29. 29.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) yeast (b) lemon juice (c) white paper (d) a cotton bud
30. 30.🛟 Some seeds from shops are coated with chemicals. What is the safe rule? (a) throw them at friends (b) eat a few to check (c) never put seeds in mouth (d) feed them to pets
31. 31.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the filter material (b) how clear the water is (c) the same muddy water (d) the same funnel
32. 32.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the same bottle is kept the same. (a) False (b) True
33. 33.True or false: muddy water is needed for the muddy water filter. (a) False (b) True
34. 34.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) how clear the water is (b) the same glass (c) the filter material
35. 35.🧺 Which of these is needed for the secret lemon message? (a) yeast (b) a magnet (c) white paper (d) turmeric powder
36. 36.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the same bottles is what we measure. (a) True (b) False
37. 37.🫧 Which of these is neutral? (a) baking soda water (b) tamarind water (c) lemon juice (d) salt water
38. 38.🧺 Which of these is needed for the yeast balloon? (a) a magnet (b) sugar (c) a battery cell (d) a mirror
39. 39.🌱 Is soil needed for a seed to sprout? (a) not needed to sprout (b) needed to sprout
40. 40.🧺 Do we need a magnet for making butter? (a) needed (b) not needed

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