Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 975 · 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.📘 What do we call a seed starting to grow? (a) pollination (b) condensation (c) evaporation (d) germination
2. 2.🌱 Is water needed for a seed to sprout? (a) not needed to sprout (b) needed to sprout
3. 3.🧺 Which of these is not needed for sprouting seeds? (a) cotton wool (b) a few days (c) moong seeds (d) a magnet
4. 4.🍋 Secret message: who does this step — dipping the cotton bud? (a) an adult does it (b) a child can do it
5. 5.🧺 Which of these is needed for the turmeric test? (a) water (b) a comb (c) a battery cell (d) a balloon
6. 6.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the amount of vinegar”? (a) we measure it (b) we change it (c) we keep it the same
7. 7.🫧 Is sugar water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
8. 8.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it turns sweet (b) it fizzes (c) crystals grow faster (d) few or no crystals
9. 9.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: spoons of baking soda is the one thing we change. (a) True (b) False
10. 10.🔮 Predict: seeds on wet cotton are kept in the freezer. What happens? (a) they grow fruit (b) they glow (c) they do not sprout (d) they sprout faster
11. 11.🍋 Which of these steps is a job a child can do? (a) plugging in the iron (b) ironing the paper (c) writing the message (d) putting the iron away
12. 12.🛟 Why is a plastic jar a good choice for shaking? (a) it will not break (b) it is hotter (c) it is heavier (d) it is magnetic
13. 13.🫧 Which of these is an acid? (a) plain water (b) detergent water (c) curd (d) baking soda water
14. 14.🪴 Which of these is a job of the flower? (a) take in water from soil (b) make food in sunlight (c) make seeds (d) hold up the leaves
15. 15.🟡 Which of these turns turmeric reddish-brown? (a) baking soda water (b) sugar water (c) plain water (d) salt water
16. 16.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
17. 17.🔮 Predict: you write with plain water instead of lemon juice. What appears after ironing? (a) blue words (b) dark brown words (c) almost nothing (d) a rainbow
18. 18.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the amount of sugar”? (a) we change it (b) we measure it (c) we keep it the same
19. 19.🧺 Do we need a seed for the fizzy balloon? (a) not needed (b) needed
20. 20.True or false: a potted plant is needed for the leafy bag test. (a) True (b) False
21. 21.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) folding paper (c) melting ice (d) cooking an egg
22. 22.🛟 Why must a plastic bag never go over anyone’s head? (a) it gets wet (b) it can block breathing (c) it is too big (d) it changes colour
23. 23.🌱 Will these sprout: seeds in the freezer? (a) sprouts (b) does not sprout
24. 24.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) your school uniform (c) a white party dress (d) your best clothes
25. 25.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) the salt (c) the mud (d) nothing
26. 26.🫧 Which of these is a base? (a) lemon juice (b) soap solution (c) vinegar (d) orange juice
27. 27.🍞 Does yeast need time to make gas? (a) yeast does not need it (b) yeast needs it
28. 28.🍋 Why can’t you see the lemon writing once it dries? (a) dry juice is see-through (b) it turned into air (c) the paper ate it (d) the ink is magnetic
29. 29.True or false: plain water is an acid. (a) True (b) False
30. 30.True or false: a balloon is needed for sprouting seeds. (a) True (b) False
31. 31.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: sun or shade is kept the same. (a) True (b) False
32. 32.🍞 Which of these is something yeast needs? (a) sunlight (b) a magnet (c) warm water (d) vinegar
33. 33.🍋 Which of these steps is a job for an adult? (a) writing the message (b) ironing the paper (c) dipping the cotton bud (d) reading the message
34. 34.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) warm water (c) a piece of string (d) a mirror
35. 35.True or false: letting the paper dry is a job for an adult. (a) True (b) False
36. 36.🧺 Which of these is needed for making butter? (a) fresh cream (b) a balloon (c) turmeric powder (d) a battery cell
37. 37.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “days to see crystals”? (a) we measure it (b) we keep it the same (c) we change it
38. 38.🔮 Predict: you stop shaking after only one minute. What do you have? (a) butter lumps (b) cheese (c) still runny cream (d) ghee
39. 39.🛟 The water for the yeast should be ___. (a) warm, not hot (b) boiling hot (c) very salty (d) ice cold
40. 40.🛟 How should the plastic bag be tied around the branch? (a) as tight as possible (b) with a hot glue gun (c) gently, not too tight (d) with sharp wire

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