Unit 1 Matter: Physical and Chemical Properties Agenda: What is matter? Wrap up Chemical and Physical Properties Notes White Board Practice Extensive/ Intensive Notes Extensive/Intensive Experiment Planning Homework: None Goals: I can distinguish physical properties from chemical properties I can plan and conduct an experiment to determine which physical properties can be used to identify unknown substances Essential Questions: What information can we gather about all forms of matter? How are physical properties different from chemical properties? It's called chemistry so why are physical properties studied anyway? Week at a Glance Monday Tuesday Wednesday Thursday Friday Unit 0 Test What is Matter? District Pre- Test Properties Properties Planning What is matter? Matter is defined as anything that has mass and takes up space! 1
What s the matter? Chemists study matter.so what things about matter do we study? Is a description of an object If struck by lighting, the tree could catch FIRE (BURN) The tree is GREEN The tree is TALL 2
Face (shape, expressions) All substances have properties Including people! Example: People can be identified by their Voice Height Finger prints Eye color Hair color Teeth DNA What are properties? Matter has observable and measurable qualities. We can use general properties to identify substances. Two basic types of properties of matter: Physical properties and Chemical properties: 3
Physical Properties Are determined by the use of the five senses. They are a description of an object. Examples of Physical Properties Color Smell Taste Hardness State of Matter Boiling, Freezing, or Melting Point 4
Examples of Physical Properties Density Mass Volume Malleability (the ability to be molded) Ductility (the ability to be pulled into wires) Solubility (the ability to be dissolved) State of matter (solid, gas, liquid) Electrical conductivity Density Volume Thermal conductivity Mass Physical Properties Solubility Magnetic attraction Malleability Boiling point Melting Point Luster 5
Chemical Properties Are determined by a substance s ability to react with other substances. Examples of Chemical Properties The ability to react with air such as; - rust - tarnish - corrode - rot The ability to react with water/acids The ability to catch fire ( flammability ) 6
What are chemical properties of matter? A chemical property describes the ability of a substance to change into a new substance with different properties. Identity Theft Ability to rust Reactivity Ability to rot Chemical Properties Flammability React with water/acid Ability to tarnish 7
White Board Time!!! Show what you know? Ability of gun powder and fire to explode. Chemical 8
? The color of a sunset. Physical? The ability of a nail to rust. Chemical 9
? The shape of a leaf. Physical? The ability of wood to burn. Chemical 10
? The hardness of a diamond. Physical? The volume of your coke. Physical 11
? The mass of two camels. Physical Alike? Different? Draw a double bubble map in your notes to compare and contrast physical and chemical properties. 12
Physical Physical properties can be broken down further as extensive or intensive. Extensive Properties = property dependent of the amount of substance present or size SIZE MATTERS! Ex: to be determined by you! 13
Intensive Properties = property independent of the amount of substance present or size Ex: to be determined by you! SIZE DOESN T MATTER! Write up your experimental plan to determine: Which physical properties are extensive and which ones are intensive? 14