Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 969 · 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: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it turns red (c) it turns black (d) it stays yellow
2. 2.🔍 Which is the odd one out? (a) dissolving salt (b) baking a cake (c) cooking an egg (d) rusting iron
3. 3.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) size of the balloon (b) the amount of vinegar (c) spoons of baking soda (d) the kind of balloon
4. 4.True or false: a shallow dish is not needed for growing salt crystals. (a) True (b) False
5. 5.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) muddier (c) clearer (d) hot
6. 6.🔍 Which is the odd one out? (a) sugar (b) time (c) a magnet (d) warm water
7. 7.True or false: soap solution is neutral. (a) True (b) False
8. 8.🧂 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
9. 9.⚖️ Fair test — do seeds need water to sprout? True or false: how many seeds sprout is the one thing we change. (a) True (b) False
10. 10.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the same bottles”? (a) we change it (b) we measure it (c) we keep it the same
11. 11.🧈 Can this change be undone: rusting iron? (a) can be undone (b) cannot be undone
12. 12.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns green (c) it turns blue (d) reddish-brown
13. 13.🧺 Which of these is not needed for the yeast balloon? (a) warm water (b) turmeric powder (c) a small bottle (d) sugar
14. 14.🫗 How do we separate bad grains from rice? (a) filtering (b) evaporating (c) handpicking (d) sieving
15. 15.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is what we measure? (a) amount of water drops (b) the kind of plant (c) the size of the plant (d) the time we wait
16. 16.True or false: a piece of string is needed for growing salt crystals. (a) True (b) False
17. 17.🔮 Predict: you use plain water instead of vinegar. What happens? (a) very little fizzing (b) the balloon bursts (c) it turns to honey (d) a huge eruption
18. 18.True or false: freezing water is a change that cannot be undone. (a) False (b) True
19. 19.True or false: sunlight is not needed for a seed to sprout. (a) True (b) False
20. 20.True or false: cotton wool is not needed for sprouting seeds. (a) False (b) True
21. 21.🔮 Predict: seeds on wet cotton are kept in a dark cupboard. Will they sprout? (a) no, never (b) they turn to stones (c) yes, they sprout (d) they melt
22. 22.🧺 Which of these is not needed for the yeast balloon? (a) a comb (b) warm water (c) a balloon (d) sugar
23. 23.🧺 Do we need a small bowl for sprouting seeds? (a) not needed (b) needed
24. 24.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a shallow dish (c) a piece of string (d) a mirror
25. 25.True or false: sugar water is an acid. (a) True (b) False
26. 26.🍞 Does yeast need sugar to make gas? (a) yeast needs it (b) yeast does not need it
27. 27.🛟 What should you do after handling muddy water? (a) nothing is needed (b) lick your fingers (c) wash hands afterwards (d) wipe hands on face
28. 28.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) turmeric powder (c) a magnet (d) lemon juice
29. 29.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a battery cell (c) a magnet (d) warm water
30. 30.True or false: a mirror is needed for making butter. (a) True (b) False
31. 31.🫧 Which of these is a base? (a) baking soda water (b) salt water (c) orange juice (d) lemon juice
32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we measure it (c) we keep it the same
33. 33.🔍 What do you see inside the plastic bag after a few hours in the sun? (a) salt crystals (b) tiny insects (c) tiny water drops (d) nothing at all
34. 34.True or false: warm water is needed for growing salt crystals. (a) False (b) True
35. 35.⚖️ Fair test — do seeds need water to sprout? What do we do with “the kind of seeds”? (a) we keep it the same (b) we measure it (c) we change it
36. 36.🛟 Lemon juice stings cuts and eyes. What should you do after the experiment? (a) skip washing (b) wash your hands (c) lick your fingers (d) rub your eyes
37. 37.🧺 Do we need a jar with a tight lid for making butter? (a) not needed (b) needed
38. 38.🌱 Will these sprout: seeds in the freezer? (a) sprouts (b) does not sprout
39. 39.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: size of the balloon is what we measure. (a) True (b) False
40. 40.True or false: freezing water is a change that can be undone. (a) True (b) False

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