the diagnosis and classification of mental disorders. I just recently got certified as a Substance Abuse Counselor‚ so my focus will be on changes on the criteria for substance use and abuse. In the new DSM-5‚ the revised chapter of “Substance-Related and Addictive Disorders” includes substantive changes to the disorders grouped there plus changes to the criteria of certain conditions. Substance use disorder in DSM-5 combines the DSM-IV categories of
Premium Addiction Diagnostic and Statistical Manual of Mental Disorders Drug addiction
point of both pure substances and five mixtures of different ratios. The purpose of the second section was to identify an unknown sample by measuring its melting point and mixing it with two known substances and comparing them. The results suggest that the eutectic point is closest to the weight % ratio of 10/90 naphthalene to biphenyl and the unknown sample is acetamide. Introduction: One way to establish the purity of a substance is to measure its melting point. A pure substance will have a sharp
Free Chemical substance Mixture Mix
opportunity to investigate the physical and chemical properties of pure chemical substances and analyze the experiment results. Procedure: In the beginning of the experiment‚ I filled two 24-well plates half way with the given chemicals and sucked up these chemicals into their labeled pipets for later use. Following this‚ I performed a number of steps on each of the four test tubes and recorded observations of the different substances including odor‚ color‚ reaction to heat‚ the effects on the red and blue
Free Chemistry Chemical substance Chemical reaction
Chemistry •Matter • • • States Properties Classification Chemistry is the study of the composition‚ properties and structure of matter. it is considered “the central science”; blending at one extreme into physics‚ mathematics‚ engineering and sometimes into earth and life Chemistry Is the study of the matter‚ its classification‚ composition‚ properties and structure; the changes it undergoes‚ the energy transformation that goes with the change‚ and the laws and principles governing such changes
Premium Energy Chemical substance Chemistry
Educational and Counselling Psychology and Special Education‚ University of British Columbia‚ Vancouver‚ Canada School of Population and Public Health‚ University of British Columbia‚ Vancouver‚ Canada Abstract: Introduction: Alcohol (AUD) and other substance use disorders (SUD) are common among adolescents. The CRAFFT (Car‚ Relax‚ Alone‚ Forget‚ Friends‚ Trouble‚ 1999) was developed as a brief screening instrument for adolescents to measure AUD and SUD. This systematic review examines the psychometric
Premium Drug addiction Alcoholism Substance abuse
molecular level when a substance melts; to understand the primary purpose of melting point data; to demonstrate the technique for obtaining the melting point of an organic substance; and to explain the effect of impurities on the melting point of a substance. Through the experimentation of three substances‚ tetracosane‚ 1-tetradecanol and a mixture of the two‚ observations can be made in reference to melting point concerning polarity‚ molecular weight and purity of the substance. When comparing the
Premium Chemistry Molecule Temperature
A reaction is a chemical process in which substances decomposes‚ or combines with other substances. In this case it is synthesis chemical process which creates new products. However‚ the rate of a reaction can be altered either faster or slower depending on certain variables. These variables are concentration‚ temperature‚ surface area‚ and catalysts. A reaction can be made faster or slower with a variation in the concentration of reactants; a reaction goes faster when there is an increase in concentration
Premium Chemical reaction Chemistry Reaction rate
chloride and calcium carbonate then calculate the percentage by mass of each component recovered from the mixture. The other purpose of this experiment was to show us the students the concepts associated with physical and chemical properties of substances. Me and my lab partner‚ obtained a mixture of a un known proportion from the instructor and then flow the guide line in our lab manual to separate the mixture by applying the separation method motioned in our lab manual pages 33-40 . In this
Premium Chemical substance Mixture Chemistry
mixtures were collected and tested by different individuals in the lab in order to find the eutectic point of biphenyl. Unknown substances were then tested using the mixture melting point method in order to determine their identities. INTRODUCTION The melting point of a solid is the temperature where the substance changes from a solid to a liquid state. Using known substances and determining their melting points is a way to establish the purity of and to identify a sample. This lab demonstrates the
Premium Chemical substance Mix Temperature
6-4-2013 A pure substance or chemical substance is a material that is homogeneous. It has consistent properties throughout the sample.” Pure substances can be described by both physical and chemical properties”. Physical properties can include‚ color‚ odor‚ melting point‚ boiling point‚ and solubility in various solvents‚ etc. The observation of these physical properties does not involve any chemical change in the substance‚ it is still the same. Meaning it is still the same pure substance it was before
Premium Chemical reaction Chemistry Color