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34 Cards in this Set
- Front
- Back
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One |
Mono |
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Two |
Di |
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Three |
Tri |
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Four |
Tetra |
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Five |
Penta |
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Six |
Hexa |
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Seven |
Hepta or Septa |
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Eight |
Octa |
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Nine |
Nona |
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Ten |
Deca |
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What is a covalent bond? |
Two or more atoms share an electron |
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What elements form covalent bonds? |
Nonmetals |
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What is a coordinate covalent bond? |
One atom donates both elections to be shared |
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What are the four main shapes molecules take according to the VSEPR theory? |
Linear triatomic, bent triatomic, pyramidal, tetrahedral |
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What are the four main shapes molecules take according to the VSEPR theory? |
Linear triatomic, bent triatomic, pyramidal, tetrahedral |
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What is a polar covalent bond? |
A polar covalent bond is formed when two atoms share electrons unequally, and one atom has a slight positive charge, while the other atom as a slight negative charge |
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What are the four main shapes molecules take according to the VSEPR theory? |
Linear triatomic, bent triatomic, pyramidal, tetrahedral |
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What is a polar covalent bond? |
A polar covalent bond is formed when two atoms share electrons unequally, and one atom has a slight positive charge, while the other atom as a slight negative charge |
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What is a nonpolar covalent bond? |
Electrons in bond are shared equally |
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What are the four main shapes molecules take according to the VSEPR theory? |
Linear triatomic, bent triatomic, pyramidal, tetrahedral |
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What is a polar covalent bond? |
A polar covalent bond is formed when two atoms share electrons unequally, and one atom has a slight positive charge, while the other atom as a slight negative charge |
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What is a nonpolar covalent bond? |
Electrons in bond are shared equally |
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What determines if a bond is polar, nonpolar, or ionic? |
The electronegativity difference between the two atoms Difference greater that 2.0 = ionic Difference less than 0.4 = nonpolar Difference between 0.4 and 2.0 = polar |
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What is a polar molecule? |
One side positive, one side negative; due to the presence of a polar bond and the shape of the molecule |
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What are intermolecular attractions? |
Forces that occur between two or more molecules |
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What are intermolecular attractions? |
Forces that occur between two or more molecules |
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What are Van Der Waals forces? |
The types of intermolecular attractions |
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What are intermolecular attractions? |
Forces that occur between two or more molecules |
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What are Van Der Waals forces? |
The types of intermolecular attractions |
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What are dispersion forces? |
The motion of electrons between molecules holds them together. The more electrons, the stronger. Determines the state of matter the molecules are in. |
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What are dipole interactions? |
The attraction of polar molecules to each other due to their oppositely charged ends (negative attracted to positive) |
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What are dipole interactions? |
The attraction of polar molecules to each other due to their oppositely charged ends (negative attracted to positive) |
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What are hydrogen bonds? Why are they important? |
Hydrogen bonds occur when hydrogen atoms covalently bond with another atom: form a bond with unshared electrons on another molecule. Happens when hydrogen is electron deficient. Important because it’s the strongest intermolecular attraction, gives water it’s properties, important in biological molecules such as proteins. |
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Compare and contrast the properties of ionic compounds, and covalent compounds? |
Ionic: high melting point, crystals at room temp, conduct electricity when in molten or dissolved form, made of metal + nonmetal, electrons transferred Molecular: low melting point, solid, liquid, or gas, bad at conducting electricity, made of 2+ nonmetals, electrons shared |
