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10th Grade Chemistry Unit 6
HEB ISD LD Bell 10th Grade Chemistry Unit Six
15
Chemistry
10th Grade
10/22/2019

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Term
Valence Electron
Definition
an electron in the highest occupied energy level of an atom
Term
Ionic Compound
Definition
a compound composed of positive and negative ions
Term
Ionic Bond
Definition
the electrostatic attraction that binds oppositely charged ions together
Term
Chemical Formula
Definition
an expression that indicates the number and type of atoms present in the smallest representative unit of a substance
Term
Covalent Bond
Definition
a bond formed by the sharing of electrons between atoms; may be single, double, or triple bonds
Term
Molecule
Definition
a neutral group of atoms joined together by covalent bonds
Term
Diatomic Molecule
Definition
a molecule consisting of two atoms
Term
Polyatomic Ion
Definition
a tightly bound group of atoms that behaves as a unit and has a positive (+) or negative (-) charge
Term
Reactant(s)
Definition
the substances you start with in a chemical reaction
Term
Product(s)
Definition
the substances you end with after a chemical reaction has occurred
Term
Synthesis Reaction
Definition
A+B --> AB
Term
Decomposition Reaction
Definition
AB --> A+B
Term
Single-Replacement Reaction
Definition
AB+C --> B+AC
Term
Double-Replacement Reaction
Definition
AB+CD --> AD+CB
Term
Combustion Reaction
Definition
Fuel+O2 --> CO2+H2O
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