Purpose: To investigate the difference between physical and chemical changes in matter. Materials: Safety glasses 13 small test tubes Test tube rack Test tube holder 2 100-mL beakers Funnel Watch glass Stirring rod Evaporating dish Magnet Magnifying glass Crucible tongs Spatula Balance Meeker burner Ring stand Iron ring Wire gauze Forceps Sulfur Iron filings Sodium Bicarbonate Sodium Chloride Sugar Sand Magnesium ribbon Hydrochloric Acid Distilled water Filter paper
Premium Chlorine Water Hydrochloric acid
Physical and Chemical Reactions Lab #4 Alesa Cannon Objective: To investigate the physical and chemical properties of a pure chemical substance. Procedure: 1. Half-fill one well of a 24-well plate with 6 M HCl and half-fill a second well of the 24-well plate with 6 M NaOH. Suck up these chemicals into their labeled pipets for later use. 2. Perform the following steps on each of the substances to be tested. Complete all tests of one substance and record your observations before proceeding
Premium Chemistry Chemical reaction Hydrogen
30: 62-70. Igboko‚ D. O. (1983). Phytochemical studies on Garcinia kola Heckel. MSc Thesis. University of Nigeria Nsukka. pp: 202. Ijeh‚ I.‚ Nwugo‚ V. O.‚ and Obidoa‚ O. (1996). Comparative studies on the nutritive‚ phytochemical and antimicrobial properties of two varieties of Vernonia amygdalina. Plant Pros Res Comm. 1: 71-75. Kerr‚ J. H.‚ and Barrett‚ T. L. (2009). Atypical Mycobacterial Diseases‚ Military Dermatology Textbook‚ p. 401 Long‚ J McCann et al. (2009). "Secreted and Exported Proteins
Premium Tuberculosis
Stazi Belvin Chemical and Physical Lab Changes Lab Report 9/5/2014 I. Purpose- The overall purpose of the lab is to identify chemical and physical changes. II. Safety- To work with the chemicals used in the lab‚ it is required to wear safety goggles to protect your eyes from the fumes when working with the chemicals. It is also required to be cautious when working with the acids used in this lab because they can cause burning and irritation of the skin. Also‚ be cautious as to not inhale the
Premium Chemistry Hydrochloric acid
Chemical Changes VS Physical Changes Lab Report (Full Name) 3rd period Purpose: To observe the difference between chemical and physical changes. Materials: * * Hot plate * Water * Salt * Evaporating dish * Candle * Matches * Ammonium hydroxide * Watch glass * Phenolphthalein * Paper towel * Cornstarch * Iodine * Cup * Alka-Seltzer tablet * Pipet * Milk * Vinegar * Copper II sulfate * Lead II nitrate Safety:
Premium Temperature Thermodynamics Chemistry
PHYSICAL INVENTORY OBSERVATION CHECKLIST Name of Company Subsidiary or Division Location or Department Date(s) of Inventory Taking Date(s) of Observation Firm’s Representative(s) Company representative in charge of inventory (or department) The purposes of the physical inventory observation are to determine that (1) the inventory physically exists‚ (2) stated quantities fairly represent the actual quantities on hand at the date of the observation
Premium Count Inventory Cycle count
The chemical designation is 3-[2-[4-(6-fluoro-1‚ 2-benzisoxazol- 3- yl)-1-piperidinyl] ethyl]-6‚7‚8‚9-tetrahydro- 2-methyl-4H-pyrido [1‚2-a]pyrimidin- 4-one. Its molecular formula is C23H27FN4O2 and its molecular weight is 410.49 (Salwan et al. 2013) Risperidone
Premium Schizophrenia Major depressive disorder Dopamine
Physical Properties of Organic Molecules Abstract Identifying the physical properties of compounds can be useful in several ways. It helps us to determine the structure of certain compounds‚ the purity of substances and if a substance is not pure we can figure out how to separate contaminating substances from a compound. In this experiment‚ I learned how to determine a solid’s melting point and why some melting point ranges may be broader than others.
Premium Solvent Chemistry Temperature
Identifying Physical and Chemical Changes Nelson Science Perspectives 10 section 5.2 Amazing Student September 17‚ 2012 Mrs. Volkmann SNC 2D Purpose: To collect evidence and then use it to identify physical and chemical changes. Hypothesis: I predict the following: Change 1 will be a chemical change Change 2 will be a chemical change Change 3 will be a physical change Change 4 will be a chemical change Change 5 will be a chemical change Change 6 will be a physical change Materials:
Premium Hydrogen Chlorine Gas
Michelle Felton Observation of Chemical Changes June 17‚ 2014 Chem 107 Purpose: To associate chemical properties with household products To observe some properties of chemical reactions Procedure: Using a 96 well plate and a pipette each chemical was placed into its individual well‚ two drops of a second chemical were added and the observations of the reaction/changes were recorded. The new mixture was viewed on a light and on a dark background to observe all changes. Data
Premium Chemistry Chemical reaction Chlorine