Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 713 · 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.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a jar with a tight lid (b) a timer (c) turmeric powder (d) a bowl
2. 2.🛟 Why is a plastic jar a good choice for shaking? (a) it is hotter (b) it is magnetic (c) it is heavier (d) it will not break
3. 3.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) use only kitchen items (c) mix bathroom cleaners (d) sip each liquid
4. 4.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) lemon juice (b) a small bowl (c) a balloon (d) white paper
5. 5.🫗 How do we separate tea leaves from tea? (a) filtering (b) sieving (c) evaporating (d) winnowing
6. 6.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) yeast (c) sand and pebbles (d) a clean glass
7. 7.True or false: white paper strips is needed for the turmeric test. (a) False (b) True
8. 8.🧺 Do we need a balloon for the fizzy balloon? (a) needed (b) not needed
9. 9.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) sugar water (d) detergent water
10. 10.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a tray for spills (b) baking soda (c) a mirror (d) a funnel or spoon
11. 11.🍋 What colour does the lemon writing turn when an adult warms it? (a) blue (b) green (c) brown (d) white
12. 12.True or false: warmth is needed for a seed to sprout. (a) True (b) False
13. 13.🛟 Why must children keep their fingers away from the iron? (a) it is cold (b) it is sticky (c) it can burn skin (d) it is magnetic
14. 14.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is the one thing we change. (a) True (b) False
15. 15.True or false: baking soda is not needed for the fizzy balloon. (a) False (b) True
16. 16.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) vinegar (d) baking soda water
17. 17.True or false: sugar is not needed for a seed to sprout. (a) False (b) True
18. 18.True or false: baking soda water is a base. (a) False (b) True
19. 19.🛟 Why must a plastic bag never go over anyone’s head? (a) it changes colour (b) it can block breathing (c) it gets wet (d) it is too big
20. 20.True or false: reading the message is a job a child can do. (a) True (b) False
21. 21.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of water is what we measure. (a) False (b) True
22. 22.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is what we measure? (a) the same paper (b) the iron setting (c) how dark the writing is (d) the ironing time
23. 23.True or false: dissolving salt is a change that can be undone. (a) False (b) True
24. 24.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
25. 25.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is the one thing we change? (a) the kind of juice (b) the ironing time (c) the same paper (d) the iron setting
26. 26.🛟 What should you do if vinegar splashes in your eye? (a) add baking soda (b) rinse with clean water (c) ignore it (d) rub it hard
27. 27.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the same muddy water (b) how clear the water is (c) the same glass (d) the filter material
28. 28.True or false: a jar with a tight lid is not needed for making butter. (a) True (b) False
29. 29.🫧 Which of these is neutral? (a) sugar water (b) lemon juice (c) curd (d) baking soda water
30. 30.True or false: a balloon is needed for the muddy water filter. (a) False (b) True
31. 31.🔮 Predict: you use more vinegar and more baking soda. What happens to the balloon? (a) it shrinks (b) it turns blue (c) there is no change (d) it grows bigger
32. 32.🔍 Which is the odd one out? (a) dipping the cotton bud (b) reading the message (c) ironing the paper (d) letting the paper dry
33. 33.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a comb (c) lemon juice (d) soap solution
34. 34.True or false: water is not needed for a seed to sprout. (a) True (b) False
35. 35.🧺 Do we need turmeric powder for growing salt crystals? (a) needed (b) not needed
36. 36.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a rubber band (b) a few hours (c) a potted plant (d) a battery cell
37. 37.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is kept the same? (a) the ironing time (b) the kind of juice (c) how dark the writing is
38. 38.True or false: a battery cell is needed for growing salt crystals. (a) False (b) True
39. 39.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns darker red (b) it disappears (c) it turns yellow again (d) it turns blue
40. 40.🟡 Why does soap solution change turmeric’s colour? (a) soap is magnetic (b) soap is an acid (c) soap is hot (d) soap water is a base

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