SCIENCE-Ch.6 Flashcards
What is a structural formula?
It shows how the molecules are connected in a ionic bond by using a hyphen.
What is an electron dot diagram?
A diagram of an atom, ion, or molecule in which the dots represent a valence electron.
What is a space-filling?
Shows two spheres over lapping each other to show how atom are three-dimensional and have over lapping orbitals.
What is the electron cloud?
It is a model that shows the general locations of an electron.
Describe a covalent bond.
A chemical bond in which two atoms share one pair of electrons.
Describe a molecule.
A neutral group of atoms that are joined together by one or more covalent bonds.
Is this true or false?
In a covalent bond, the atoms are held together by the attractions between the shared electrons and protons in each nucleus.
True
In general, elements at the _______ of a group have a greater attraction for electrons than elements at the ______.
Top, bottom
Describe a polar covalent bond.
A bond where electrons are not shared equally.
What determines a molecule being polar or nonpolar?
The type of atoms in the molecule and the shape of the molecule.
Is water polar or nonpolar?
Polar
Water has a higher boiling point than carbon dioxide because attractions between polar molecules are _______ than attractions between nonpolar molecules.
Stronger
What happens when an atom loses electrons?
It forms to a cation
What happens when an atom gains electrons?
It forms to a anion
Describe the type of electron configuration that makes an atom stable and not likely to react.
The highest occupied energy level of an atom is filled with with valence electrons.
