Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 727 · 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.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) it turns to butter (c) sugar crystals form (d) it turns to oil
2. 2.True or false: a battery cell is not needed for the yeast balloon. (a) True (b) False
3. 3.🧺 Do we need a seed for the fizzy balloon? (a) needed (b) not needed
4. 4.🔍 Which is the odd one out? (a) sugar (b) a magnet (c) sunlight (d) vinegar
5. 5.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is kept the same. (a) True (b) False
6. 6.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) a white party dress (c) your best clothes (d) an old shirt or apron
7. 7.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is what we measure? (a) the amount of sugar (b) the amount of yeast (c) size of the balloon (d) the same bottles
8. 8.True or false: chaff from wheat grain is done by winnowing. (a) True (b) False
9. 9.True or false: time is something yeast needs. (a) False (b) True
10. 10.🍞 Which of these is something yeast needs? (a) vinegar (b) a magnet (c) sunlight (d) sugar
11. 11.🍋 Why does the lemon writing turn brown with heat? (a) the iron is brown (b) the juice scorches first (c) heat adds colour (d) paper turns lemony
12. 12.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is the one thing we change. (a) True (b) False
13. 13.🧺 Do we need a few hours for the leafy bag test? (a) not needed (b) needed
14. 14.🫗 Which of these is done by evaporating? (a) tea leaves from tea (b) chaff from wheat grain (c) bad grains from rice (d) salt from sea water
15. 15.🔍 Which is the odd one out? (a) dipping the cotton bud (b) letting the paper dry (c) reading the message (d) plugging in the iron
16. 16.⚖️ 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
17. 17.🧺 Do we need a battery cell for the leafy bag test? (a) needed (b) not needed
18. 18.True or false: a funnel is not needed for the muddy water filter. (a) True (b) False
19. 19.🌱 Which of these is not needed for a seed to sprout? (a) air (b) sunlight (c) warmth (d) water
20. 20.🧺 Do we need a balloon for the yeast balloon? (a) not needed (b) needed
21. 21.🔍 What do you see inside the plastic bag after a few hours in the sun? (a) tiny water drops (b) salt crystals (c) nothing at all (d) tiny insects
22. 22.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we keep it the same (b) we change it (c) we measure it
23. 23.🌱 Will these sprout: wet seeds in the dark? (a) sprouts (b) does not sprout
24. 24.🧺 Do we need turmeric powder for making butter? (a) needed (b) not needed
25. 25.🟡 Why does soap solution change turmeric’s colour? (a) soap is hot (b) soap is magnetic (c) soap water is a base (d) soap is an acid
26. 26.📘 What do we call a solution that cannot dissolve any more salt? (a) frozen (b) magnetic (c) empty (d) saturated
27. 27.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the size of the plant is the one thing we change. (a) False (b) True
28. 28.🧈 Why does shaking cream make butter? (a) shaking adds salt (b) the lid is warm (c) the jar adds butter (d) fat bits stick together
29. 29.🛟 Why is a plastic jar a good choice for shaking? (a) it is magnetic (b) it is hotter (c) it is heavier (d) it will not break
30. 30.🧺 Which of these is not needed for the leafy bag test? (a) a potted plant (b) sunlight (c) yeast (d) a few hours
31. 31.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) clear water is sweet (c) clear water is hot (d) germs are invisible
32. 32.True or false: salt from sea water is done by evaporating. (a) False (b) True
33. 33.🔮 Predict: you tie a bag on a branch with no leaves. Will it collect much water? (a) much less water (b) much more water (c) exactly the same (d) it fills with soil
34. 34.🪴 Where did the water inside the bag come from? (a) the rubber band (b) the plastic (c) the leaves (d) the rain
35. 35.True or false: a mirror is needed for the leafy bag test. (a) False (b) True
36. 36.🌱 Which of these does not sprout? (a) seeds on wet cotton (b) wet seeds by a window (c) wet seeds in the dark (d) boiled seeds
37. 37.⚖️ Fair test — do seeds need water to sprout? Which of these is kept the same? (a) how many seeds sprout (b) the number of seeds (c) wet or dry cotton
38. 38.True or false: warmth is not needed for a seed to sprout. (a) False (b) True
39. 39.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) fresh cream (b) a timer (c) a jar with a tight lid (d) a magnet
40. 40.🍋 Secret message: who does this step — putting the iron away? (a) an adult does it (b) a child can do it

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