Flame Tests 12.01.2010 19.01.2010 Introduction The normal electron configuration of atoms or ions of an element is known as the “ground state”. In this most stable energy state‚ all electrons are in the lowest energy levels available. When atoms or ions in the ground state are heated to high temperatures‚ some electrons may absorb enough energy to allow them to “jump” to higher energy levels. The element is then said to be in the “excited state”. This excited configuration is unstable‚
Premium Potassium Atom Photon
Discussion Questions 1. Why do different metals have different characteristic flame test colours? The photons emitted during the test precisely match the quantum energy difference between the excited state and the ground state. For different elements the spacing between the ground state and the higher energy levels is different. So different elements have different flame test colours. 2. Most salts contain a metal and a non-metal. Look at the compounds we tested and determine whether it is
Premium Management Organization Education
Flame Test Lab Your company has been contracted by Julius and Annette Benetti. They are worried about some abandoned‚ rusted barrels of chemicals that their daughter found while playing in the vacant lot behind their home. The barrels have begun to leak a colored liquid that flows through their property before emptying into a local sewer. The Benettis want your company to identify the compound in the liquid. Earlier work indicates that it is a dissolved metal compound. Many metals‚ such as
Premium Color Potassium Metal
Title: Flame Test Aim: To determine the cation in each of the unknown substance X‚ Y and Z by observing the flame colour of different metal compounds. Introduction: A distinctive feature of many s-block metals is their ability to produce flame colours. At temperature of a Bunsen flame‚ a compound will decompose to give gaseous atoms of its constituent elements. When an electron in the gaseous atom absorbs energy from the flame‚ it will move from an orbital with lower energy to
Premium Sodium chloride Flame test Potassium
Mwale | Flame Tests | | | Include the data sheet with this report sheet. 1. An AM radio station broadcasts at a wavelength of 0.500 kilometers. Microwaves can have a wavelength of 12 cm. A fire place can give off photons with a wavelength of 1.5 x 10-3 millimeters and the X-rays used in a dentist’s office have a wavelength of 2.1 x 10-11 meters. Ultraviolet rays‚ the ones that give you sunburn or fade the colors of clothes have a wavelength of about 3.0 x 10-7 meters. From this data
Premium Light Electromagnetic radiation Wavelength
Investigate Flame Colors of Different Cations When they were heated by Fire. & Testing changes of cations using sodium hydroxide (NaOH) aqueous Aims & Objectives Different characteristic cations will form different colors when they are burned or added base. In these two experiments‚ scientist took some sample of barium hydroxide (Ba (OH) 2·H2O)‚ ferric chloride (FeCl3·6H2O)‚ copper chloride (CuCl2· 2H2O)‚ calcium chloride anhydrous (CaCl2)‚ potassium carbonate crystal (K2CO3· 2H2O)‚
Premium Chlorine Chemistry Color
Flame Test Lab Question: When a compound is placed in the flame of a burner‚ what happens to the color of the flame? Hypothesis: When the compound is placed in the flame‚ the flame changes color depending on the chemical compound. When they’re heated‚ they gain energy and changed color sometimes. Safety Requirements for this Lab: Wear goggles at all times. If you want to remove them to write in your notebook you may sit at a table in the center of the room. When you sit down remove them
Premium Chemical element Metal Chemical compound
I. Purpose: To observe the colors produced when compounds are introduced into a flame and the electrons become excited. To estimate the wavelength of light produced‚ then calculate the frequency and energy of the light II. Safety: Standard safety procedures III. Chemical Inventory: |Chemical Name: |Hazards: | |Lithium Chloride
Premium Light Electromagnetic radiation Wavelength
Flame Test Lab Period 2 Due: 10/19/11 Honors Chemistry Purpose/Objective: To observe the colors produced when elements are put into a flame and to prove when electrons jump down from higher layers they release energy in the form of light. Materials: CoCl2 Na2SO4 CaCl2 KCl SrCl2 CuCl2 LiCl Unknown A Unknown B Distilled H2O Q-tips Beaker Bunsen Burner Spectroscope Spot Plate Procedure: 1. Light the Bunsen Burner. 2. Fill a beaker
Premium Energy Color Conservation of energy
Flame Test Lab Introduction/Purpose: When a certain amount of energy is supplied within an atom‚ the electrons of that atom begin to move up the levels of electron configuration. This level of energy is called a quantum. The object of this experiment was to examine the movement of electrons up and down energy levels through the use of given elemental substances. With heat supplying a large amount of energy‚ the properties of the elements caused them to give off a certain color or tone of
Premium Chemistry Photon Atom