chemistry 5

19 terms by ekazziie 

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avogadro's number

number of particles in one mole of a substance; 6.02 x 10^23

chemical equation

the statement showing how substances react using chemical formula

compound

two or more substances bonded together through a chemical equation.

amphoteric

a substance that can react like an acid and a base

atom

the fundamental building blocks of matter

atomic mass

the exact mass of an atom

atomic number

the number of protons in an element; defines the element

barometric pressure

the pressure of the atmosphere at a specific location

base

a substance that forms OH- in water or a proton acceptor

chemical equation

the statement showing how substances react using chemical formulas

chemical formula

the symbols and subscripts showing the composition of a compound

chemical properties

characteristics describing how a substance reacts with other substances

covalent bond

a chemical bond where atoms share electrons

density

the mass divided by the volume

enthalpy

the heat energy gained or lost during a chemical reaction

entropy

a measure of the randomness of a reaction

polyatomic ion

an ion composed of more than one element

salt

an ionic compound formed by the reaction of an acid and a base

semimetals

elements that have characteristics of both metals and non-metals

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