Lab #1: Melting Points of Organic Compounds Report Form May 15‚ 2014 1. A “Melting Point Range” refers to the range of temperature at which a solid melts into its liquid state. 2. Pure compounds have narrow or ‘sharp’ melting point ranges‚ 1°C or less if the compound is very pure. A less pure compound exhibits a broader melting point range‚ between 3°C to 10°C as well as a depressed or lower range. 3. Crushing the sample allows for greater surface area-to-volume ratio of the powder‚ this
Premium Temperature Thermodynamics Heat
You can separate solutions into two categories‚ colligative properties and non-Colligative properties. Colligative properties are different from non-colligative properties because they focus on the dissolved particles‚ not the solute itself. Non-colligative properties depend on the specification of the dissolved particles and the solvent. Colligative properties are properties that depend on the dissolved solutes in the solution. There are four main colligative properties; vapor pressure‚ freezing
Premium Water Solubility Chemistry
Experiment :12 Vapor Pressure and the Heat of Vaporization Nicole Petersen TA: Ryan Dixon 4/16/2013 Purpose: Use experimental techniques to record temperature and volume data for known and unknown compounds. The liquid and gas are going to be at equilibrium. We will also determine the boiling point for the known and unknown. Then use a graph to calculate the slope and then use Clasius- Clapeyron equation to find the heat vaporization. Procedure: Refer to pages 155-167 of Chemistry 1210 General
Premium Gas Temperature Water
How are crystals grown? You have created a supersaturated solution by first heating a saturated sugar solution and then allowing it to cool. A supersaturated solution is unstable; it contains more solute than can stay in a liquid form‚ so the sugar (the solute) will come out of solution. Then evaporation occurs as time passes‚ the water will evaporate slowly from the solution. As the water evaporates‚ the solution becomes more saturated and sugar molecules will continue to
Premium Solid Chemistry Crystal
filtration) Organic layer Unknown (By Evaporation) Procedure and Observation: 0.30093 g of panacetin was weighed and mixed well with 50 ml of dichloromethane. After stirring the solution thoroughly‚ some solid is formed (solid sucrose) and liquid. With using a preweighed filter paper to filter the mixture‚ and after the sucrose had dried‚ it was weighed out to 0.7756g. For the aqueous layer‚ adding 10ml of 6M HCl(pH 2) and filtered using vacuum filtration and after cooled in the ice bath.
Premium Liquid Temperature Solid
naturally occurring element that is found in air‚ water and soil. It exists in several forms: elemental or metallic mercury‚ inorganic mercury compounds‚ and organic mercury compounds. It is a shiny metal‚ silver-white color‚ volatile and odorless liquid metal. The exposure to mercury can affect and harm human health‚ environmental and wildlife. How is mercury released into the environment? Mercury can be released into the environment through leaks and spills of the medical devices like thermometers
Premium Mercury Chemical element Water
thermometer and placed in a Thiele tube filled with oil. The tube was heated by a Bunsen burner at approximately 1 °C per minute. Melting point temperatures were recorded at the first indication of fluid and then when the sample had turned completely liquid. Two trials were completed on each sample ². The melting point of 10% naphthalene / 90% Biphenyl mixture was determined by electronic instrumentation. Two samples were prepared and placed in closed end capillary tubes and then inserted into
Premium Liquid Temperature Solid
all the way throughout the body (thickness) of the tile. Because of this scratches are less noticeable in this type of tiles. They are formed with the paint mixture pre-added while making the body. * Nano polished Vitrified Tiles : a layer of liquid silica on vitrified tiles then which fills the micro (nano) pores on the tiles surface and makes it smoother in feel. * Glazed Vitrified Tiles(GVT) : vitrified tiles with glazed surface; it is called Glazed Vitrified Tiles (GVT). Main advantage
Premium Temperature Grout Glass
the transmission fluid level. At this point check all the exterior lights to see if they need to be replaced. Turn the engine off‚ and check the oil level to see how low it is if at all. Take this opportunity to check the air filter for dirt and liquid. Typically check the air filter every two to three oil changes. It is a good idea to note brake fluid‚ power steering fluid and washer fluids levels before moving underneath the car to drain it. Having checked all the fluids and minor
Premium Air filter Liquid Automobile
Institution: Medgar Evers College - CUNY Course: Public Speaking/Speech Date: February 15‚ 2014 How To Make A Lava Lamp I. INTRODUCTION A. Attention Getter: Have you ever caught yourself being hypnotized by a lava lamp? How the liquid separates and form different shapes and colors. Excited at the thought of owning one‚ but then you look at the price tag - and put it back. B. Purpose Statement: Today I will show you how to make a lava lamp using common household items. C. Preview
Free Alka-Seltzer Liquid