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Matter

8th Grade Unit 1

TermDefinition
Matter anything that has mass and takes up space, or volume
Mass a measure of the amount of matter in an object
Molecule the smallest particle of a substance that retains all the properties
Atoms the smallest particle of an element that can exist either alone or in combination
Pure Substance a substance that is made up of only one type of atom or molecule, and has a fixed structure
Elements a simple substance that cannot be broken down into smaller parts or changed into another substance
Chemical Symbols a one or two-letter abbreviation used to represent a chemical element.
Periodic Table a tabular array of the chemical elements organized by atomic number
Compounds substance made up of two or more different elements that are chemically joined together in a fixed ratio
Chemical Formula tells us the number of atoms of each element in a compound. It contains the symbols of the atoms of the elements present in the compound as well as how many there are for each element in the form of subscripts.
Models a representation of a system, process, event, or idea that is used to explain and describe phenomena that are too complex, large, or small to observe directly.
Heterogeneous Mixture a substance that is not uniform in composition and does not blend smoothly, and its constituents do not mix uniformly
Solute a substance that is dissolved into another substance
Composition the arrangement, ratio, and type of atoms in molecules of chemical substances
Solvent a substance, ordinarily a liquid, in which other materials dissolve to form a solution.
Homogeneous Mixture a mixture of substances that are blended so well that the individual substances are not visible and the mixture has the same properties and composition throughout
Solution a type of mixture involving two or more substances.
Created by: klstorie
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