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The flashcards below were created by user
Toastedbread
on FreezingBlue Flashcards.
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anything that occupies space and has mass
MATTER
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a substance that cannot be broken down into other substances
ELEMENT
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you need less than .01% of these to live
ex: zinc, copper, iron, boron...
TRACE ELEMENTS
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a substance consisting of 2 or more elements combined in a fixed ratio
ex: table salt (NaCl)
COMPOUND
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small unit of matter that retains properties of an element
ATOM
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refers to thenumber of protons in an atom
ATOMIC NUMBER
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protons+neutrons
MASS NUMBER
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atoms share, donate, and receive electrons to fill their shell
CHEMICAL BOND
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an atom or molecule with an electrical charge resulting from a gain of loss of electrons
ION
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when attractions hold ions with opposite charges together
IONIC BONDING
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results when atoms share outer shell electrons
COVALENT BOND
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formed when atoms are held together by covalent bonds
MOLECULE
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the attraction for shared electrons
ELECTRONEGATIVITY
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the attraction between atoms and shared electrons is equal
NONPOLAR
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the atoms have a different electronegativity (the attraction between atoms and shared electrons is not equal)
POLAR
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when 2 polar molecules are next to each other (hydrogen is one of them)
HYDROGEN BOND
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hydrogen bonds cause like molecules to stick together
COHESION
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the clinging of one substance to another
ADHESION
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a liquid consisting of a uniform mixture of 2 or more substances.
SOLUTION
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the dissolving agent (dissolves other things)
SOLVENT
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the dissolved substance
SOLUTE
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have more H+ than OH-
ACIDIC SOLUTIONS
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have more OH- than H+
BASIC SOLUTIONS
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used to describe whether a solutions is acidic or basic
pH SCALE
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2H2 + O2 >>> 2H2O
CHEMICAL REACTION
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