PPT-AQA Chemical analysis Pure substances

Purity formulations and chromatography Chromatography Can be used to separate mixtures and help identify substances Involves a mobile phase eg water or ethanol and a stationary phase eg chromatography paper . Mrs. . aRusso. 8-1. Matter . Anything that has mass and takes up space.. It is the ‘stuff’ that makes up everything in the universe.. Properties of Matter. Hardness, texture, shape, temperature, flammability. Elements, Compounds, and Mixtures. Elements. pure substance that cannot be separated into simpler substances by physical or chemical means. . Compounds. Pure substance composed of two or more . different elements joined by chemical bonds.. By Ms. Renfro. The two categories of matter. Pure Substances. Are . chemically. the same throughout. Mixtures. Substances that are . not chemically combined. Pure substances. Pure substances include:. Elements, Compounds, and Mixtures. Elements. pure substance that cannot be separated into simpler substances by physical or chemical means. . Compounds. Pure substance composed of two or more . different elements joined by chemical bonds.. Mixtures. Separation. of Mixtures. Atoms & Molecules. Matter. Pure Substances. Mixtures & Solutions. Compounds. E. lements. Heterogeneous. Homogeneous. Pure Substances. Definition:. A substance that cannot be separated by a physical or mechanical process, (by hand or with a tool).. Pure substances cannot be broken down by physical means.. Pure substances . contain . only one kind of molecule.. Molecules are small groups of atoms that make up matter. Example: Water is a molecule of two hydrogen atoms, and one oxygen atom. How can matter be classified?. Atoms . are the smallest unit of an element that maintains the properties of that element.. The most basic ingredients to . all . matter. Atoms can be combined in three majors ways:. Clear your desk except for the Catalyst sheet. Write today’s date (09/08/10) next to Wednesday. When the bell rings, answer the Catalyst questions. Catalyst. (3 Minutes). How many picoseconds are in a second?. Inventory . Notification Overview (INO). Disclaimer: This . document is provided by IAEG for informational purposes only, and IAEG makes no representations or warranties about this document or its contents. Determination of whether and/or how to use all or any portion of this document is to be made in your sole and absolute discretion. No part of this document constitutes legal advice. Prior to using this document, you should review it, along with applicable laws and regulations, with your own legal counsel. Use of this document is voluntary.. mATTER Anything that has mass and volume (takes up space) Exists usually as a solid, liquid or gas (the fourth state is plasma) Characteristics (Properties) of Matter Matter has many characteristics (properties) that can be observed: Elements, Compounds, Mixtures All matter is made of atoms. Atoms are the smallest unit of an element that maintain the properties of that element. All matter can be classified as… Elements Elements are made of only one type of atom Particularly Hazardous SubstancesPHSs IdentificationThe OSHA Laboratory Standard29 CFR 19101450 defines a Particularly HazardousSubstancePHS as a select carcinogenreproductive toxinor a substance with The key words are emphasized in bold . and there is a list of them at the end of the presentation. . Chemical Reactions. When a chemical reaction occurs, new substances (called . products. ) form from the substances taking part in the reaction (called . In everyday life a pure substance is one which has had nothing added to it, like milk.. An impure substance would be one with other things added, like chocolate milk. In chemistry:. A pure substance consists of a .