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

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

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chemical changea change that occurs when products are changed by the do or breaking of chemical bonds into new substances with brand-new properties.
law of preservation of matter/massmatter cannot be developed or destroyed; in a chemical reaction, this method that the number and form of atom in the reactants need to equal the number and type of atom in the products
atomsmallest unit of an facet that still has actually the nature of that element
moleculesmallest unit the a compund the still has the nature of that compound; at least 2 atoms bonded together
solutionhomogenous mixture that 2 or much more substances; example: salt-water
dissolvingthe procedure in which corpuscle of substances separate and spread evenly throughout a mixture
homogenous mixturea mixture through all components evenly combined throughout; that looks favor on substance
heterogenous mixturea mixture the is very unevenly mixed, different parts that the mixture room visible
productsin a chemistry reaction, the link or facets that are developed by the reaction
reactantsin a chemistry reaction, the compound or aspects that go into into the reaction
massamount of matter in one objects, measure in grams or kilograms
flammabilitya chemical home that explains how well a product reacts to burn with oxygen
solubilitya physical home that describes how fine a material dissolves into an additional material
characteristic propertya physical or chemical property that have the right to be used to identify a substance; that does no vary v the lot of the substance; ex: cook point, ,flammability, solubility