Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 684 · 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 lemon juice or orange juice make darker secret writing? True or false: the ironing time is kept the same. (a) False (b) True
2. 2.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) turmeric powder (c) warm water (d) salt
3. 3.🌱 Where does a sprouting seed get its first food from? (a) the cotton wool (b) the sunlight only (c) the air (d) food stored in the seed
4. 4.🍋 Which of these steps is a job a child can do? (a) ironing the paper (b) writing the message (c) plugging in the iron (d) cutting the lemon
5. 5.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the filter material (b) the same muddy water (c) the same glass (d) how clear the water is
6. 6.🧺 Which of these is needed for the secret lemon message? (a) lemon juice (b) yeast (c) turmeric powder (d) a battery cell
7. 7.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) white paper (b) lemon juice (c) a cotton bud (d) a balloon
8. 8.🔍 Which is the odd one out? (a) reading the message (b) writing the message (c) plugging in the iron (d) dipping the cotton bud
9. 9.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a rubber band (b) a clear plastic bag (c) a few hours (d) vinegar
10. 10.⚖️ 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
11. 11.🟡 Why does soap solution change turmeric’s colour? (a) soap is hot (b) soap water is a base (c) soap is magnetic (d) soap is an acid
12. 12.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) clearer (c) muddier (d) hot
13. 13.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) use only kitchen items (c) sip each liquid (d) sniff each bottle hard
14. 14.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the filter material (b) how clear the water is (c) the same muddy water
15. 15.🧺 Which of these is needed for the turmeric test? (a) a dropper or spoon (b) yeast (c) a battery cell (d) a mirror
16. 16.True or false: a balloon is not needed for the muddy water filter. (a) False (b) True
17. 17.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a magnet (b) moong seeds (c) a few days (d) water
18. 18.⚖️ Fair test — do seeds need water to sprout? True or false: the same place is kept the same. (a) False (b) True
19. 19.🛟 Why must the jar lid be screwed on tightly? (a) so it turns yellow (b) so air gets out (c) so it gets hot (d) so cream does not spill
20. 20.True or false: vinegar is not needed for the leafy bag test. (a) False (b) True
21. 21.🌱 Will these sprout: wet seeds by a window? (a) sprouts (b) does not sprout
22. 22.🧺 Which of these is needed for the turmeric test? (a) turmeric powder (b) a magnet (c) a comb (d) yeast
23. 23.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the kind of balloon is kept the same. (a) False (b) True
24. 24.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is what we measure. (a) True (b) False
25. 25.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “amount of water drops”? (a) we change it (b) we keep it the same (c) we measure it
26. 26.True or false: sugar is not needed for the yeast balloon. (a) False (b) True
27. 27.🧺 Do we need an adult with an iron for the secret lemon message? (a) needed (b) not needed
28. 28.⚖️ Fair test — do seeds need water to sprout? What do we do with “the number of seeds”? (a) we keep it the same (b) we measure it (c) we change it
29. 29.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is the one thing we change. (a) False (b) True
30. 30.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: how dark the writing is is what we measure. (a) True (b) False
31. 31.🪴 Which of these is a job of the leaves? (a) give out water vapour (b) take in water from soil (c) hold up the leaves (d) make seeds
32. 32.True or false: a magnet is not needed for sprouting seeds. (a) True (b) False
33. 33.🫗 Why does filtered muddy water look clearer? (a) the filter traps mud (b) the mud dissolves (c) the filter adds soap (d) the water evaporates
34. 34.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is what we measure. (a) True (b) False
35. 35.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the kind of juice is kept the same. (a) False (b) True
36. 36.🪴 Which part of a plant does this job: take in water from soil? (a) roots (b) flower (c) stem (d) leaves
37. 37.🛟 How should the plastic bag be tied around the branch? (a) as tight as possible (b) with sharp wire (c) with a hot glue gun (d) gently, not too tight
38. 38.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) tamarind water (d) baking soda water
39. 39.🔍 Which is the odd one out? (a) ironing the paper (b) cutting the lemon (c) putting the iron away (d) letting the paper dry
40. 40.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) the kind of salt (b) days to see crystals (c) sunny or shady place

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids