Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 95 · 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: a battery cell is needed for the leafy bag test. (a) False (b) True
2. 2.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we keep it the same (b) we measure it (c) we change it
3. 3.True or false: melting ice is a change that can be undone. (a) True (b) False
4. 4.⚖️ Fair test — do seeds need water to sprout? True or false: how many seeds sprout is kept the same. (a) True (b) False
5. 5.True or false: cotton wool is not needed for sprouting seeds. (a) False (b) True
6. 6.⚖️ 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) True (b) False
7. 7.⚖️ 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) sun or shade (c) the time we wait (d) the size of the plant
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
9. 9.True or false: cotton or cloth is not needed for the muddy water filter. (a) True (b) False
10. 10.🍋 Secret message: who does this step — ironing the paper? (a) an adult does it (b) a child can do it
11. 11.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it sinks to the bottom (b) it dissolves (c) it turns to sand (d) it floats on top
12. 12.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) fresh cream (b) a magnet (c) a timer (d) a bowl
13. 13.🫧 Which of these is an acid? (a) soap solution (b) plain water (c) tamarind water (d) sugar water
14. 14.🌱 Seeds need water, air and ___ to sprout. (a) sugar (b) soil (c) salt (d) warmth
15. 15.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) neutral (c) an acid
16. 16.🔮 Predict: you use more vinegar and more baking soda. What happens to the balloon? (a) it turns blue (b) it shrinks (c) it grows bigger (d) there is no change
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) False (b) True
18. 18.🔍 Which is the odd one out? (a) ironing the paper (b) putting the iron away (c) cutting the lemon (d) writing the message
19. 19.🌱 Which of these is needed for a seed to sprout? (a) salt (b) soil (c) warmth (d) sugar
20. 20.⚖️ 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
21. 21.🧈 Can this change be undone: cooking an egg? (a) cannot be undone (b) can be undone
22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the number of drops (b) the light we look in (c) the liquid we test (d) the turmeric paper
23. 23.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) mix bathroom cleaners (c) sip each liquid (d) use only kitchen items
24. 24.🍋 Which of these steps is a job a child can do? (a) putting the iron away (b) reading the message (c) cutting the lemon (d) ironing the paper
25. 25.🫧 Is tamarind water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
26. 26.True or false: a magnet is something yeast needs. (a) True (b) False
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we keep it the same (b) we measure it (c) we change it
28. 28.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) white paper strips (c) a balloon (d) a dropper or spoon
29. 29.⚖️ 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 same dish (b) sunny or shady place (c) days to see crystals
30. 30.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it flowers more (b) it wilts and droops (c) it grows faster (d) it turns blue
31. 31.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) muddy water (c) cotton or cloth (d) a battery cell
32. 32.🔍 Which is the odd one out? (a) dipping the cotton bud (b) reading the message (c) writing the message (d) ironing the paper
33. 33.🧺 Which of these is needed for the turmeric test? (a) turmeric powder (b) yeast (c) a battery cell (d) a mirror
34. 34.🫗 How do we separate chaff from wheat grain? (a) handpicking (b) sieving (c) evaporating (d) winnowing
35. 35.True or false: soap solution is an acid. (a) True (b) False
36. 36.🪴 Which part of a plant does this job: give out water vapour? (a) roots (b) stem (c) leaves (d) flower
37. 37.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: the same jar is the one thing we change. (a) False (b) True
38. 38.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
39. 39.True or false: sugar is not needed for the yeast balloon. (a) True (b) False
40. 40.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of yeast is the one thing we change. (a) True (b) False

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