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Chemical Reactions

Vocabulary for Topic 9

TermDefinition
mixture two substances that are together in the same place but their atoms are not chemically bonded
colloid a mixture containing small, undissolved particles that do not settle out
suspension a mixture in which particles can be seen and easily separated by settling or filtration
solution a mixture containing a solvent and at least one solute that has the same properties throughout; a mixture in which one substance is dissolved into another
solvent the part of a solution that is usually present in the largest amount and dissolves a solute
solute the part of a solution that is dissolved by a solvent
solubility a measure of how much solvent can be dissolve in a given solvent at a given temperature
dissolve when one substance completely disappears into another substance to form a solution
chemcial change a chnage in which one or more substances combine or break apart to form a new substance
physical change a change that alters the form or appearance of a material but does not make the material into another substance
reactant a substance that enters into a chemical reaction
product a substance formed as a result of a chemical reaction
exothermic reaction a reaction that releases energy; usually in the form of heat
endothermic reaction a reaction that absorbs energy
law of conservation of mass the principle that the total amount of matter is neither created nor destroyed during any chemical or physical change
open system a system in which matter can enter from or escape to the surroundings
closed system a system in which no matter is allowed to enter or leave
synthetic created or manufactured by humans; not found occuring in nature
natural resource anything naturally occuring in the environment that humans use
polymer a long chain o f molecules made up of repeating units
Created by: user-1703078
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