Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 588 · 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.🌱 Seeds need water, air and ___ to sprout. (a) sugar (b) salt (c) soil (d) warmth
2. 2.🔮 Predict: you write with plain water instead of lemon juice. What appears after ironing? (a) dark brown words (b) almost nothing (c) blue words (d) a rainbow
3. 3.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the amount of yeast”? (a) we keep it the same (b) we measure it (c) we change it
4. 4.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) white paper strips (c) lemon juice (d) yeast
5. 5.🫧 Which of these is neutral? (a) lemon juice (b) baking soda water (c) soap solution (d) plain water
6. 6.True or false: freezing water is a change that can be undone. (a) False (b) True
7. 7.🪴 Which part of a plant does this job: make food in sunlight? (a) flower (b) stem (c) roots (d) leaves
8. 8.True or false: detergent water is neutral. (a) True (b) False
9. 9.🧺 Do we need a mirror for the leafy bag test? (a) needed (b) not needed
10. 10.⚖️ 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) sun or shade (b) the kind of plant (c) the size of the plant (d) the same kind of bag
11. 11.🧺 Do we need turmeric powder for the secret lemon message? (a) not needed (b) needed
12. 12.True or false: a balloon is needed for sprouting seeds. (a) False (b) True
13. 13.🧺 Do we need a battery cell for the secret lemon message? (a) needed (b) not needed
14. 14.True or false: salt water is neutral. (a) True (b) False
15. 15.True or false: a mirror is not needed for sprouting seeds. (a) False (b) True
16. 16.📘 What do we call a seed starting to grow? (a) pollination (b) condensation (c) evaporation (d) germination
17. 17.🛟 Why must a plastic bag never go over anyone’s head? (a) it can block breathing (b) it is too big (c) it gets wet (d) it changes colour
18. 18.True or false: sunlight is something yeast does not need. (a) False (b) True
19. 19.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) wash hands afterwards (c) nothing is needed (d) lick your fingers
20. 20.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) muddier (c) hot (d) clearer
21. 21.🫗 Which of these is done by evaporating? (a) bran from wheat flour (b) sugar from sugar water (c) mud from water (d) chaff from wheat grain
22. 22.🔍 Which is the odd one out? (a) water (b) sunlight (c) soil (d) sugar
23. 23.⚖️ 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
24. 24.True or false: a shallow dish is not needed for growing salt crystals. (a) False (b) True
25. 25.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the size of the plant”? (a) we change it (b) we measure it (c) we keep it the same
26. 26.🍞 Does yeast need salt to make gas? (a) yeast does not need it (b) yeast needs it
27. 27.🔍 Which is the odd one out? (a) dipping the cotton bud (b) plugging in the iron (c) writing the message (d) reading the message
28. 28.🧺 Do we need a battery cell for making butter? (a) not needed (b) needed
29. 29.🫧 Is orange juice an acid, a base or neutral? (a) neutral (b) a base (c) an acid
30. 30.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: the cream temperature is the one thing we change. (a) True (b) False
31. 31.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is the one thing we change. (a) True (b) False
32. 32.🔍 Which is the odd one out? (a) plugging in the iron (b) ironing the paper (c) dipping the cotton bud (d) cutting the lemon
33. 33.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) germs are invisible (c) clear water is sweet (d) clear water is hot
34. 34.True or false: yeast is not needed for the secret lemon message. (a) True (b) False
35. 35.True or false: a battery cell is not needed for sprouting seeds. (a) True (b) False
36. 36.🧈 Can this change be undone: folding paper? (a) can be undone (b) cannot be undone
37. 37.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) a base (c) an acid
38. 38.⚖️ Fair test — do seeds need water to sprout? Which of these is what we measure? (a) the same bowls (b) the kind of seeds (c) wet or dry cotton (d) how many seeds sprout
39. 39.🛟 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
40. 40.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a balloon (c) a spoon (d) a shallow dish

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