Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 962 · 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: curd is an acid. (a) True (b) False
2. 2.🧺 Which of these is not needed for the leafy bag test? (a) a potted plant (b) turmeric powder (c) a few hours (d) a clear plastic bag
3. 3.🔮 Predict: the jar is filled right to the top with cream. What happens? (a) it takes much longer (b) it makes salt (c) it turns pink (d) it is much faster
4. 4.🍋 Which of these steps is a job for an adult? (a) dipping the cotton bud (b) writing the message (c) letting the paper dry (d) ironing the paper
5. 5.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) turmeric powder (c) a battery cell (d) a clean glass
6. 6.⚖️ 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 same bottle (c) spoons of baking soda (d) the kind of balloon
7. 7.True or false: yeast is needed for sprouting seeds. (a) True (b) False
8. 8.🧺 Do we need a magnet for the fizzy balloon? (a) not needed (b) needed
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) False (b) True
10. 10.🛟 Who should pour the warm water for the crystal experiment? (a) a grown-up (b) the youngest child (c) nobody needs to (d) a friend who is running
11. 11.True or false: a comb is needed for the fizzy balloon. (a) True (b) False
12. 12.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “spoons of baking soda”? (a) we keep it the same (b) we change it (c) we measure it
13. 13.🛟 Why must the jar lid be screwed on tightly? (a) so cream does not spill (b) so air gets out (c) so it turns yellow (d) so it gets hot
14. 14.🧺 Do we need yeast for sprouting seeds? (a) needed (b) not needed
15. 15.🌱 Will these sprout: seeds on dry cotton? (a) sprouts (b) does not sprout
16. 16.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the size of the plant”? (a) we change it (b) we keep it the same (c) we measure it
17. 17.🛟 How should the plastic bag be tied around the branch? (a) with a hot glue gun (b) gently, not too tight (c) as tight as possible (d) with sharp wire
18. 18.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “sun or shade”? (a) we keep it the same (b) we change it (c) we measure it
19. 19.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it flowers more (b) it wilts and droops (c) it turns blue (d) it grows faster
20. 20.🧺 Do we need a battery cell for the secret lemon message? (a) not needed (b) needed
21. 21.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a spoon (c) yeast (d) warm water
22. 22.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
23. 23.🧺 Which of these is not needed for the muddy water filter? (a) a magnet (b) a funnel (c) sand and pebbles (d) a clean glass
24. 24.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is the one thing we change. (a) True (b) False
25. 25.🛟 Why is a plastic jar a good choice for shaking? (a) it will not break (b) it is magnetic (c) it is hotter (d) it is heavier
26. 26.🧺 Which of these is not needed for the secret lemon message? (a) lemon juice (b) a battery cell (c) white paper (d) a cotton bud
27. 27.🧺 Which of these is not needed for the fizzy balloon? (a) a balloon (b) a battery cell (c) baking soda (d) a tray for spills
28. 28.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) an acid (c) neutral
29. 29.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) muddy water (c) cotton or cloth (d) a mirror
30. 30.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the same bottle”? (a) we change it (b) we measure it (c) we keep it the same
31. 31.True or false: writing the message is a job for an adult. (a) True (b) False
32. 32.🧂 Which of these dissolves in water? (a) small pebbles (b) cooking oil (c) food colour (d) chalk powder
33. 33.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) detergent water (c) lemon juice (d) baking soda water
34. 34.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the same kind of bag is what we measure. (a) False (b) True
35. 35.True or false: soap solution turns turmeric reddish-brown. (a) True (b) False
36. 36.🫧 Which of these is a base? (a) salt water (b) plain water (c) lemon juice (d) baking soda water
37. 37.🧺 Do we need yeast for making butter? (a) not needed (b) needed
38. 38.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we change it (b) we keep it the same (c) we measure it
39. 39.🛟 Why must a plastic bag never go over anyone’s head? (a) it is too big (b) it can block breathing (c) it gets wet (d) it changes colour
40. 40.🔮 Predict: seeds on wet cotton are kept in a dark cupboard. Will they sprout? (a) they turn to stones (b) no, never (c) yes, they sprout (d) they melt

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