PROPERTIES_OF_MATTER__schoology_.pdf

PROPERTIES OF MATTER  Properties of matter Physical properties Chemical properties Those that can be observed by Observed when a substance the senses react chemically with another substance  2...

PROPERTIES OF MATTER  Properties of matter Physical properties Chemical properties Those that can be observed by Observed when a substance the senses react chemically with another substance  2 types of physical properties Physical extrinsic/extensive Physical intrinsic/intensive properties properties Not characteristic of the Characteristic regardless of the substance itself shape and size Dependent on the amount Constant/ independent on the amount BP,MP, electrical resistivity, luster, hardness, density, transparency Height, volume , shape size solubility, polarity, color odor  Extrinsic properties ( extensive ) Intrinsic properties ( intensive ) Properties of metals and non- metals Metals Non-metals metals metalloids Non-metals Ductility Ductile Non-ductile Iron ,Fe Boron, B Oxygen, O ( drawn into wires ) Malleability Malleable Non-malleable Magnesium Silicon, Si Nitrogen, N (hammered into thin , Mg sheets ) brittleness brittle Luster luster Dull in color ( ability to reflect light ) Conductivity of heat Good conductor of Poor conductor heat Conductivity of Good conductor of Poor conductor electricity electricity Density With high density Low density ( due to compactness ) Melting point High melting point Low melting point /due to the strength of the electrostatic attraction between metallic particles  Chemical properties can be measured or observed only when matter undergoes a change to become an entirely different kind of matter. reactivity of acids to metals flammability ability to rust Ability to decay reactivity with water combustibility pH, heat of combustion Compare consumer products on the basis of their components for use safety , quality and cost( MELC ).