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physical property an aspect of matter that can be observed or measured without changing it, used to describe or define a object density physical the amout of mass per volume/ what kind of property is it luster physical how shiney or dull an object is/what kind of property is it boiling point physical the temp a liquid becomes a gas/what kind of property is it melting point physical property the temp a solid becomes a liquid/ what kind of preperty is it texture physical the type of surface of a material/what kind of property is it color physical the color of an object/what kind of property is it hardness physical how well a material withstands the application of force/what kind of property is it ductility/malleability physical being able to be stretched or compressed without breaking/what kind of property is it chemical property may be only observed by changing the chemical identity of a substance flammability ph reactivity bonding type name all 4 chemical propertys density the amount of mass "stuff" in an object mass diveded by volume g/m3 or g/l 1.00 g/l density of water sinks objects more dense then 1.00 floats objects less dense then 1.00 ph scale the scale used for measuring the acidity or alkalinity (base) of a substance acid 0-6 on ph scale neutral 7 on scale base 8-14 on scale more acid closer to 0 on scale more basic closer to 14 on scale physical change any change in an object that does not resolve in the production of a new substance breaking cutting or crushing 3 ex of physical change phase change a change in a state of matter chemical change substances are changed into different substances new color chem change leaves energy is absorbed or realeased chem change release of light, change in temp odor changes chem change spoiled food reacts with oxyegen chem change oxidizing or rust production of solid or gas chem change burning/bubbles not easily reversible chem change can you turn somke back into wood solid very low molecular vibration, low energy level, tightly packed, do not flow, takes shape of container liquid moderate amount of molecular vibration, moderate energy level,flows,takes shape of container,loosely bonded together gasses high amount of molecular vibration, high energy level,free moving (not bonded together), do not take shape of container melting solid to liquid vaporization liquid to gas condensation gas to liquid freezing liquid to solid sublimation solid to gas deposition gas to solid heat total amount of thermal energy, includes kinetic (molecular vibration) energy and the amount of molecules temperature average measure of kinetic energy in a system iceburg cez more molecules which has more heat iceburg or cuo of hot water and why? up at a phase change in a heat curve energy is being built____ break energy in a phase change in a heat curve is used to ______ the bonds pure substance matter that contains only 1 kind of particle,cannot be seperated by physical means compound 2 or more elements bounded together mixture matter that is made up of 2 or more pure substances, can be seperated by physical means homogeneous mixture mixture that is the"same" throughout, compleatly dissolve and has a uniform(same) composition solution made up of small particles, looks clear, nonfilterable, homo solute being dissolved solvent doing the dissolving colloid made up of large particles, looks milky, nonfilterable, homo heterogeneous mixture mixture that id "different" throughout. can be pulled apart and is not in uniform suspension visable particles, filterable hetero