Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 908 · 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.🍋 Which of these steps is a job for an adult? (a) putting the iron away (b) reading the message (c) letting the paper dry (d) dipping the cotton bud
2. 2.🌱 Which of these is needed for a seed to sprout? (a) salt (b) sunlight (c) soil (d) water
3. 3.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the amount poured (b) the same glass (c) how clear the water is (d) the same funnel
4. 4.True or false: a balloon is not needed for the fizzy balloon. (a) True (b) False
5. 5.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is what we measure? (a) the same bottles (b) the amount of yeast (c) size of the balloon (d) the water temperature
6. 6.🧂 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
7. 7.🔍 Which is the odd one out? (a) chalk powder (b) cooking oil (c) small pebbles (d) table salt
8. 8.🧂 Which of these dissolves in water? (a) small pebbles (b) chalk powder (c) sawdust (d) sugar
9. 9.🌱 Which of these does not sprout? (a) wet seeds in the dark (b) seeds on dry cotton (c) wet seeds by a window (d) seeds on wet cotton
10. 10.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
11. 11.⚖️ Fair test — do seeds need water to sprout? What do we do with “how many seeds sprout”? (a) we measure it (b) we keep it the same (c) we change it
12. 12.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a potted plant (b) a clear plastic bag (c) a few hours (d) turmeric powder
13. 13.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is the one thing we change? (a) the time we wait (b) the kind of plant (c) sun or shade (d) the same kind of bag
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the turmeric paper (c) the liquid we test
15. 15.🔮 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
16. 16.⚖️ 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
17. 17.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) yeast (b) a cotton bud (c) lemon juice (d) white paper
18. 18.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the kind of balloon”? (a) we measure it (b) we change it (c) we keep it the same
19. 19.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is kept the same. (a) False (b) True
20. 20.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) sand and pebbles (c) yeast (d) a battery cell
21. 21.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it stays yellow (c) it turns blue (d) it turns black
22. 22.🔮 Predict: you use more vinegar and more baking soda. What happens to the balloon? (a) there is no change (b) it shrinks (c) it grows bigger (d) it turns blue
23. 23.True or false: wet seeds in the dark does not sprout. (a) False (b) True
24. 24.⚖️ Fair test — do seeds need water to sprout? Which of these is the one thing we change? (a) wet or dry cotton (b) how many seeds sprout (c) the same bowls (d) the number of seeds
25. 25.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a shallow dish (c) a spoon (d) turmeric powder
26. 26.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is the one thing we change. (a) False (b) True
27. 27.🧺 Do we need a magnet for growing salt crystals? (a) needed (b) not needed
28. 28.🛟 Who should use the hot iron in the secret message experiment? (a) whoever is fastest (b) only an adult (c) the youngest child (d) any child
29. 29.🧺 Which of these is needed for the leafy bag test? (a) a mirror (b) yeast (c) a battery cell (d) a few hours
30. 30.🌱 Which of these is not needed for a seed to sprout? (a) warmth (b) water (c) air (d) sunlight
31. 31.🔮 Predict: you tie a bag on a branch with no leaves. Will it collect much water? (a) exactly the same (b) much more water (c) much less water (d) it fills with soil
32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the liquid we test (c) the colour we see (d) the turmeric paper
33. 33.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
34. 34.🧺 Do we need a seed for the fizzy balloon? (a) not needed (b) needed
35. 35.🍋 Secret message: who does this step — writing the message? (a) an adult does it (b) a child can do it
36. 36.🫗 How do we separate mud from water? (a) winnowing (b) evaporating (c) filtering (d) handpicking
37. 37.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is kept the same? (a) size of the balloon (b) the water temperature (c) the amount of water
38. 38.🔍 Which is the odd one out? (a) dipping the cotton bud (b) reading the message (c) letting the paper dry (d) cutting the lemon
39. 39.🪴 Which part of a plant does this job: hold the plant in soil? (a) stem (b) leaves (c) roots (d) flower
40. 40.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) it stays white (c) green (d) reddish-brown

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