Report 4: Preparation and Properties of Hydrogen and Oxygen 1. Generation and Collection of Hydrogen Gas (o). Observation on adding acid to zinc 2. Tests on the Hydrogen Gas (2) Test on igniting hydrogen/air mixture to ood etood arhappena hat obser b) Test on igniting pure hydrogen ard wry (c) Attempt to ignite hydrogen after inverting bottle (d) Explain your observations from parts a-c. (F) Generation and Collection of Oxygen Gas what t why (a) Observation on adding hydrogen peroxide to yeast E) 4th boHe 4. Tests on the Oxygen Gas (a) Result of attempting to ignite oxygen (b) Result of inserting glowing splint into the second bottle of oxygen

Arrange these substance according to how many drops we could add to a penny before the "bubble" popped, FEW DROPS (left-most) to MANY DROPS (right-most). The description labels on the images are small, so use the following legend to identify the materials: A: vegetable oil B: motor oil C: dish soap D: syrup E: honey A CITE EVIDENCE from your Learning Experience and provide REASONING for why you arranged these substances in this order.

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What do you think are the chemical reactions involved in breathalyzer test administered to potentially drunk drivers? Provide the reactants and products of the reaction and explain what observations would indicate if the person was drunk

Predict the major product of the following reaction. LOH 长管 O ofre ofile B. HO que ő

In your own words, describe why metals are such good conductors of electricity. Be sure to include the definition of metallic bond in your answer. Answer in 2 to 3 complete sentences. I !!! H Normal A Enter your answer here BIUS √x 20 Tx

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Rank the elements or compounds in the table below in decreasing order of their boiling points. That is, choose 1 next to the substance with the highest boiling point, choose 2 next to the substance with the next highest boiling point, and so on.