Chemical Reaction Lab Report

Purpose: The purpose of this experiment is to observe a variety of chemical reactions and to identify patterns in the conversion of reactants into products.

When mixed, none of the metals seemed to react, as none of them emitted gas by bubbling/fizzing and none changed color. This could have been predicted as Magnesium is towards the top of the activity series, and would not have been replaced by Fe, Cu, or Zn as all those are lower on the activity series. The activity series is a guide which helps predicts chemical reactions, as it lists which metals can replace or be replaced by other metals. Part of the reactivity series is as follows, Na>Mg>Zn>Fe>Sn> Pb>H>Cu>Ag.

Sabrina Torres Mr. Van Ness Chemistry Honors/ Period 6 21 November 2014 Double Replacement Reactions: A Colorful look at Experimentation Background Information There are many different ways to categorize reactions, though there is one specific one that’s used in this lab, double displacement reactions.

The third experiment was a single displacement reaction, as it fit into the AB+C-->AC+B formula. The Al was added with CL, while the CuCl just became Cl. Of courses that wasn’t the equation as it still needs to be balanced of the

A chemical reaction is a process by which atoms of one or more substances are rearranged to form a different substance. Six types of chemical reactions are Synthesis, Combustion, Decomposition, Single Replacement, Double Replacement, and Acid/Bases. Each of these does something different, some combine to make a new product and some break down to make new products. Synthesis reaction is a type of reaction in which multiple reactants combine to form a single product. A description of Synthesis reaction would be taking a mystery element, called “A” and combining it with “B” and the new product would be what you get when you combine those two elements (AB). An experiment you can do to help with your understanding of Synthesis is making slime because you are using multiple reactants(glue, borax, and water) to create a single new product(slime). Two real life examples of Synthesis reaction is water and your lungs. The product of Carbon mixed with Oxygen is CO2, which is found in your lungs. Water is a synthesis reaction because it is a product of Hydrogen and Oxygen (Anne Helmenstine, Synthesis Reactions and Examples, 2017).

The purpose of this lab was to use empirical evidence to determine the type of chemical change and be able to write these changes as balanced reactions. We found that 9 out of 16 reactions yielded precipitates and 1 had a color change (Cu(NO3)2 x KI). To set up this experiment, we combined different solutions in a well plate. 3 drops of Ca(NO3)2, Cu(NO3)2, Ni(NO3)2, and Zn(NO3)2 were put into wells A1 to A4, B1 to B4, C1 to C4, and D1 to D4 respectively. Next, 3 drops of KI, KOH, Na2C2O4, and Na2SO4 were placed in wells A1 through D1, A2-D2, A3-D3, and A4-D4 respectively.

Determine the mole ratio-the ratio of the number of moles of silver to the number of moles of copper. Note: Round the results to the nearest whole number

The chemical reactions that could be used to store energy are Decomposition Reaction (Invisible Ink) and Reversible Decomposition-- Combination Reaction (Dehydration of Blue Vitriol/ Rehydration of Copper (II) Sulfate). 2. The following reaction is exothermic, Heme-O2 +CO  Heme-CO+ O2 .

The first experiment to be conducted was the synthesis/combination reaction, a piece of copper wire and magnesium ribbon is to be heated above the Bunsen burner. Make sure the Bunsen burner is on its medium setting before placing the copper wire above the flame. The copper wire will be held by a crucible tong over the flame of the Bunsen burner; it will take a few minutes in order for the new appearance of the copper wire to become visible. The copper wire was a reddish brown and solid before being heated. After it has been heated, it became slightly bent with a blackish gray color.

One discrepancy that has to be explained would be for Part F(Chemical Reactivity Of Some Representative Elements), question 3 is we failed to obtain a result because time ran out before we could complete the experiment. However, based on my research, the calcium hydroxide salt would be more soluble than the magnesium hydroxide salt because the calcium is more reactive than magnesium. This is because calcium has 20 electrons thus, an electronic configuration of 2.8.8.2. However, magnesium has 12 electrons thus, an electronic configuration of 2.8.2 . In other words, calcium has four electron shells but magnesium has three making it easier for calcium to lose an electron as the distance between the nucleus and the electrons in calcium is further

The purpose of this lab was to find that what chemical change has taken place, identify the type of reaction based on the reactants and products of a reaction, and describe reactions by writing word equations and balanced chemical equations.

Often, as two chemical compounds are mixed, a chemical reaction will occur. This can and does take place in nature, but, more importantly, it can take place in a laboratory. “When an acid and a base are placed together, they react to neutralize the acid and base properties, producing a salt” (Hyper physics, n.d.). For example, when making table salt, sodium hydroxide (the base) is added to hydrochloric acid (the acid). When they are added together they try to balance out one another and create the salty goodness that everyone loves to smother their food with.

There are two types of displacement reactions : One type is called the single displacement reaction, the other is called the double displacement reaction. During a single displacement reaction, an element substitutes another element in a compound, creating a new element and a new compound as products. In most single displacement reactions, either a metal replaces another metal, or a non-metal replaces another non-metal. The more reactive element takes the place of the less reactive element in the compound, otherwise the reaction will not occur. The general chemical equations of single displacement can be: A (metal) + BC → AC + B,

This lab observed the Law of Energy Conservation that all the energy in the reactions was from the reactants breaking and forming new bonds. The Law of Energy Conservation was also observed when the energy lost as heat from the beaker was found in the calorimeter. In the calculations, Hess’ Law was tested and proved with adding the enthalpies of reaction two and three equalling the enthalpy of reaction one. This lab also observed endothermic reactions through neutralization and the forming of salts. Thermal equilibrium was observed temperature stabilizing in the calorimeter with the mixing of hot and cold water. Since the reactions were giving off heat, the enthalpy of the reactions were negative and the reactions are product

A chemical reaction is a process that involves the movement of the molecules in a substance. All chemical reactions involve both reactants and products. Reactants are substances that cause a chemical reaction, and products are substances that are generated in the reaction. The reaction rate for a reactant or product in a particular reaction is defined as how quickly or slowly a reaction takes place. In general, the reactions between covalent compounds are slow. For example rusting of iron. In the same way weathering of rocks takes place in millions of years. An example of a fast reaction rate is in an explosion when the reaction has to happen quickly. In general, the reactions between ionic compounds are fast. This reaction is also called neutralisation reaction. Reaction rates can be altered in four ways these are; The temperature is increased, the concentration of a dissolved reactant is increased, the pressure of a reacting gas is increased, solid reactants are broken into smaller pieces and if a catalyst is used or added. In this investigation it was tested if a chemical reaction would occur faster if the surrounding temperature was hotter.