Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 701 · 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 — 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
2. 2.True or false: a magnet is not needed for making butter. (a) False (b) True
3. 3.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the size of the plant”? (a) we change it (b) we measure it (c) we keep it the same
4. 4.🌱 Is air needed for a seed to sprout? (a) needed to sprout (b) not needed to sprout
5. 5.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) it turns to oil (c) sugar crystals form (d) it turns to butter
6. 6.True or false: a balloon is not needed for the secret lemon message. (a) False (b) True
7. 7.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “sun or shade”? (a) we change it (b) we keep it the same (c) we measure it
8. 8.🔍 Which is the odd one out? (a) reading the message (b) writing the message (c) putting the iron away (d) dipping the cotton bud
9. 9.🧺 Which of these is not needed for the secret lemon message? (a) an adult with an iron (b) a cotton bud (c) turmeric powder (d) white paper
10. 10.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
11. 11.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the amount of yeast”? (a) we keep it the same (b) we measure it (c) we change it
12. 12.🛟 Why must a plastic bag never go over anyone’s head? (a) it gets wet (b) it is too big (c) it changes colour (d) it can block breathing
13. 13.🧺 Which of these is not needed for making butter? (a) a magnet (b) a timer (c) a jar with a tight lid (d) cold water to rinse
14. 14.True or false: a few hours is not needed for the leafy bag test. (a) True (b) False
15. 15.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the same bottles is what we measure. (a) False (b) True
16. 16.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a comb (c) water (d) white paper strips
17. 17.🧈 What is the watery liquid left after the butter forms? (a) oil (b) vinegar (c) buttermilk (d) honey
18. 18.🔍 Which is the odd one out? (a) melting ice (b) folding paper (c) dissolving salt (d) rusting iron
19. 19.🛟 The water for the yeast should be ___. (a) ice cold (b) boiling hot (c) warm, not hot (d) very salty
20. 20.🔍 Which is the odd one out? (a) salt water (b) lemon juice (c) plain water (d) sugar water
21. 21.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the amount of water”? (a) we keep it the same (b) we change it (c) we measure it
22. 22.True or false: detergent water is neutral. (a) False (b) True
23. 23.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) clearer (c) salty (d) hot
24. 24.True or false: vinegar is needed for the leafy bag test. (a) True (b) False
25. 25.🍞 Does yeast need sugar to make gas? (a) yeast does not need it (b) yeast needs it
26. 26.True or false: sugar is not needed for the yeast balloon. (a) True (b) False
27. 27.⚖️ 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
28. 28.True or false: bad grains from rice is done by evaporating. (a) True (b) False
29. 29.True or false: water is needed for the turmeric test. (a) True (b) False
30. 30.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the same kind of bag”? (a) we measure it (b) we change it (c) we keep it the same
31. 31.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is kept the same? (a) the iron setting (b) the kind of juice (c) how dark the writing is
32. 32.⚖️ Fair test — do seeds need water to sprout? True or false: the number of seeds is kept the same. (a) True (b) False
33. 33.True or false: a balloon is needed for making butter. (a) True (b) False
34. 34.True or false: dissolving salt is a change that cannot be undone. (a) True (b) False
35. 35.True or false: a jar with a tight lid is not needed for making butter. (a) True (b) False
36. 36.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your school uniform (c) an old shirt or apron (d) your best clothes
37. 37.🔍 Which is the odd one out? (a) small pebbles (b) cooking oil (c) sugar (d) sawdust
38. 38.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a battery cell (b) a clear plastic bag (c) a potted plant (d) a rubber band
39. 39.🧺 Which of these is needed for the yeast balloon? (a) turmeric powder (b) a mirror (c) a battery cell (d) warm water
40. 40.🛟 Why must children keep their fingers away from the iron? (a) it can burn skin (b) it is magnetic (c) it is sticky (d) it is cold

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