Chemical Reaction Lab Report

Examine a piece of nichrome wire. On the data sheet, record the color and the luster of the metal. Use a forceps to hold the wire in the flame of your burner for about two minutes (recall where the hottest part of the flame is located). Describe the appearance of the wire while held in the hottest part of the flame. Allow the wire to cool and reexamine it. From your observations, determine if there was a physical or a chemical change. Give specific reasons for your conclusions. Save the nichrome wire for step #2.

There are now many classification systems to classify the different types of reactions. These include decomposition, polymerization, chain reactions, substitute reactions, elimination reactions, addition reactions, ionic reactions, and oxidation-reduction reactions.

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.

Neither matter nor energy is created or destroyed in a chemical reaction only changed. This experiment is a decomposition reaction a more complex substance breaks down into its more simple parts. One reactant yields 2 or more products.

A single displacement reaction occurs when an element and a compound react together to produce a new element and compound. Essentially what happens is that one of the elements in the reactant compound will transfer over to the other element to create a new compound, and the element that is left over becomes pure. For example, in the example used in the previous paragraph, Al + Mn(NO3)2  Al(NO3)2 + Mn, Aluminum “displaces” Manganese from Nitrate, forming pure Manganese and Aluminum

A double displacement, or double replacement or double exchange-reactions (also known by several other names), are ones in which the cations of the reactants are reversed in the products. A generic formula for this is AB+CD →AD+CB. (Zumdahl). A specific type of double-displacement reactions is also a precipitation reaction. A precipitation reaction occurs when there is the “formation of a solid when two solutions are mixed” (DeCoste and

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

Chemical reactions make new things by rearranging other things. In a chemical reaction, the main change that occurs relates to the way atoms are bonded to each other, in order to change those connections, bonds must be broken and new bonds be formed.

The next reaction is Combustion reaction, which is defined as a type of reaction where a compound and an oxidant is reacted to produce heat and a new product. A description of the general form is the reaction between Hydrocarbon and Oxygen to create Carbon Dioxide and Water (H2O) ( Anne Helmenstine, Combustion Reaction Definition, 2017).

Single Replacement Reaction is one of the eight reactions. Single Replacement reaction is when one component swaps with another component. An example is Zn(s)+2HCl(aq) -->2nCl2(aq)+H2(g). This example is of hydrochloric acid being added to zinc and the reaction is of it bubbling out.

When scientists are creating new compounds from other substances, chemists say they are synthesizing a new material. A synthesis reaction is a reaction where two or more elements or compounds combine to from one compound. This reaction type fallows this general form

Fire made by wood, photosynthesis, aerobic cellular respiration, anaerobic respiration, and digestion are types of early reactions. Rust coming from your bike, batteries for your electronics, combustion, and soaps and detergents are types of modern day reactions. In a chemical reaction, the molecules of one substance break apart and join together with those of another substance to create a different compound (combination of molecules). Many chemical reactions are non-reversible changes. (factmonster.com) You can't turn a baked cake back into its raw ingredients. Some chemical reactions can be reversed, and re-formed into the original substances. These are reversible changes. Substances are either chemical elements or compounds. A chemical reaction rearranges the atoms of the reactants to create different substances as products. (britannica.com) Burning fuels, smelting iron, making glass and pottery, brewing beer, and making wine and cheese are some examples that chemical reactions that have been known and used for thousands of years. Chemical reactions are everywhere on the earth, on land, in the ocean, in the atmosphere, and in living systems. Physical changes include

Introduction: There are five types of chemical reactions that can occur; synthesis (A+B=C), decomposition(C=A+B), single replacement (A+BC=B+AC), double replacement (AB+CD=AD+CB) , and combustion. A combustion reaction consists of a hydrocarbon plus oxygen gas which yields carbon dioxide and water (CxHx +O2=CO2+H2O). Another characteristic that can distinguish between types of reactions is whether they are endothermic or exothermic. Exothermic is a process that releases heat due to the surroundings being a lower temperature than the object.Endothermic on the other hand, absorbs energy through heat from its surroundings, the object is at a cooler temperature. Some commonly known processes that are endothermic are sublimation and evaporation . Some examples of exothermic

In this section we had to show what the molecules look like before and after chemical reactions. I then had to write how I knew it was a chemical reaction or how I knew it was not a chemical reaction. Electrolysis is a chemical reaction. This is where the real growth happened for me. Not only did I know what happened to atoms and molecules in a chemical reaction, but I could also identify one and say why it was a chemical reaction. A chemical reaction is when one or more substances combine/decompose to create a new substance(s). I was also able to show I knew what reactants and products are. A reactant is a substance that is present before the chemical reaction. It is part of the “old” stuff that will have its atoms rearranged into a new substance. That brings me to product. A product is the new stuff that has formed as a result of the atoms rearranging. Knowledge of all of these terms and concepts helped me get the question

Chemical reactions are simply at least two molecules reacting together to form a new molecule (products). In chemical reactions, bonds are broken and formed. An example of a physical change would be the bumper of my Ford Ranger rusting compared to a physical change which would be water boiling or freezing. For the most part, chemical changes cannot be reversed whereas physical changes can. Examples of chemical reactions in regards to molecular biology include cellular respiration and