Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 733 · 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.⚖️ 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 same kind of bag (b) amount of water drops (c) the size of the plant (d) sun or shade
2. 2.🔮 Predict: the jar is filled right to the top with cream. What happens? (a) it is much faster (b) it makes salt (c) it takes much longer (d) it turns pink
3. 3.⚖️ Fair test — do seeds need water to sprout? Which of these is the one thing we change? (a) the same place (b) the kind of seeds (c) how many seeds sprout (d) wet or dry cotton
4. 4.🧺 Which of these is not needed for sprouting seeds? (a) water (b) moong seeds (c) a battery cell (d) a small bowl
5. 5.🍞 Which of these is something yeast needs? (a) sunlight (b) salt (c) vinegar (d) sugar
6. 6.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it dissolves (b) it sinks to the bottom (c) it turns to sand (d) it floats on top
7. 7.True or false: a dropper or spoon is not needed for the turmeric test. (a) False (b) True
8. 8.True or false: a magnet is needed for the muddy water filter. (a) True (b) False
9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we keep it the same (b) we measure it (c) we change it
10. 10.🔮 Predict: you use more vinegar and more baking soda. What happens to the balloon? (a) there is no change (b) it grows bigger (c) it turns blue (d) it shrinks
11. 11.🔍 What do you see inside the plastic bag after a few hours in the sun? (a) tiny insects (b) tiny water drops (c) nothing at all (d) salt crystals
12. 12.🧺 Do we need a balloon for the fizzy balloon? (a) not needed (b) needed
13. 13.True or false: salt water is neutral. (a) False (b) True
14. 14.🫗 Which of these is done by evaporating? (a) mud from water (b) husk from rice grain (c) chaff from wheat grain (d) salt from sea water
15. 15.🌱 Is air needed for a seed to sprout? (a) needed to sprout (b) not needed to sprout
16. 16.🧺 Do we need a magnet for sprouting seeds? (a) needed (b) not needed
17. 17.🧈 Can this change be undone: dissolving salt? (a) can be undone (b) cannot be undone
18. 18.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) baking soda (b) a tray for spills (c) an empty bottle (d) a mirror
19. 19.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is kept the same? (a) the same kind of bag (b) sun or shade (c) amount of water drops
20. 20.True or false: white paper strips is not needed for the turmeric test. (a) True (b) False
21. 21.True or false: freezing water is a change that cannot be undone. (a) True (b) False
22. 22.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “how dark the writing is”? (a) we change it (b) we measure it (c) we keep it the same
23. 23.🧺 Do we need a magnet for the muddy water filter? (a) needed (b) not needed
24. 24.🧂 Which of these dissolves in water? (a) food colour (b) chalk powder (c) small pebbles (d) sand
25. 25.🧺 Which of these is needed for the muddy water filter? (a) a clean glass (b) a battery cell (c) a mirror (d) a magnet
26. 26.🌱 Which of these sprouts in a few days? (a) boiled seeds (b) wet seeds in the dark (c) seeds on dry cotton (d) seeds in the freezer
27. 27.🧺 Do we need turmeric powder for sprouting seeds? (a) not needed (b) needed
28. 28.True or false: a balloon is needed for the fizzy balloon. (a) True (b) False
29. 29.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the same cotton bud is the one thing we change. (a) False (b) True
30. 30.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a spoon (c) a shallow dish (d) a battery cell
31. 31.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a balloon (c) lemon juice (d) a battery cell
32. 32.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a balloon (b) a comb (c) vinegar (d) baking soda
33. 33.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is the one thing we change. (a) False (b) True
34. 34.🔮 Predict: you use plain water instead of vinegar. What happens? (a) it turns to honey (b) very little fizzing (c) the balloon bursts (d) a huge eruption
35. 35.🧺 Which of these is needed for growing salt crystals? (a) a spoon (b) a balloon (c) a magnet (d) turmeric powder
36. 36.🧺 Which of these is needed for the yeast balloon? (a) a battery cell (b) turmeric powder (c) a magnet (d) a small bottle
37. 37.🔍 Which is the odd one out? (a) folding paper (b) melting butter (c) baking a cake (d) freezing water
38. 38.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) water (c) a balloon (d) a mirror
39. 39.🛟 What should you do if vinegar splashes in your eye? (a) rinse with clean water (b) ignore it (c) rub it hard (d) add baking soda
40. 40.🧺 Do we need a mirror for making butter? (a) needed (b) not needed

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