Reactions in Our World Lab Report Instructions: In this laboratory activity, you will be comparing chemical reactions to nuclear reactions by observing chemical phenomena in action. To prepare for your observations and data collection, you must complete the pre-lab activity worksheet that goes with this lab. Otherwise, you will not have the chemical equations you need to match each chemical reaction. Fill in each section of this lab report and submit it to your instructor for grading. Title: Comparison between chemical reactions and nuclear reactions Objective(s): To compare and contrast chemical and nuclear reactions. Hypothesis: Will the reactions of nuclear and chemical be similar? You will complete your hypotheses using the chart below …show more content…
Magnesium metal and hydrochloric acid will yield a single displacement reaction Electrolysis of water I predict the Electrolysis of water reaction will yield a decomposition reaction Burning magnesium I predict the reaction of Burning magnesium will yield a combustion reaction Procedures: Access the virtual lab and complete all sections of the experiments. A summary of steps has been provided for you. List and explain your controlled variables, independent variable, and dependent variable for this lab. Materials: Reactions in our World Virtual Lab Variables: List your controlled variables, independent variable, and dependent variable for each experiment in the chart below. Remember, controlled variables are factors that remain the same throughout the experiment. An independent (test) variable changes so that the experimenter can see the effect on other variables. The dependent (outcome) variable will change in response to the test …show more content…
Based on the products made, my predictions of chemical reaction type were correct. The reaction between lead (II) nitrate and potassium iodide can also be categorized as a redox reaction. The reaction between magnesium metal and hydrochloric acid can also be categorized as a neutralization reaction. The investigation can be explored further by varying the concentration of reactants, the temperature, and the mass of the reactants. Additionally, the effect of catalysts on the reaction rate could be
This experiment investigated the properties of metals by seeing the reactivity of metals. The metals used in this experiment were lithium, sodium, potassium, magnesium, and calcium. What was the first chemical change observed in the lab? Explain.
Chemical Reactions and Identifications of Unknowns Data Analysis Name: _Gloria Smith_________________________________________ Please answer the following questions with complete sentences unless a fill in the blank is given. Your answers must be typed. Do not plagiarize! Identification Tests: Flame tests are used to identify the __metal ions_ of a compound. Litmus paper is used to identify acids and bases.
Repeat steps 1-10 for two more trials. Conclusion: 1. I chose to compare temperature and amount of reactants in my experiments. I chose these because I thought they would reveal the the most drastic time differences. I also chose these factors because I had prior knowledge of them before I even started chemistry.
This demonstrated our ability to both create a solution, and correctly interpret the task at hand. In the second lab, Introduction to General Chemistry, An Experimental Tour, we were asked to accurately record data,
Double Replacement Lab Report Date Completed: October 8, 2015 Objective To analyze and determine if a chemical reaction occurred between two compounds using the concepts we learned in class. Also, if the chemical reaction occurred, to determine if it formed a precipitate or gas. Safety General Safety Precautions: Do not touch the chemicals Use of gloves and coats are recommended, use of goggles should be required Keep the work area clean Dispose of the chemicals properly, DO NOT dispose them in the sink Clean up your work station Wash your hand before and after the lab Make sure all chemicals are labeled correctly NEVER return chemicals to reagent bottles Use the wafting technique to smell the chemical Clean up spills immediately
1. Introduction The objective of the experiments was to determine the identity of an unknown compound in order to properly dispose it. The process of disposal is very important when dealing with chemicals. Some chemicals are very
ST Report In the experiment, the problem was the contaminants that were affecting the quality of the water samples. To fix this issue, three scientists had to determine the contaminants that were present in the samples. One sample was from the school sink and the second sample was from an unknown source. The scientists conducted many tests to figure out what pollutants were present in the water.
This variable is manipulated by the experimenter. The variable that will be affected by the independent variable is called the dependent variable. This variable is how we measure the outcome. In a experiment, there are two groups: the experimental group and
Since the achievement of nuclear fission, society has been seeking the next step. The successful splitting of an atom was not enough. The scientist set out to get to the next step, but ran into multiple problems. Fusion, the process of combining atoms, required an enormous amount of power. As of now, deuterium and tritium, isotopes of hydrogen, were used, because they were considered the most achievable because the amount of energy needed to sustain a reaction was minimal compared to that of other elements.
Introduction: The purpose of this experiment is to demonstrate the different types of chemical reactions, those including Copper. There are different types of chemical reactions. A double displacement reaction is a chemical process involving the exchange of bonds between two reacting chemical species. A a decomposition reaction is the separation of a chemical compound into elements or simpler compounds and the single-displacement reaction is a type of
There are still many more important differences between the two that we need to discuss. (ii)Differences One of the major differences between the two reactions is that fission does not
VARIABLES: There are independent variables, dependent variables, and controls. the one that is being tested and the one that is the inconsistent variable in the Independent variable like the volume and surface area of the agar cubes. The variable that is kept consistent is the dependent variable such as the percentage of diffusion of pigment in the agar cubes. The constant variable is the features of the experiment that is kept the same throughout the entire experiment such as, the amount of time the agar cubes are left in the beaker and the amount of acid in the beaker.
The materials and methods used in this experiment are as written from the Laboratory Supplement of David L. Shultz. To properly prepare for the experiment, the materials needed were one stoppered shell vial or small Erlenmeyer flask for flies, seventy flesh flies (Sarcophaga bullata, ice-cold to anesthetize them), one wire test-tube rack (small mesh), a few paper towels to cut the flies on, one razor blade, one enamel pan, one thermometer, one grease pencil, one piece of plastic wrap, one large plastic beaker filled with crushed ice, seven large glass test tubes to hold reagents, homogenate, and centrifuged fractions, seven glass reaction tubes (small size, about three inches tall), and seven plastic pipettes (one milliliter and controls). When all
As soon as the wire was submerged into the solution, the aluminum atoms and the copper (II) ions underwent a reduction-oxidation (redox) reaction, meaning aluminum was oxidized and donated its electrons to the copper ions, which were reduced. As a result, solid copper began to form on the surface of the aluminum wire, giving the wire a brown-orange color that resembled rust. The wire had to be regularly shaken in order to remove the solid copper particles and thereby expose more of the aluminum wire to react with the surrounding solution. As the reaction progressed, the liquid copper chloride solution slowly began to lose its color and turn clear. This was a chemical reaction, as seen by the bubbles formed with the wire was added, meaning gas was released when aluminum was oxidized and copper was reduced, but it also gave rise to physical changes, such as the change in color of the solution from blue-green to rusty orange to clear.
i.e O2 + M → M-O(a) Here M is the Silver metal. Catalyst Used: As I mentioned earlier, Silver metal or a mixture of Molybdenum and Iron oxides can be used as catalysts. There are two main differences between the operation of these two catalysts.