Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 740 · 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 tie a bag on a branch with no leaves. Will it collect much water? (a) exactly the same (b) much more water (c) much less water (d) it fills with soil
2. 2.🧺 Do we need a clear plastic bag for the leafy bag test? (a) needed (b) not needed
3. 3.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “size of the balloon”? (a) we change it (b) we keep it the same (c) we measure it
4. 4.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is kept the same. (a) False (b) True
5. 5.🌱 Which of these sprouts in a few days? (a) seeds on wet cotton (b) seeds in the freezer (c) boiled seeds (d) seeds on dry cotton
6. 6.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) in a busy doorway (c) safe from small children (d) next to the baby
7. 7.True or false: baking a cake is a change that can be undone. (a) True (b) False
8. 8.True or false: lemon juice turns turmeric reddish-brown. (a) False (b) True
9. 9.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is kept the same. (a) False (b) True
10. 10.⚖️ 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 colour we see (d) the liquid we test
11. 11.🛟 Which safety rule fits the fizzy balloon experiment? (a) shake it near your face (b) seal it in a glass jar (c) keep it away from eyes (d) put it in your mouth
12. 12.🔮 Predict: you write with plain water instead of lemon juice. What appears after ironing? (a) dark brown words (b) almost nothing (c) a rainbow (d) blue words
13. 13.🧺 Do we need a mirror for the muddy water filter? (a) not needed (b) needed
14. 14.🔮 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
15. 15.🧈 What is the watery liquid left after the butter forms? (a) buttermilk (b) vinegar (c) honey (d) oil
16. 16.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) cotton wool (b) water (c) a few days (d) a battery cell
17. 17.🛟 Why is a plastic jar a good choice for shaking? (a) it is hotter (b) it will not break (c) it is magnetic (d) it is heavier
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we keep it the same (c) we change it
19. 19.🧺 Do we need vinegar for the fizzy balloon? (a) not needed (b) needed
20. 20.True or false: hold the plant in soil is a job of the roots. (a) False (b) True
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) False (b) True
22. 22.🔮 Predict: you use more vinegar and more baking soda. What happens to the balloon? (a) it shrinks (b) there is no change (c) it turns blue (d) it grows bigger
23. 23.🍞 Does yeast need time to make gas? (a) yeast does not need it (b) yeast needs it
24. 24.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) lemon juice (b) a small bowl (c) white paper (d) turmeric powder
25. 25.True or false: soap solution is needed for the turmeric test. (a) False (b) True
26. 26.🔮 Predict: you leave out the sugar. What happens to the balloon? (a) it turns yellow (b) it bursts at once (c) it grows much faster (d) it grows very little
27. 27.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a battery cell (b) warm water (c) a shallow dish (d) a spoon
28. 28.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “spoons of baking soda”? (a) we keep it the same (b) we change it (c) we measure it
29. 29.True or false: salt is not needed for growing salt crystals. (a) True (b) False
30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we change it (c) we keep it the same
31. 31.🌱 Why do the seeds on dry cotton not sprout? (a) they are too wet (b) they have no soil (c) they have no water (d) they have no salt
32. 32.🫧 Is baking soda water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
33. 33.True or false: sugar is something yeast does not need. (a) True (b) False
34. 34.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) fresh cream (b) a magnet (c) a jar with a tight lid (d) a bowl
35. 35.True or false: sawdust dissolves in water. (a) False (b) True
36. 36.🫧 Is detergent water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
37. 37.🍋 Which of these steps is a job for an adult? (a) reading the message (b) writing the message (c) putting the iron away (d) letting the paper dry
38. 38.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is the one thing we change? (a) the amount of cream (b) how hard we shake (c) time to make butter (d) the cream temperature
39. 39.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a small bottle (b) dry yeast (c) a battery cell (d) warm water
40. 40.🍋 Secret message: who does this step — plugging in the iron? (a) an adult does it (b) a child can do it

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