Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 567 · 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.🍋 Why can’t you see the lemon writing once it dries? (a) the ink is magnetic (b) dry juice is see-through (c) it turned into air (d) the paper ate it
2. 2.True or false: mud from water is done by filtering. (a) False (b) True
3. 3.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) clear water is salty (c) clear water is sweet (d) germs are invisible
4. 4.🔍 Which is the odd one out? (a) baking soda water (b) tamarind water (c) orange juice (d) vinegar
5. 5.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the same paper”? (a) we change it (b) we measure it (c) we keep it the same
6. 6.🌱 Which of these sprouts in a few days? (a) seeds in the freezer (b) seeds on dry cotton (c) boiled seeds (d) seeds on wet cotton
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the light we look in (b) the number of drops (c) the colour we see (d) the liquid we test
8. 8.🪴 Which of these is a job of the stem? (a) give out water vapour (b) carry water upward (c) hold the plant in soil (d) take in water from soil
9. 9.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a clear plastic bag (b) a rubber band (c) a few hours (d) turmeric powder
10. 10.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) an old shirt or apron (c) your best clothes (d) a white party dress
11. 11.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “time to make butter”? (a) we keep it the same (b) we change it (c) we measure it
12. 12.🧺 Do we need vinegar for the leafy bag test? (a) needed (b) not needed
13. 13.🫧 Is curd an acid, a base or neutral? (a) an acid (b) a base (c) neutral
14. 14.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it turns blue (b) it grows faster (c) it flowers more (d) it wilts and droops
15. 15.🫧 Which gas fills the balloon in the baking soda and vinegar experiment? (a) oxygen (b) carbon dioxide (c) helium (d) hydrogen
16. 16.🔍 Which is the odd one out? (a) sugar water (b) detergent water (c) soap solution (d) baking soda water
17. 17.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is what we measure? (a) amount of water drops (b) the size of the plant (c) the same kind of bag (d) the kind of plant
18. 18.True or false: milk turning to curd is a change that can be undone. (a) True (b) False
19. 19.⚖️ 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 same kind of bag (c) the kind of plant (d) amount of water drops
20. 20.🛟 Why must a plastic bag never go over anyone’s head? (a) it can block breathing (b) it is too big (c) it changes colour (d) it gets wet
21. 21.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
22. 22.🌱 Which of these does not sprout? (a) seeds on wet cotton (b) seeds in the freezer (c) wet seeds by a window (d) wet seeds in the dark
23. 23.True or false: water is not needed for the turmeric test. (a) True (b) False
24. 24.🔍 Which is the odd one out? (a) letting the paper dry (b) putting the iron away (c) plugging in the iron (d) cutting the lemon
25. 25.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) a small bowl (b) white paper (c) turmeric powder (d) a cotton bud
26. 26.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: how hard we shake is kept the same. (a) True (b) False
27. 27.🔍 Which is the odd one out? (a) soil (b) sugar (c) air (d) salt
28. 28.True or false: cotton wool is not needed for sprouting seeds. (a) False (b) True
29. 29.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) a piece of string (c) turmeric powder (d) salt
30. 30.True or false: salt water is a base. (a) True (b) False
31. 31.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) neutral (c) an acid
32. 32.🔍 Which is the odd one out? (a) lemon juice (b) orange juice (c) salt water (d) vinegar
33. 33.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the kind of salt”? (a) we measure it (b) we change it (c) we keep it the same
34. 34.🛟 What should you do if vinegar splashes in your eye? (a) ignore it (b) rinse with clean water (c) add baking soda (d) rub it hard
35. 35.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) sugar water (c) baking soda water (d) soap solution
36. 36.📘 What do we call something that changes colour to show an acid or a base? (a) an indicator (b) a prism (c) a magnet (d) a pulley
37. 37.🧈 Before the butter appears, what does the cream turn into? (a) ice (b) thick whipped cream (c) powder (d) clear water
38. 38.🧺 Which of these is needed for the fizzy balloon? (a) a magnet (b) sugar (c) a mirror (d) a funnel or spoon
39. 39.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: spoons of baking soda is kept the same. (a) False (b) True
40. 40.🔍 Which is the odd one out? (a) time (b) warm water (c) sugar (d) a magnet

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