Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 61 · 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 is the odd one out? (a) putting the iron away (b) dipping the cotton bud (c) writing the message (d) letting the paper dry
2. 2.🧺 Which of these is needed for the leafy bag test? (a) turmeric powder (b) a rubber band (c) a battery cell (d) yeast
3. 3.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
4. 4.🔍 Which is the odd one out? (a) air (b) warmth (c) sunlight (d) water
5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
6. 6.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a magnet (c) turmeric powder (d) soap solution
7. 7.🛟 Why must children keep their fingers away from the iron? (a) it is sticky (b) it is magnetic (c) it can burn skin (d) it is cold
8. 8.True or false: a balloon is not needed for the yeast balloon. (a) True (b) False
9. 9.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) yeast (b) a funnel (c) cotton or cloth (d) muddy water
10. 10.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) detergent water (c) lemon juice (d) sugar water
11. 11.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) few or no crystals (c) crystals grow faster (d) it turns sweet
12. 12.🔍 Which is the odd one out? (a) warmth (b) air (c) water (d) soil
13. 13.⚖️ 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) size of the balloon (c) the amount of yeast (d) the amount of sugar
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we keep it the same (b) we change it (c) we measure it
15. 15.🫧 Which of these is an acid? (a) curd (b) salt water (c) plain water (d) baking soda water
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) the amount of sugar (c) the amount of water (d) the amount of yeast
17. 17.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a comb (b) an empty bottle (c) a funnel or spoon (d) a balloon
18. 18.True or false: a mirror is needed for making butter. (a) False (b) True
19. 19.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the same cotton bud”? (a) we measure it (b) we change it (c) we keep it the same
20. 20.🔍 Which is the odd one out? (a) putting the iron away (b) ironing the paper (c) writing the message (d) cutting the lemon
21. 21.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of sugar is kept the same. (a) False (b) True
22. 22.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a battery cell (c) muddy water (d) cotton or cloth
23. 23.🧂 Why do crystals appear as the dish dries? (a) salt grows roots (b) salt eats water (c) the dish melts (d) water evaporates
24. 24.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is kept the same? (a) the same bottles (b) the water temperature (c) size of the balloon
25. 25.True or false: plugging in the iron is a job for an adult. (a) True (b) False
26. 26.True or false: dipping the cotton bud is a job a child can do. (a) False (b) True
27. 27.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) the amount of vinegar (b) spoons of baking soda (c) size of the balloon (d) the same bottle
28. 28.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) baking soda (b) a balloon (c) sugar (d) a tray for spills
29. 29.🧈 Which of these is a change that cannot be undone? (a) milk turning to curd (b) melting ice (c) freezing water (d) folding paper
30. 30.🔍 Which is the odd one out? (a) dipping the cotton bud (b) reading the message (c) writing the message (d) ironing the paper
31. 31.🧺 Do we need a paper clip for the yeast balloon? (a) not needed (b) needed
32. 32.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “size of the balloon”? (a) we keep it the same (b) we change it (c) we measure it
33. 33.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) sugar water (c) salt water (d) soap solution
34. 34.True or false: lemon juice is an acid. (a) False (b) True
35. 35.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the kind of salt”? (a) we measure it (b) we keep it the same (c) we change it
36. 36.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
37. 37.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) water (b) moong seeds (c) cotton wool (d) a mirror
38. 38.🛟 What should you do if vinegar splashes in your eye? (a) rinse with clean water (b) rub it hard (c) add baking soda (d) ignore it
39. 39.True or false: vinegar keeps turmeric yellow. (a) True (b) False
40. 40.🎈 Why does the balloon blow up? (a) gas is made inside (b) vinegar is hot (c) the bottle shrinks (d) outside air gets in

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