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Details Title: Changes in Matter Description: Vocabulary Total Flash Cards: 12 Created: 09/13/2004 16:30:01	To study from this set of flash cards, or to create your own your own study flash cards, register HERE. If you are already a registered user, CLICK HERE.
Cards Term Ion Definition An atom that has lost or gained electrons and there has a charge Term Substance Definition Matter that has the same composition and properties throughout Term Compound Definition A substance produced when elements combine and whose properties are different from each of the elements in it. Term Mixture Definition A combination of compounds and elements that has not formed a new substance and whose proportions can be changed without changing the mixture's identity. Term Formula Definition The formula tells you which elements make up a compound as well as how many atoms of each element are present Term Homogeneous Definition """the same throughout."" You can't see the different parts in this type of mixture. Homogeneous mixtures can be solids, liquids, or gases. " Term Heterogeneous Definition has larger parts that are different from each other. You can see the different parts of a heterogeneous mixture. Term Physical property Definition "Characteristic that can be observed, using the five senses, without changing or trying to change the composition of a substance.All matter can be described by physical properties that can be observed using the five senses. Properties of an element or compound that can be observed without a chemical reaction of the matter." Term Chemical property Definition Characteristic that cannot be observed without altering the sample. properties of an element or compound in chemical reactions. Chemical properties are determined by the reaction of a substance with other substances. Term Law of conservation of mass Definition States that mass is neither created nor destroyed and as a result the mass of the substances before a physical or chemical change is equal to the mass of the substances present after the change. Term Chemical change Definition The matter is changed chemically and shows different physical and chemical properties after the change. Term Physical change Definition "The matter is not changed chemically, just changed to another phase (i.e. gas, liquid, solid) or separated or combined."