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Download Ductility-the ability to be stretched into wires
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Properties of Matter Demo #1: Tearing Paper Does the paper change its chemistry (chemical identity) and form a new substance with different properties? Is the ability to be torn a physical or chemical property? Physical Property: Property that can be tested/observed without changing chemical identity of the substance; can be undone Is tearing a physical change or a chemical change? Demo #2: Burning Paper Does the paper change its chemistry (chemical identity) and form a new substance with different properties? Is the ability to burn a physical or chemical property? Chemical Property: A property that can only be tested/observed by changing the chemical identity of a substance; hard to undo Is burning a physical change or a chemical change? Adhesion- tendency of particles of different substances to attract to one another (__.P) Boiling/Condensation Point- Temperature at which a liquid turns to gas AND Temperature at which a gas turns to a liquid (__.P) Substance Melting/freezing pt. Helium -272C Oxygen -218C Mercury -39C Water 0 C Lead 327C 962ºC Gold Boiling/condensing pt. -269C -183C 357C 100C 1749C 2162ºC Brittleness- The tendency of a solid to break or shatter (__.P) Cohesion- The tendency of particles of the same substance to attract one another (__.P) Density- Mass per unit volume; the mass of a known volume of matter; compactness (__.P) Ductility- The ability to be stretched into wire—this is a property of metals (__.P) Elasticity- The tendency of a solid substance to return to its original form after being stretched (__.P) Electrical Conductivity- The ability of electricity to move through a material. (__.P) Hardness- Ability of solids to resist being scratched . (__.P) Luster- The “shininess” of a substance. The ability of a substance to reflect light. (__.P) Magnetism- The ability to form a magnetic field and attract other metals (__.P) Malleability- The ability to be pounded into flat sheets—this is a property of metals (__.P) Mass- The amount of matter that something is made of. (__.P) Melting/Freezing point- Temperature at which a solid turns to liquid AND Temperature at which a liquid turns to solid (__.P) Substance Helium Oxygen Mercury Water Lead Gold Melting/freezing pt. -272C -218C -39C 0C 327C 962ºC Boiling/condensing pt. -269C -183C 357C 100C 1749C 2162ºC http://www.youtube.com/watch?v=QaJ_Yxj9bG8 http://www.youtube.com/watch?v=aRwlrFimnZk Solubility- The ability to dissolve in another substance—how well the substance dissolves. (__.P) State of Matter- The physical form in which a substance exists, such as a solid, liquid, gas, or plasma. (__.P) Plasma Surface Tension- Tendency of liquid particles to stick together, forming a “skin” (__.P) Tensile Strength- a measure of how far something will stretch or bend before it cracks or breaks (__.P) Texture- The smoothness or roughness of a substance (__.P) Thermal Conductivity- The ability to transfer thermal energy (heat) from one area to another (__.P) Viscosity- A liquid’s resistance to flow (__.P) Volume- The amount of space an object occupies (__.P) Ability to Burn (Flammability)- Ability of a substance to support combustion (burn) (__.P) Ability to Rust- Ability of a metal (like iron) to bond with oxygen (from air or water) to form a new substance (__.P) Ability to Corrode- Ability of a substance to break down and form a new material when reacting with its environment—water, acid, salt, etc. (similar to rusting) (__.P.)