Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 454 · 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 not needed for the leafy bag test? (a) a mirror (b) a rubber band (c) a clear plastic bag (d) sunlight
2. 2.🛟 The water for the yeast should be ___. (a) ice cold (b) warm, not hot (c) very salty (d) boiling hot
3. 3.🫗 How do we separate mud from water? (a) sieving (b) winnowing (c) handpicking (d) filtering
4. 4.True or false: sand and pebbles is not needed for the muddy water filter. (a) True (b) False
5. 5.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the same bottles is the one thing we change. (a) True (b) False
6. 6.True or false: a clear plastic bag is not needed for the leafy bag test. (a) True (b) False
7. 7.🔍 Which is the odd one out? (a) baking a cake (b) dissolving salt (c) melting ice (d) folding paper
8. 8.True or false: detergent water is a base. (a) False (b) True
9. 9.⚖️ 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) the time we wait (b) amount of water drops (c) sun or shade (d) the kind of plant
10. 10.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the ironing time”? (a) we measure it (b) we change it (c) we keep it the same
11. 11.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
12. 12.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) sugar crystals form (b) it turns to oil (c) salt crystals form (d) it turns to butter
13. 13.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) vinegar (c) soap solution (d) tamarind water
14. 14.True or false: rusting iron is a change that can be undone. (a) True (b) False
15. 15.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) turmeric powder (b) a few hours (c) a potted plant (d) sunlight
16. 16.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is the one thing we change? (a) the water temperature (b) size of the balloon (c) the amount of yeast (d) the amount of water
17. 17.🔮 Predict: you use plain water instead of vinegar. What happens? (a) the balloon bursts (b) it turns to honey (c) a huge eruption (d) very little fizzing
18. 18.🫧 Which of these is a base? (a) sugar water (b) baking soda water (c) curd (d) orange juice
19. 19.🧂 Why do crystals appear as the dish dries? (a) the dish melts (b) water evaporates (c) salt eats water (d) salt grows roots
20. 20.True or false: a magnet is needed for the muddy water filter. (a) False (b) True
21. 21.🛟 What should you do if vinegar splashes in your eye? (a) rub it hard (b) add baking soda (c) ignore it (d) rinse with clean water
22. 22.📘 What do we call something that changes colour to show an acid or a base? (a) a magnet (b) a prism (c) a pulley (d) an indicator
23. 23.🔍 Which is the odd one out? (a) soap solution (b) orange juice (c) detergent water (d) baking soda water
24. 24.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) detergent water (d) salt water
25. 25.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a clear plastic bag (b) sunlight (c) a mirror (d) a few hours
26. 26.True or false: tamarind water turns turmeric reddish-brown. (a) False (b) True
27. 27.🧺 Which of these is needed for sprouting seeds? (a) a balloon (b) a few days (c) a magnet (d) yeast
28. 28.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a mirror (c) turmeric powder (d) a balloon
29. 29.🧈 Can this change be undone: freezing water? (a) can be undone (b) cannot be undone
30. 30.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the same dish”? (a) we keep it the same (b) we change it (c) we measure it
31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we keep it the same (c) we measure it
32. 32.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: spoons of baking soda is what we measure. (a) False (b) True
33. 33.True or false: cold water to rinse is not needed for making butter. (a) True (b) False
34. 34.🫧 What do you see when baking soda meets vinegar? (a) it glows in the dark (b) lots of fizzy bubbles (c) it turns to ice (d) nothing at all
35. 35.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “time to make butter”? (a) we change it (b) we keep it the same (c) we measure it
36. 36.🧺 Which of these is not needed for the fizzy balloon? (a) baking soda (b) a battery cell (c) a funnel or spoon (d) a tray for spills
37. 37.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “the cream temperature”? (a) we keep it the same (b) we measure it (c) we change it
38. 38.🧺 Which of these is needed for making butter? (a) a magnet (b) a battery cell (c) fresh cream (d) yeast
39. 39.🧺 Which of these is not needed for sprouting seeds? (a) a battery cell (b) water (c) a small bowl (d) moong seeds
40. 40.⚖️ 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 measure it (b) we change it (c) we keep it the same

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