Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 558 · 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 — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a shallow dish (c) a balloon (d) a piece of string
3. 3.🛟 Why is a plastic jar a good choice for shaking? (a) it is magnetic (b) it will not break (c) it is hotter (d) it is heavier
4. 4.🧺 Which of these is needed for the fizzy balloon? (a) a mirror (b) a magnet (c) a comb (d) vinegar
5. 5.🫧 Is lemon juice an acid, a base or neutral? (a) an acid (b) neutral (c) a base
6. 6.True or false: a magnet is needed for the leafy bag test. (a) False (b) True
7. 7.🧺 Do we need a spoon for growing salt crystals? (a) not needed (b) needed
8. 8.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) a clean glass (c) a battery cell (d) yeast
9. 9.🌱 Which of these is not needed for a seed to sprout? (a) air (b) water (c) sugar (d) warmth
10. 10.📘 What is yeast? (a) a kind of salt (b) a tiny living fungus (c) a kind of sugar (d) a kind of stone
11. 11.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the same bottle is the one thing we change. (a) False (b) True
12. 12.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of yeast is what we measure. (a) False (b) True
13. 13.🔍 Which is the odd one out? (a) freezing water (b) melting butter (c) folding paper (d) milk turning to curd
14. 14.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) safe from small children (c) in a busy doorway (d) on the edge of a table
15. 15.🍋 Which of these steps is a job for an adult? (a) letting the paper dry (b) writing the message (c) putting the iron away (d) dipping the cotton bud
16. 16.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) vinegar (b) a balloon (c) a battery cell (d) baking soda
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) False (b) True
18. 18.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) salt (c) a balloon (d) warm water
19. 19.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
20. 20.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is the one thing we change. (a) True (b) False
21. 21.True or false: plugging in the iron is a job for an adult. (a) False (b) True
22. 22.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is what we measure? (a) size of the balloon (b) the amount of yeast (c) the water temperature (d) the amount of sugar
23. 23.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
24. 24.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it turns sweet (b) crystals grow faster (c) few or no crystals (d) it fizzes
25. 25.🧺 Which of these is needed for the yeast balloon? (a) sugar (b) turmeric powder (c) a mirror (d) a paper clip
26. 26.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) a clean glass (c) muddy water (d) turmeric powder
27. 27.⚖️ 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
28. 28.🛟 The water for the yeast should be ___. (a) ice cold (b) boiling hot (c) very salty (d) warm, not hot
29. 29.⚖️ 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) the same kind of bag (b) the time we wait (c) the kind of plant (d) sun or shade
30. 30.🧺 Do we need a battery cell for making butter? (a) not needed (b) needed
31. 31.🔮 Predict: the jar is filled right to the top with cream. What happens? (a) it is much faster (b) it makes salt (c) it takes much longer (d) it turns pink
32. 32.True or false: take in water from soil is a job of the roots. (a) False (b) True
33. 33.🔍 Which is the odd one out? (a) plain water (b) baking soda water (c) soap solution (d) detergent water
34. 34.🔮 Predict: which gives more drops in the bag — a hot sunny day or a cool cloudy day? (a) neither of them (b) the cool cloudy day (c) the hot sunny day (d) both the same
35. 35.🫗 Which of these is done by sieving? (a) chaff from wheat grain (b) tea leaves from tea (c) bran from wheat flour (d) sugar from sugar water
36. 36.⚖️ Fair test — do seeds need water to sprout? Which of these is the one thing we change? (a) the same bowls (b) how many seeds sprout (c) the same place (d) wet or dry cotton
37. 37.🟡 Which of these keeps turmeric yellow? (a) salt water (b) soap solution (c) detergent water (d) baking soda water
38. 38.🔮 Predict: seeds on wet cotton are kept in a dark cupboard. Will they sprout? (a) they melt (b) yes, they sprout (c) they turn to stones (d) no, never
39. 39.🧺 Do we need dry yeast for the yeast balloon? (a) not needed (b) needed
40. 40.🔮 Predict: you wait 2 hours instead of 10 minutes. What happens? (a) the balloon is smaller (b) the balloon is bigger (c) it turns to bread (d) it shrinks to nothing

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