Lab Chemistry Lab Experiment

6-3: This process is used by cells to manufacture _biochemical energy from nutrients into adenosine triphosphate (ATP), and then release waste products__

Procedure: Using distilled water, premeasured containers and objects determine displacement of fluids and density of objects. Use ice and heat measure temperatures in Celsius, Fahrenheit and Kelvin.

Our objective for the Sherlock Holmes Experiment was to illustrate that some chemicals can be identified or differentiated by simple chemical tests, such as solubility, pH, or color tests. In our group we had to test come common powders such as Alka-Seltzer, baking soda, flour, Vitamin C (ascorbic acid), and salt. Other chemicals that were used to do this experiment were vinegar, and Iodine 2 Solution. The equipment used to do this experiment was red litmus paper, and 5 test tubes per group.

In reference to the analysis of anions, Table 1 shows that a precipitate was formed when our unknown was combined with HNO3 and AgNO3, thus indicating the presence of a chloride ion. Because our unknown did not form a precipitate due to HCl and BaCl2, separate, effervesce, or smell, we concluded that neither sulfate, nitrate, carbonate nor

The purpose of this lab is to test substances and to determine the physical and chemical properties of substances.

In a chemistry stockroom, a vial of an Unknown White Compound was found. In order to properly dispose of the substance, the substance has to be identified .The possible compounds has been limited to one of 15 different compounds. Also, approximately 5 grams of the Unknown White Compound (UWC) were available for testing. In order to determine the properties of the compound, a series of tests was conducted. These tests included a ph test, a conductivity test, a flame test, a sulfate test, a halide test, an ammonium test, a solubility test, and a carbonate test. Using the results of these experiments, it was hypothesized that the UWC is potassium chloride. To further confirm the hypothesis, a synthesis of potassium chloride was conducted.

The proof (twice the % alcohol) starts at its maximum and goes down (as the alcohol evaporates). If we start with a high concentration of alcohol, we will get the azeotrope (95% alcohol, 5% water) for a while, then the concentration will decrease.

Day 1. Michael was coming home for vacation from college. When he got home he found out that

3.6.1. BAP (Benzyl amino purine) stock solution (2mg/ml): 20mg of BAP being weighed and dissolved completely in 1N NaOH to a final total volume of 10 ml with autoclaved double distilled water to obtain a stock concentration of 2mg/ml was prepared and stored in clean autoclaved vials at -4°C.

Eleven mystery test tubes labeled from K-1 to K-11 contained: 6M H2SO4, 6M NH3, 6M HCl, 6M NaOH, 1M NaCl, 1M Fe(NO3)3, 1M NiSO4, 1M AgNO3, 1M KSCN, 1M Ba(NO3)2, 1M Cu(NO3)2 respectively. The contents of the test tubes were determined by chemical experiments. Solution K-1 contained NiSO4 because when solution K-9, ammonia which was identified by its pungent odor, was added, an inky dark blue color was made. Iron (Fe (NO3)3) was determined to be in test tube K-2. KSCN was found in test tube K-11 since Fe (NO3)3 and KSCN makes a bloody color when mixed together. Flame tests were conducted in which K-8

1. Place a small amount of wax from a birthday candle into a test tube. Heat gently over a burner flame until the wax melts completely; then allow

The luminous yellow flame is smoky because no air is entering the burner and hydrocarbon is converted into carbon dioxide

The Effect of pH on Reaction Times INTRODUCTION Ever since scientists discovered the importance of the water molecule in everyday life on earth, it has been understood that all chemical reactions occur at different rates when compared to each other. A chemical reaction is the reaction between two or more molecules when they are either mixed with each other or put in close proximity of each other. Two types of chemical reactions are exothermic and endothermic; exothermic chemical reactions release heat as a by-product of the reaction into the area around it, on the other hand endothermic chemical reactions absorb heat during the reaction and make the area around it cooler.

Fundamental of Science (Assignment 1) Measuring Quantities for Chemical Reactions P1 1. The atom is mainly made up of two specific regions : the positively charged nucleus made up of protons and neutrons, and the shells (orbitals) in which electrons are present, were they orbit around the positively charged nucleus to create a neutral atom. The Atoms are thus made up of three subatomic particles: The proton, neutrons and electrons. The protons are positively charged while the electrons are negatively charged, and the neutrons are neutral.

In this laboratory the objectives were to understand the effects that temperature has on a reaction, be able to calculate the reaction’s rate constant, and to calculate the activations energy from the recorded rate constant. Activation energy is the minimal amount of energy that is necessary to result in a chemical reaction. With an insufficient amount of energy, a reaction won’t occur, too much and it will react just fine. A great example of this can be lighting a match. The friction created when striking the tip covered in Potassium Chlorate against the match pad is enough energy for it to ignite.