PPT-Pure Substances

Mixtures Separation of Mixtures Atoms amp Molecules Matter Pure Substances Mixtures amp 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. Grade 7. Matter. is anything that has mass and takes up space. Mass is the amount of matter in an object. . A. Solid . is matter that has a definite shape and volume. A . liquid. is matter that does not have a definite shape, but has a definite volume. Anything that has mass and occupies space.. There are two types of matter:. Pure substances. Mixtures. Pure Substance. A single kind of matter that is pure and has a specific set of properties.. Pure Substances vs. Mixtures. Divisions of Matter. Pure Substance. Cannot be broken down and retain its properties.. Has a fixed composition.. Every sample of a pure substance has EXACTLY the same composition AND exactly the same characteristics - homogeneous. II. Composition of Matter. (. p.246-250). Matter Flowchart. Pure Substances. Mixtures. MATTER. A. Matter Flowchart. MATTER. Can it be separated by physical means?. Homogeneous Mixture. (solution). Heterogeneous Mixture. 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?. Objectives. PSc.2.1.1. . Classify matter as: homogeneous or heterogeneous; pure substance or mixture; element or compound; metals, nonmetals or metalloids; solution, colloid or suspension.. . Shoe Classification Activity. th. Grade Science. What are “Substances”? . Substances can be identified as either…. Elements. Compounds. Mixtures. So, what is a substance?. A substance cannot be further broken down or . p. urified by physical means.. UEQ: How does the structure of matter influence its physical and chemical behavior?. LEQ: How is matter classified?. Bell Work 09/19/2012. Write question and answer.. Can you chemically break down an atom? Why or why not? . 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 Purity, formulations and chromatography. Chromatography. Can be used to separate mixtures and help. identify substances.. Involves a mobile phase. (e.g. water or ethanol) and a stationary phase (e.g. chromatography paper). . Keywords. :. DATE. Learning Objectives. Recognise the difference between materials, substances and . elements . Identify . elements by their names and . symbols. Explain . what is meant by a chemically pure substance. 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 .