pure substance the cannot be damaged down into less complicated substances by chemical or physical means. Each aspect has distinct physical and chemical properties.

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compounda pure substance comprised of atoms of 2 or an ext different aspects joined with each other by chemistry bonds.
mixturea mix of 2 or an ext subtances that are not chemically combined. Not a pure subtance.
pure substancea sample the matter, either a solitary element or a solitary compound, that has definite chemical and also physical properties.
physical changea readjust of issue from one kind to another without a adjust in chemistry properites -- such together a state change, dissolving, crushing, bending, cutting, etc.

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chemical changea change that occurs when materials are readjusted by the do or break of chemistry bonds into new substances with new properties.
law of conservation of matter/massmatter cannot be created or destroyed; in a chemistry reaction, this means that the number and type of atoms in the reactants need to equal the number and form of atom in the products
atomsmallest unit of an facet that still has actually the properties of the element
moleculesmallest unit of a compund the still has the properties of that compound; at the very least 2 atom bonded together
solutionhomogenous mixture of 2 or more substances; example: salt-water
dissolvingthe process in which corpuscle of building material separate and spread same throughout a mixture
homogenous mixturea mixture v all components evenly mixed throughout; the looks favor on substance
heterogenous mixturea mixture that is an extremely unevenly mixed, different parts the the mixture room visible
productsin a chemical reaction, the compounds or aspects that are created by the reaction
reactantsin a chemistry reaction, the link or facets that enter into the reaction
massamount of issue in an objects, measure up in grams or kilograms
flammabilitya chemical residential property that describes how fine a product reacts come burn through oxygen
solubilitya physical residential or commercial property that describes how well a material dissolves into one more material
characteristic propertya physical or chemical residential or commercial property that deserve to be offered to identify a substance; it does not vary through the lot of the substance; ex: boil point, ,flammability, solubility