Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 513 · 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 is needed for the muddy water filter? (a) turmeric powder (b) sand and pebbles (c) yeast (d) a magnet
2. 2.🔮 Predict: which gives more drops in the bag — a hot sunny day or a cool cloudy day? (a) the hot sunny day (b) both the same (c) the cool cloudy day (d) neither of them
3. 3.🧺 Which of these is not needed for sprouting seeds? (a) a few days (b) water (c) moong seeds (d) turmeric powder
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) True (b) False
5. 5.🧺 Which of these is not needed for the leafy bag test? (a) a battery cell (b) sunlight (c) a clear plastic bag (d) a potted plant
6. 6.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) bigger crystals (c) liquid crystals (d) smaller crystals
7. 7.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the amount of vinegar”? (a) we keep it the same (b) we change it (c) we measure it
8. 8.🍋 Which of these steps is a job a child can do? (a) dipping the cotton bud (b) ironing the paper (c) putting the iron away (d) cutting the lemon
9. 9.True or false: yeast is not needed for sprouting seeds. (a) False (b) True
10. 10.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a mirror (c) a balloon (d) salt
11. 11.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it turns sweet (b) crystals grow faster (c) it fizzes (d) few or no crystals
12. 12.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the amount of water”? (a) we change it (b) we measure it (c) we keep it the same
13. 13.🔍 Which is the odd one out? (a) water (b) salt (c) sunlight (d) sugar
14. 14.🍞 Which of these is something yeast does not need? (a) time (b) a magnet (c) warm water (d) sugar
15. 15.True or false: a clean glass is not needed for the muddy water filter. (a) False (b) True
16. 16.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) sugar crystals form (b) it turns to butter (c) salt crystals form (d) it turns to oil
17. 17.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) white paper strips (c) a mirror (d) turmeric powder
18. 18.🔍 Which is the odd one out? (a) curd (b) orange juice (c) sugar water (d) lemon juice
19. 19.📘 What do we call a seed starting to grow? (a) germination (b) pollination (c) condensation (d) evaporation
20. 20.True or false: white paper strips is needed for the turmeric test. (a) False (b) True
21. 21.🧺 Do we need a mirror for making butter? (a) not needed (b) needed
22. 22.🧺 Do we need a mirror for the secret lemon message? (a) not needed (b) needed
23. 23.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a small bowl (b) moong seeds (c) cotton wool (d) yeast
24. 24.🔮 Predict: the adult irons for only one second. What happens? (a) writing turns green (b) it gets darker (c) the paper floats (d) writing stays faint
25. 25.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is what we measure? (a) the kind of juice (b) the ironing time (c) the iron setting (d) how dark the writing is
26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we keep it the same (c) we change it
27. 27.⚖️ Fair test — do seeds need water to sprout? What do we do with “the number of seeds”? (a) we change it (b) we keep it the same (c) we measure it
28. 28.True or false: seeds on dry cotton does not sprout. (a) True (b) False
29. 29.True or false: baking soda is needed for the fizzy balloon. (a) True (b) False
30. 30.True or false: a mirror is not needed for the secret lemon message. (a) True (b) False
31. 31.🌱 Which of these is needed for a seed to sprout? (a) soil (b) air (c) sunlight (d) salt
32. 32.🍋 Which of these steps is a job for an adult? (a) reading the message (b) dipping the cotton bud (c) putting the iron away (d) writing the message
33. 33.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sip each liquid (c) sniff each bottle hard (d) mix bathroom cleaners
34. 34.🔮 Predict: you use more vinegar and more baking soda. What happens to the balloon? (a) it shrinks (b) there is no change (c) it turns blue (d) it grows bigger
35. 35.🧺 Which of these is not needed for making butter? (a) fresh cream (b) a balloon (c) a timer (d) a jar with a tight lid
36. 36.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the kind of plant is kept the same. (a) True (b) False
37. 37.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is kept the same. (a) False (b) True
38. 38.⚖️ 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 size of the plant (c) the same kind of bag (d) the kind of plant
39. 39.🔍 Which is the odd one out? (a) writing the message (b) cutting the lemon (c) plugging in the iron (d) ironing the paper
40. 40.🔍 Which is the odd one out? (a) soap solution (b) lemon juice (c) tamarind water (d) vinegar

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