Day 1: 2/4/11 Big Idea (for this unit): Periodic trends in the properties of atoms allow for the prediction of physical and chemical properties. Today’s Concept: Trends in the periodic table can predict the properties and behaviors of elements. At the end of today, you will be able to: 1. know that the boxes on the Periodic Table are each for a different element. 2. Know what an element is. 3. conduct tests for physical and chemical properties. 4. distinguish between physical and chemical properties. Opener: Answer the “What Do You Think?” question in your packet. Discuss your answer in small groups and as a class. For You To Do: Test for physical and chemical properties of metals and nonmetals in the lab. Complete this section of the packet. Discuss observations as a class. Powerpoint presentation on elements and properties Closure Question: What is the difference between a chemical and a physical property? Take Home Assignment: Safety Poster due Tuesday. (FYI) Next class – 10th Grade Pre-test for Chemistry (it doesn’t count for a grade). The Chemistry teachers want to know how much you know about Chemistry before taking our course so that we may know what areas to focus on. Element: any material that cannot be broken down by chemical means. Physical Property: a property that can be measured without causing a change in the substance’s chemical composition Chemical Property: a characteristic that a substance undergoes in a chemical reaction that produces new substances Luster (shiny): the reflection of light from the surface of a material described by its quality and intensity Ductility: a property that describes how easy it is to pull a substance into a new permanent shape, such as, pulling into wires. Malleability: the ability to be hammered into a shape without breaking. Reactivity: a property that describes how readily a material will react with other materials. http://www.youtube.com/watch?v=d0zION8x jbM Physical Properties: Chemical Properties: 1. Color 1. Reacts with air 2. Conductivity 2. Reacts with acid 3. Physical state at room temperature (solid, liquid, or gas 4. Luster 5. Malleability 6. Ductility What is the difference between a physical property and a chemical property?
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