Chemistry 108/lab Section C2A Fall 2014 Amee Karelia Date of experiment: 9/16/2014 Date of submission: 9/23/2014 Experiment # 3 Purpose: the purpose of this experiment was to explore the distinctions between physical and chemical properties and between physical and chemical changes. Lab questions: 1. Based on my observation CaCl2 is soluble in water. 2. When 15% of HCl was added to CaCl2 as the teacher was performing the experiment I observed and realized some changes took place physically
Premium Carbon dioxide Calcium
University of San Carlos - Department of Chemical Engineering Chapter 1 An Introduction to Chemical Processing Products of Chemical Engineering University of San Carlos - Department of Chemical Engineering What is a Chemical Engineer? CHAPTER 1 University of San Carlos - Department of Chemical Engineering A Chemical Engineer is a… UNIVERSAL ENGINEER … breadth of scientific and technical knowledge … extremely versatile and able to handle a wide range of technical
Premium Chemical engineering Chemical industry
Digestion of lipid does not occur in the mouth and stomach because enzymes that would aid the digestion are not present there. The major organ for the digestion of lipids in the small intestine because the pancreas is the primary source of lipid-digesting enzymes (lipase). For the body to digest the fat molecules in the food‚ a process must occur‚ and it is called “Emulsification (ability to mix with water).” This is
Premium Heart Blood Cardiology
Introduction The reaction rate of a chemical reaction is determined as the change in the concentration of a reactant or product over the change in time. [1] The rate of a reaction is determined by experiment. Many factors influence the rate of a reaction: the nature of the reaction‚ concentration‚ pressure‚ temperature‚ and surface area‚ presence of catalyst and intensity of light. [2] For a chemical reaction‚ the rate law or rate equation is a mathematical expressed equation that links the reaction
Premium Chemical reaction Reaction rate Chemical kinetics
roles that contribute to this sandwich being turned into chemical energy. Be sure to include mechanical and chemical mechanisms‚ along with how they are metabolized in the body! Digestion is the chemical breakdown of food molecules into smaller molecules that can be used by various cells within the body. The breakdown is initiated when food is ingested in the mouth and specific enzymes are exposed to components within the food molecules. Digestion begins in the mouth with mastication‚ or chewing‚ performed
Premium Nutrition Food Hamburger
Chemical equilibrium is the point at which the concentrations of reactants and products do not change with time. It would appear as if the reaction has stopped‚ but in fact‚ the rates of the forward and reverse reactions are equal‚ causing the reactants and products to be created at the same rate. This can be expressed mathematically in the form of the equilibrium constant. The following is the general equation for a reversible chemical reaction: aA+bB →cC+dD
Premium Chemical reaction Chemistry Reaction rate
Lab Report 1/28/13 Observations of Chemical Changes Page. 14 Objectives: The objectives of this experiment are: 1. To observe some properties of chemical reactions 2. to associate chemical properties with household products Background Information: Chemical changes are often accompanied by physical changes. Three that you should not see in this lab are changes in temperature‚ presence of a flame‚ and evolution of light‚ as when as firefly glows. Three physical changes that indicate a
Premium Chemical reaction Chemistry
LABORATORY REPORT Activity: Effect of Dietary Fiber on Transit Time and Bile Name: Hope Schallert Instructor: Dr. Weithop Date: 03.08.2015 Predictions Dietary fiber will: increase transit time Dietary fiber will increase the amount of bile acid in solution Materials and Methods Effect of Dietary Fiber on Transit Time 1. Dependent variable. number of radiopaque markers in GI tract 2. Independent variable. amount and type of fiber in meal 3. Controlled variables. calories in meal‚ nutrients
Premium Dietary fiber Cholesterol Constipation
In this lab‚ we were given three experiments. We had to go through steps and make observations for each‚ but in the end we had to decide whether the experiment had a chemical or physical change. A physical change can alter the state of matter‚ but not the substances identity. A chemical change transforms a substance from one identity to another. It is important to identify the difference between physical and chemical changes in any lab because you want to know the process of what is going on. The
Premium
Lab Report 2 Observations of Chemical Changes Objectives: (1 of 20 points) The objectives of this experiment are: 1. To observe some properties of chemical reactions 2. To associate chemical properties with household products Background Information: (2 of 20 points) Chemical changes are often accompanied by physical changes. Three that you should not see in this lab are changes in temperature‚ presence of a flame‚ and evolution of light‚ as when as firefly glows. Three physical changes that
Premium Chemical reaction Chemistry