Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 608 · 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.True or false: warm water is something yeast needs. (a) False (b) True
2. 2.🧺 Do we need a few days for sprouting seeds? (a) needed (b) not needed
3. 3.🧺 Do we need a mirror for the leafy bag test? (a) needed (b) not needed
4. 4.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
5. 5.🛟 Why must a plastic bag never go over anyone’s head? (a) it can block breathing (b) it is too big (c) it changes colour (d) it gets wet
6. 6.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a piece of string (c) a spoon (d) a balloon
7. 7.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
8. 8.🔍 Which is the odd one out? (a) milk turning to curd (b) cooking an egg (c) browning lemon ink (d) melting ice
9. 9.True or false: lemon juice is a base. (a) True (b) False
10. 10.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) soap solution (c) lemon juice (d) white paper strips
11. 11.🔍 Which is the odd one out? (a) baking soda water (b) plain water (c) sugar water (d) salt water
12. 12.True or false: small stones from dal is done by handpicking. (a) True (b) False
13. 13.🧺 Which of these is not needed for the fizzy balloon? (a) a funnel or spoon (b) a magnet (c) baking soda (d) vinegar
14. 14.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) wash hands afterwards (c) lick your fingers (d) nothing is needed
15. 15.🔍 Which is the odd one out? (a) ironing the paper (b) letting the paper dry (c) putting the iron away (d) plugging in the iron
16. 16.True or false: chalk powder dissolves in water. (a) True (b) False
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we keep it the same (c) we change it
18. 18.🌱 What comes out of a moong seed first when it sprouts? (a) a thorn (b) a tiny root (c) a fruit (d) a flower
19. 19.🧺 Do we need white paper for the secret lemon message? (a) not needed (b) needed
20. 20.🔍 Which is the odd one out? (a) vinegar (b) a magnet (c) salt (d) sugar
21. 21.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it stays yellow (c) it turns black (d) it turns red
22. 22.🔍 Which is the odd one out? (a) dissolving salt (b) browning lemon ink (c) melting butter (d) freezing water
23. 23.🌱 Which of these is not needed for a seed to sprout? (a) salt (b) warmth (c) air (d) water
24. 24.🪴 Which part of a plant does this job: make food in sunlight? (a) stem (b) flower (c) roots (d) leaves
25. 25.True or false: make seeds is a job of the leaves. (a) True (b) False
26. 26.True or false: yeast is not needed for the leafy bag test. (a) True (b) False
27. 27.True or false: baking soda water is neutral. (a) False (b) True
28. 28.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we keep it the same (b) we measure it (c) we change it
29. 29.🧺 Do we need a battery cell for the muddy water filter? (a) not needed (b) needed
30. 30.📘 What do we call plants giving out water vapour from their leaves? (a) reflection (b) digestion (c) transpiration (d) germination
31. 31.🌱 Which of these sprouts in a few days? (a) seeds in the freezer (b) seeds on dry cotton (c) seeds on wet cotton (d) boiled seeds
32. 32.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) fresh cream (b) a bowl (c) a timer (d) a battery cell
33. 33.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) nothing (c) the salt (d) the mud
34. 34.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: size of the balloon is the one thing we change. (a) True (b) False
35. 35.🛟 Why is a plastic jar a good choice for shaking? (a) it is hotter (b) it will not break (c) it is magnetic (d) it is heavier
36. 36.True or false: baking a cake is a change that can be undone. (a) False (b) True
37. 37.🍋 Which of these steps is a job for an adult? (a) letting the paper dry (b) writing the message (c) reading the message (d) ironing the paper
38. 38.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the amount of yeast”? (a) we measure it (b) we keep it the same (c) we change it
39. 39.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) a balloon (c) water (d) turmeric powder
40. 40.🍞 Which of these is something yeast does not need? (a) warm water (b) salt (c) time (d) sugar

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