Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 950 · 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.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
2. 2.🫧 Which of these is a base? (a) plain water (b) salt water (c) lemon juice (d) baking soda water
3. 3.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the kind of balloon is the one thing we change. (a) True (b) False
4. 4.🛟 What should you do if vinegar splashes in your eye? (a) rub it hard (b) rinse with clean water (c) add baking soda (d) ignore it
5. 5.True or false: melting ice is a change that cannot be undone. (a) True (b) False
6. 6.🍋 Which of these steps is a job a child can do? (a) plugging in the iron (b) letting the paper dry (c) putting the iron away (d) ironing the paper
7. 7.🧺 Do we need a small bottle for the yeast balloon? (a) needed (b) not needed
8. 8.🪴 Which of these is a job of the leaves? (a) hold the plant in soil (b) take in water from soil (c) make seeds (d) give out water vapour
9. 9.True or false: make food in sunlight is a job of the leaves. (a) True (b) False
10. 10.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a few days (b) moong seeds (c) cotton wool (d) a battery cell
11. 11.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the kind of balloon”? (a) we change it (b) we keep it the same (c) we measure it
12. 12.🔍 Which is the odd one out? (a) sugar water (b) lemon juice (c) curd (d) vinegar
13. 13.🧺 Which of these is needed for the secret lemon message? (a) a mirror (b) a balloon (c) lemon juice (d) a battery cell
14. 14.🔮 Predict: seeds on wet cotton are kept in a dark cupboard. Will they sprout? (a) no, never (b) yes, they sprout (c) they melt (d) they turn to stones
15. 15.True or false: a tray for spills is not needed for the fizzy balloon. (a) False (b) True
16. 16.True or false: curd is a base. (a) False (b) True
17. 17.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a jar with a tight lid (b) a bowl (c) a balloon (d) fresh cream
18. 18.🧺 Do we need turmeric powder for sprouting seeds? (a) not needed (b) needed
19. 19.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a bowl (b) a mirror (c) a jar with a tight lid (d) cold water to rinse
20. 20.⚖️ 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 same kind of bag (c) the size of the plant (d) the kind of plant
21. 21.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) lemon juice (b) a cotton bud (c) a mirror (d) an adult with an iron
22. 22.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the kind of juice”? (a) we change it (b) we measure it (c) we keep it the same
23. 23.🫧 Which of these is a base? (a) salt water (b) orange juice (c) detergent water (d) vinegar
24. 24.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a bowl (b) cold water to rinse (c) fresh cream (d) a magnet
25. 25.⚖️ Fair test — do seeds need water to sprout? What do we do with “how many seeds sprout”? (a) we change it (b) we keep it the same (c) we measure it
26. 26.🧈 Before the butter appears, what does the cream turn into? (a) clear water (b) ice (c) powder (d) thick whipped cream
27. 27.🧺 Which of these is not needed for making butter? (a) a bowl (b) a jar with a tight lid (c) turmeric powder (d) a timer
28. 28.🍋 Secret message: who does this step — ironing the paper? (a) a child can do it (b) an adult does it
29. 29.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a balloon (c) water (d) yeast
30. 30.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a rubber band (b) sunlight (c) yeast (d) a potted plant
31. 31.True or false: orange juice is an acid. (a) False (b) True
32. 32.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) milk turning to curd (c) baking a cake (d) melting butter
33. 33.🍞 Where is yeast used in the kitchen? (a) to wash dishes (b) to clean floors (c) to make bread rise (d) to colour rice
34. 34.True or false: a balloon is needed for sprouting seeds. (a) True (b) False
35. 35.🧺 Do we need a magnet for growing salt crystals? (a) not needed (b) needed
36. 36.🧈 What is the watery liquid left after the butter forms? (a) honey (b) vinegar (c) oil (d) buttermilk
37. 37.🧺 Do we need cotton wool for sprouting seeds? (a) needed (b) not needed
38. 38.🧺 Which of these is needed for the fizzy balloon? (a) a battery cell (b) a tray for spills (c) a seed (d) sugar
39. 39.🫧 Is sugar water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
40. 40.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) white at once (c) bright blue (d) reddish

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