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Environmental Science
Land and Water Use
Unit 5 Science
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Environmental Science
Land and Water Use
9th
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33 Terms
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Atom
made of protons and neutrons in a nucleus and electrons orbiting the nucleus.
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reason for atoms having diff characteristics
Atoms of different elements have different characteristics because of different amounts of protons, neutrons, and electrons.
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Neutral Atom
same amount of protons and electrons, neutrally charged
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Ion
different numbers of electrons than original
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Cation
type of ion where atom has more protons than electrons, positively charged
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Anion
type of ion where atom has more electrons than protons, negatively charged
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Isotope
different number of neutrons
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Intramolecular bonds
hold atoms together within a molecule
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Intermolecular bonds
bond that exists between molecules
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are intramolecular or intermolecular bonds stronger?
intramolecular
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molecule
a group of 2+ atoms held together by chemical bonds (**H2, O2, and O3)**
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compound
**different types of atoms chemically bonded (CaCl2 or NaBr)**
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covalent bonds
formed when non metal atoms share their valence electrons to gain octets (a full valence shell)
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ionic bonds
one atom gives up electron to another atom
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hydrogen bonds
two water molecules bonding because of the positive ends of hydrogen molecules bonds with the negative end of the oxygen molecules
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are covalent or hydrogen bonds stronger
covalent
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proton
Positively charged subatomic particle
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electron
negatively charged subatomic particle
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Neutron
neutrally charged subatomic particle
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Nucleus
Center/core of an atom, consisting of protons and neutrons
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Energy Level/Electron Shell
Regions surrounding the nucleus containing a specific number of electrons
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Atom
The smallest particle of matter that contains the characteristics of an element
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Atomic Number
The number of protons in an atom
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Mass Number
The total number of protons and neutrons in an atom
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Atomic Mass
Unrounded number of the mass of an atom
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Valence electrons
Electrons in the outer shell of an atom
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Polarity
atoms being positively and negatively charged
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Cohesion
Molecules of the same substance bonding
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Adhesion
Molecules of different substances bonding
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capillary action
The ability water has to flow upward against the force of gravity due to cohesion and adhesion.
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universal solvent
Universal Solvent - liquid that dissolves most/all solutes **(water)**
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solvent
a liquid that dissolves a particle
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Solute
particle or liquid that gets dissolved in the solvent
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