A chemical reaction is a process that involves rearrangement of the molecular or ionic structure of a substance. In chemistry, there are five different types of chemical reactions: single replacement, double replacement, synthesis, decomposition, and combustion. The first chemical reaction type is a synthesis reaction. A synthesis reaction is when two or more reactants all “synthesize” or join together to form a new product (Kotz, 2017). Another chemical reaction type is decomposition reaction. A decomposition reaction occurs two reactants break down into two or more simpler compounds or elements. (Study.com, 2018). The third chemical reaction type is a combustion reaction. Combustion reactions occur when a hydrocarbon reacts with an oxygen …show more content…
When the copper metal and oxygen gas were combined together with heat, the copper metal turned the color black. This reaction formed copper (II) oxide, and is categorized as a synthesis chemical reaction because the oxygen in the oxygen gas was combining with the copper metal. The balanced chemical equation for this reaction is 2Cu(s) + O2(g) → 2CuO(s). In experiment three, the reactants were methane and oxygen gases. When the two gases were combined with a spark, fire was created. This reaction produced carbon dioxide and water vapor, and is also categorized as a combustion reaction since oxygen is being added to the methane gas. The balanced chemical equation for this reaction is CH4(g) + 2O2(g) → CO2(g) + 2H2O(g). In experiment four, the reactant was hydrogen peroxide. When the hydrogen peroxide was added to the dish soap and potassium iodide mixture, the beaker was instantaneously filled with foam, turned the color yellow, released heat, and enhanced the fragrance of the dish soap. This reaction produced water vapor and oxygen gas and is categorized as a decomposition reaction. The balanced chemical equation for this reaction is 2H2O2(aq) → 2H2O(g) + …show more content…
When the two reactants were mixed together, a double replacement reaction occurred because the potassium from the potassium iodide and the lead in lead (II) nitrate switched places. The reaction caused the liquid solution to become a vibrant yellow and a powdery precipitate to form at the bottom of the test tube. Products formed from the reaction are potassium nitrate and a lead (II) iodide precipitate. The balanced chemical equation for this reaction is 2KI(aq) + Pb(NO3)2(aq) → PbI2(ppt) + 2KNO3(aq). In experiment ten, claer sodium hydroxide and blue copper (II) nitrate were the reactants. When the two reactants combined together in a test tube, the solution immediately became foggy and a precipitate formed at the bottom of the test tube. Also, a double replacement reaction occurred when the two reactants were combined because the sodium in sodium hydroxide and copper from copper (II) nitrate switched places: forming sodium nitrate and copper (II) hydroxide precipitate. The balanced chemical equation for this reaction is 2NaOH + Cu(No3)2 → Cu(OH)2(aq) +