Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 782 · 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.🧺 Which of these is needed for the yeast balloon? (a) a battery cell (b) dry yeast (c) a paper clip (d) turmeric powder
2. 2.🪴 Through which part does a plant take in water from the soil? (a) the fruits (b) the flowers (c) the leaves (d) the roots
3. 3.True or false: cotton or cloth is needed for the muddy water filter. (a) False (b) True
4. 4.True or false: salt is not needed for a seed to sprout. (a) True (b) False
5. 5.True or false: chaff from wheat grain is done by sieving. (a) True (b) False
6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the number of drops (c) the liquid we test (d) the colour we see
7. 7.🧺 Do we need a balloon for the muddy water filter? (a) needed (b) not needed
8. 8.🧺 Do we need a mirror for the secret lemon message? (a) needed (b) not needed
9. 9.🍋 Which of these steps is a job a child can do? (a) cutting the lemon (b) ironing the paper (c) dipping the cotton bud (d) plugging in the iron
10. 10.🔮 Predict: the adult irons for only one second. What happens? (a) it gets darker (b) the paper floats (c) writing turns green (d) writing stays faint
11. 11.🍋 Which of these steps is a job for an adult? (a) writing the message (b) letting the paper dry (c) reading the message (d) putting the iron away
12. 12.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a battery cell (b) a funnel (c) a clean glass (d) sand and pebbles
13. 13.🫧 Which of these is a base? (a) sugar water (b) lemon juice (c) plain water (d) baking soda water
14. 14.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) melting ice (c) melting butter (d) milk turning to curd
15. 15.🫧 Which of these is neutral? (a) salt water (b) detergent water (c) baking soda water (d) curd
16. 16.🟡 Which of these turns turmeric paper reddish-brown? (a) sugar water (b) soap solution (c) lemon juice (d) vinegar
17. 17.🧺 Which of these is needed for making butter? (a) a balloon (b) a battery cell (c) a mirror (d) a jar with a tight lid
18. 18.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) turmeric powder (b) a piece of string (c) warm water (d) salt
19. 19.🔮 Predict: you leave out the sugar. What happens to the balloon? (a) it turns yellow (b) it grows very little (c) it grows much faster (d) it bursts at once
20. 20.🛟 Which safety rule fits the fizzy balloon experiment? (a) seal it in a glass jar (b) shake it near your face (c) put it in your mouth (d) keep it away from eyes
21. 21.🧺 Which of these is not needed for sprouting seeds? (a) moong seeds (b) a mirror (c) cotton wool (d) water
22. 22.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) bright blue (c) reddish-brown (d) it stays white
23. 23.True or false: take in water from soil is a job of the roots. (a) True (b) False
24. 24.🔮 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
25. 25.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the kind of plant is the one thing we change. (a) True (b) False
26. 26.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: size of the balloon is what we measure. (a) True (b) False
27. 27.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is the one thing we change? (a) the iron setting (b) the same paper (c) the ironing time (d) the kind of juice
28. 28.📘 Is the fizzing a sign that a new substance is made? (a) yes, a new gas forms (b) it is only dissolving (c) it is only melting (d) no, nothing changes
29. 29.🫧 Which gas fills the balloon in the baking soda and vinegar experiment? (a) oxygen (b) hydrogen (c) helium (d) carbon dioxide
30. 30.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: time to make butter is kept the same. (a) False (b) True
31. 31.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: spoons of baking soda is the one thing we change. (a) True (b) False
32. 32.🫧 Is vinegar an acid, a base or neutral? (a) an acid (b) a base (c) neutral
33. 33.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is kept the same? (a) how hard we shake (b) the cream temperature (c) time to make butter
34. 34.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is kept the same? (a) the same paper (b) the kind of juice (c) how dark the writing is
35. 35.True or false: sugar is not needed for the fizzy balloon. (a) True (b) False
36. 36.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of water is kept the same. (a) False (b) True
37. 37.True or false: turmeric powder is not needed for sprouting seeds. (a) False (b) True
38. 38.🍋 Secret message: who does this step — cutting the lemon? (a) an adult does it (b) a child can do it
39. 39.⚖️ 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 glass
40. 40.True or false: husk from rice grain is done by evaporating. (a) True (b) False

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