Lab questions 
Observations: Part I: Reaction between iron and oxygen Appearance of steel wool after 20 minutes From (relatively) shiny metal strips to notsoshiny strips that are stained with dark, reddishbrown stuff. Part II: Decomposition of hydrogen peroxide Appearance of potato and hydrogen peroxide combination: Lots of white, foamy bubbles around the potato slices. Day 2 Observations: Part III: Reaction between zinc and acetic acid Appearance of penny in vinegar after 30 minutes: Pretty dark coloured. Quite hard to see
Lincoln’s head or the Memorial. Part IV: Reaction between baking soda and vinegar Description of what happened when the baking soda and vinegar were combined Immediately began foaming up and overflowing from the bowl. I also made a ziploc bag explode too. Questions and conclusions: Part I: Reaction between iron and oxygen 1.Write a balanced equation for the reaction between iron and oxygen. 4Fe + 3O2 —> 2Fe2O3 2.Classify the reaction that occurred between the iron and oxygen. Apply this reaction to a realworld situation. It’s oxidation. Oxygen oxidizes from Fe to Fe3+. As for a realworld situation, well, rusting is a realworld application. Part II: Decomposition of hydrogen peroxide 1.Write the balanced equation for the breakdown of hydrogen peroxide.
2H2O2 —> 2H2O + O2 2.Write a balanced equation for another decomposition reaction. Decomposition for copper carbonate: CuCO3 → CuO + CO2 Part III: Reaction between zinc and acetic acid 1.Write the balanced equation for the reaction between zinc and acetic acid. Zn(s) + 2CH3COOH(aq) —> Zn(OOCCH3)2(aq) + H2(g) 2.Classify the reaction between zinc and acetic acid and explain, in general terms, what happens during this type of reaction. The reaction that’s happening is a oxidationreduction chemical reaction, also known as a singledisplacement reaction. It’s when an element or an...
Lincoln’s head or the Memorial. Part IV: Reaction between baking soda and vinegar Description of what happened when the baking soda and vinegar were combined Immediately began foaming up and overflowing from the bowl. I also made a ziploc bag explode too. Questions and conclusions: Part I: Reaction between iron and oxygen 1.Write a balanced equation for the reaction between iron and oxygen. 4Fe + 3O2 —> 2Fe2O3 2.Classify the reaction that occurred between the iron and oxygen. Apply this reaction to a realworld situation. It’s oxidation. Oxygen oxidizes from Fe to Fe3+. As for a realworld situation, well, rusting is a realworld application. Part II: Decomposition of hydrogen peroxide 1.Write the balanced equation for the breakdown of hydrogen peroxide.
2H2O2 —> 2H2O + O2 2.Write a balanced equation for another decomposition reaction. Decomposition for copper carbonate: CuCO3 → CuO + CO2 Part III: Reaction between zinc and acetic acid 1.Write the balanced equation for the reaction between zinc and acetic acid. Zn(s) + 2CH3COOH(aq) —> Zn(OOCCH3)2(aq) + H2(g) 2.Classify the reaction between zinc and acetic acid and explain, in general terms, what happens during this type of reaction. The reaction that’s happening is a oxidationreduction chemical reaction, also known as a singledisplacement reaction. It’s when an element or an...