elements, isotopes, ions & bonds main ideas 1.atoms vs. elements 2.atomic variation s 3.types of...
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ELEMENTS, ISOTOPES, IONS & BONDS
MAIN IDEAS1. ATOMS VS.
ELEMENTS2. ATOMIC
VARIATIONS3. TYPES OF
CHEMICAL BONDS
Objective Identify and define
Elements, Isotopes, Ions &
Chemical Bonds on IaN pg. 25 utilizing Venn diagrams on
IaN pg. 24 to compare and
contrast them.I am not a product of my circumstances. I am a product of my decisions.
Stephen Covey
IaN pg. 25
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Ions vs. Isotopes & Covalent vs Ionic
IaN pg. 24Ions
Isotopes
Covalent Bond
Ionic Bond
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ELEMENTS
Pure substanceOne type of atomElements are unique because of the number of protons in the nucleus of their atoms•79 protons = gold•6 protons = carbon•17 protons = chlorine
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ISOTOPES
•Isotopes are atoms of the same kind, except they have different numbers of neutrons than “normal”.
•Same protons and electrons, but different mass (amu).
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ION
•An atom with a charge•Atoms can gain or lose electrons to become an ion.
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CHEMICAL COMPOUNDS
•Two or more elements combine in a specific proportion to form a new substance with different properties.
•Chemical & Physical Properties of elements change when the same elements are combined in a compound
Compound: meaning
“to put together”
Latin
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•Molecules with regions that are more + or – (H2O)
•Known as POLARITY•Covalent compounds that share electrons unevenly
•Caused by the structure atoms within compounds
•Results in COHESION between the same molecules &/or ADHESION between different molecules.
VAN DER WAALS FORCES
ADHESIONCOHESION
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•Molecules with regions that are more + or – (H2O)
•Known as POLARITY•Covalent compounds that share electrons unevenly
•Caused by the structure atoms within compounds
•Results in COHESION between the same molecules &/or ADHESION between different molecules.
VAN DER WAALS FORCES
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POLARITY DEMONSTRATION
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Chemical Bonds• The “glue” that holds compounds
together by electrons being shared or transferred between atoms• Form to fill VALENCE SHELL = Atomic Stability• 2 Main Types
• Ionic Bonds• Covalent Bonds
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IONIC BONDS
•Atoms transfer (give and take) electrons to form ions
•Ions are atoms with a + or – charge due to a different # of electrons than “normal”
•Cations = + charge atom ( Protons > Electrons)
•Anions = - charge atom ( Protons < Electrons)
•Oppositely charged ions attract to form ionic compounds
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COVALENT BONDS
•Atoms share one or more electrons = covalent bond
•Single Covalent Bond = 1 pair of shared electrons (H2)
•Double Covalent Bond = 2 pairs of shared electrons (O2)
•Triple Covalent Bond = 3 pairs of shared electrons (N3)
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•O2 Double Covalent Bond = 2 pairs of electrons shared
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•N3 Triple Covalent Bond = 3 pairs of electrons shared
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Ions vs. Isotopes & Covalent vs Ionic
IaN pg. 24Ions
Isotopes
Covalent Bond
Ionic Bond