Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 346 · 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.True or false: detergent water is an acid. (a) False (b) True
2. 2.🔮 Predict: you leave out the sugar. What happens to the balloon? (a) it grows very little (b) it grows much faster (c) it bursts at once (d) it turns yellow
3. 3.🪴 Which part of a plant does this job: make seeds? (a) stem (b) flower (c) leaves (d) roots
4. 4.True or false: a mirror is not needed for making butter. (a) True (b) False
5. 5.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
6. 6.🛟 Why must the jar lid be screwed on tightly? (a) so it gets hot (b) so it turns yellow (c) so cream does not spill (d) so air gets out
7. 7.🪴 Which of these is a job of the stem? (a) carry water upward (b) hold the plant in soil (c) make food in sunlight (d) make seeds
8. 8.🔮 Predict: you use plain water instead of vinegar. What happens? (a) the balloon bursts (b) a huge eruption (c) very little fizzing (d) it turns to honey
9. 9.🧺 Which of these is not needed for the leafy bag test? (a) a clear plastic bag (b) a potted plant (c) a magnet (d) a rubber band
10. 10.True or false: a comb is needed for the fizzy balloon. (a) False (b) True
11. 11.🧺 Do we need lemon juice for the secret lemon message? (a) not needed (b) needed
12. 12.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a balloon (b) salt (c) a shallow dish (d) a spoon
13. 13.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a few days (b) turmeric powder (c) moong seeds (d) water
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) lemon juice (b) soap solution (c) detergent water (d) baking soda water
16. 16.🪴 Which of these is a job of the flower? (a) make seeds (b) give out water vapour (c) take in water from soil (d) carry water upward
17. 17.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it grows faster (b) it flowers more (c) it turns blue (d) it wilts and droops
18. 18.🛟 What should you do after touching soil or seeds? (a) lick your fingers (b) skip washing (c) rub your eyes (d) wash your hands
19. 19.🧺 Do we need a magnet for growing salt crystals? (a) not needed (b) needed
20. 20.True or false: a battery cell is not needed for the secret lemon message. (a) False (b) True
21. 21.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is the one thing we change? (a) the kind of salt (b) the amount of water (c) sunny or shady place (d) days to see crystals
22. 22.🔮 Predict: seeds on wet cotton are kept in a dark cupboard. Will they sprout? (a) yes, they sprout (b) no, never (c) they turn to stones (d) they melt
23. 23.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) clear water is sweet (c) clear water is salty (d) germs are invisible
24. 24.🧺 Do we need moong seeds for sprouting seeds? (a) not needed (b) needed
25. 25.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it disappears (b) it turns blue (c) it turns yellow again (d) it turns darker red
26. 26.⚖️ 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
27. 27.True or false: warmth is needed for a seed to sprout. (a) False (b) True
28. 28.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a magnet (b) a few days (c) cotton wool (d) water
29. 29.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: size of the balloon is what we measure. (a) False (b) True
30. 30.True or false: seeds in the freezer sprouts in a few days. (a) True (b) False
31. 31.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the salt (b) nothing (c) the water (d) the mud
32. 32.True or false: a magnet is something yeast needs. (a) False (b) True
33. 33.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sniff each bottle hard (c) sip each liquid (d) use only kitchen items
34. 34.🍋 Which of these steps is a job a child can do? (a) putting the iron away (b) cutting the lemon (c) ironing the paper (d) reading the message
35. 35.True or false: a clear plastic bag is needed for the leafy bag test. (a) False (b) True
36. 36.⚖️ 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 keep it the same (b) we change it (c) we measure it
37. 37.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of water is the one thing we change. (a) False (b) True
38. 38.🫧 Which of these is neutral? (a) soap solution (b) lemon juice (c) salt water (d) detergent water
39. 39.🔍 Which is the odd one out? (a) sugar (b) sand (c) food colour (d) baking soda
40. 40.🧺 Do we need a mirror for the fizzy balloon? (a) not needed (b) needed

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