Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 903 · 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 cold cream turn into butter faster than warm cream? Which of these is kept the same? (a) time to make butter (b) the amount of cream (c) the cream temperature
2. 2.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
3. 3.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a mirror (c) a spoon (d) salt
4. 4.True or false: baking soda is not needed for the fizzy balloon. (a) False (b) True
5. 5.🍋 Secret message: who does this step — dipping the cotton bud? (a) a child can do it (b) an adult does it
6. 6.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
7. 7.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) baking soda (b) a battery cell (c) vinegar (d) a tray for spills
8. 8.True or false: give out water vapour is a job of the stem. (a) False (b) True
9. 9.🫧 Which of these is an acid? (a) baking soda water (b) sugar water (c) soap solution (d) orange juice
10. 10.🍞 Does yeast need time to make gas? (a) yeast does not need it (b) yeast needs it
11. 11.🛟 Who should pour the warm water for the crystal experiment? (a) a friend who is running (b) the youngest child (c) a grown-up (d) nobody needs to
12. 12.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) sugar (b) dry yeast (c) a magnet (d) a balloon
13. 13.🫗 Which of these is done by filtering? (a) mud from water (b) husk from rice grain (c) bad grains from rice (d) sugar from sugar water
14. 14.🔮 Predict: you leave out the sugar. What happens to the balloon? (a) it turns yellow (b) it bursts at once (c) it grows very little (d) it grows much faster
15. 15.🧺 Do we need an adult with an iron for the secret lemon message? (a) needed (b) not needed
16. 16.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a battery cell (c) a dropper or spoon (d) yeast
17. 17.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) yeast (c) lemon juice (d) turmeric powder
18. 18.🛟 Which safety rule fits the fizzy balloon experiment? (a) shake it near your face (b) keep it away from eyes (c) put it in your mouth (d) seal it in a glass jar
19. 19.🪴 Which of these is a job of the stem? (a) hold up the leaves (b) take in water from soil (c) hold the plant in soil (d) make seeds
20. 20.🛟 Lemon juice stings cuts and eyes. What should you do after the experiment? (a) wash your hands (b) rub your eyes (c) skip washing (d) lick your fingers
21. 21.🔍 Which is the odd one out? (a) warm water (b) vinegar (c) time (d) sugar
22. 22.📘 What do we call something that changes colour to show an acid or a base? (a) a pulley (b) a magnet (c) an indicator (d) a prism
23. 23.True or false: melting butter is a change that cannot be undone. (a) True (b) False
24. 24.🔮 Predict: you stop shaking after only one minute. What do you have? (a) cheese (b) ghee (c) butter lumps (d) still runny cream
25. 25.True or false: warm water is something yeast needs. (a) False (b) True
26. 26.🛟 How should the plastic bag be tied around the branch? (a) with sharp wire (b) as tight as possible (c) with a hot glue gun (d) gently, not too tight
27. 27.🛟 The water for the yeast should be ___. (a) very salty (b) ice cold (c) boiling hot (d) warm, not hot
28. 28.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: the amount of cream is kept the same. (a) False (b) True
29. 29.🌱 Is salt needed for a seed to sprout? (a) needed to sprout (b) not needed to sprout
30. 30.🧺 Do we need a tray for spills for the fizzy balloon? (a) not needed (b) needed
31. 31.🧺 Do we need sand and pebbles for the muddy water filter? (a) needed (b) not needed
32. 32.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we change it (b) we keep it the same (c) we measure it
33. 33.🍞 Does yeast need sugar to make gas? (a) yeast does not need it (b) yeast needs it
34. 34.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the kind of plant”? (a) we keep it the same (b) we measure it (c) we change it
35. 35.📘 What is yeast? (a) a tiny living fungus (b) a kind of sugar (c) a kind of salt (d) a kind of stone
36. 36.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a comb (b) water (c) white paper strips (d) lemon juice
37. 37.🍋 What colour does the lemon writing turn when an adult warms it? (a) green (b) brown (c) white (d) blue
38. 38.🫧 Is soap solution an acid, a base or neutral? (a) an acid (b) neutral (c) a base
39. 39.True or false: dissolving salt is a change that can be undone. (a) True (b) False
40. 40.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a balloon (b) a jar with a tight lid (c) fresh cream (d) a bowl

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