Term
Physcial and Chemical Change
Physical and Chemical Property |
|
Definition
(P)When characteristics change. (C) A new substance is made.
(P)Appearence, characteristics. (C)Characteristic behaviours when a new substance is made. |
|
|
Term
| Endothermic and Exothermic |
|
Definition
Heat is absorbed
Heat is released |
|
|
Term
| Pure Substance and Mixtures |
|
Definition
Only one element in a substance
More than one element in a substance |
|
|
Term
| Homogenous and Heterogenous |
|
Definition
|
|
Term
|
Definition
A single atom
Multiple atoms |
|
|
Term
|
Definition
Melting, Freezing, Sublimation
Deposition, Condensation, vaporization |
|
|
Term
Electronegativity
Electron Affinity
Atomic Radius
Ionization energy |
|
Definition
Increases left to right
Increases left to right
Increases from top to bottom
Increases left to right |
|
|
Term
|
Definition
The sharing of electrons between two atoms with different electronegativity.
Atom with higher electronegativity = -
Atom with lower electronegativity = + |
|
|
Term
|
Definition
Sea of valence electrons
Valence electrons from one atom can easily migrate to the valence shell of another. This is why metal is such a good conductor. |
|
|
Term
|
Definition
| The sharing of electrons between two atoms. It can either be Polar or Non-polar depending on the electronegativity. Like a tug-o-war of electrons. |
|
|
Term
|
Definition
| Occurs between two atoms of the same element or two atoms of very similar electronegativity. The shared pair of electrons will spend equal time revolving around each nucleus |
|
|
Term
Intramolecular Forces
Intermolecular Forces |
|
Definition
Forces that keep the atoms held together in a molecule.
Forces that attract molecules. |
|
|
Term
Dipole-Dipole Forces
Ion-Dipole Forces |
|
Definition
Forces that interact between two polar molecules.
Forces that interact between Ions and Polar molecules. The strength of the attraction depends on the size of the ion and the magnitude of the dipole. |
|
|
Term
|
Definition
| Attractive forces between all molecules. It is the only force of attraction between non-polar molecules. These are the WEAKEST of intermolecular forces. These forces are induced by nearby ions or dipoles |
|
|
Term
| Liquid, Solid, and Gas (London.D.F) |
|
Definition
Solid: Rigid, Hard, Ionic, strongest intermolecular force.
Liquid: Not Rigid, Not Hard, Polar molecule, weaker intermolecular force, takes shape of container.
Gas: very far apart, weakest intermolecular force, non-polar |
|
|
Term
| What do we consider molecules that exhibit symmetry? |
|
Definition
| Non-polar. They would have no net-dipole. Linear, Planar, Tetrahedral. |
|
|
Term
|
Definition
| A compound that releases water when heated. |
|
|
Term
|
Definition
| An element that contains hydrogen and another electronegative element. (It can only consist of two elements.) |
|
|
Term
|
Definition
| An element that contains Hydrogen, Oxegyn, and a third element that is usually a non-metal. |
|
|
Term
| For Double Displacements Remember: |
|
Definition
2 soluable = nothing
1(aq) and 1(s)= cloudy |
|
|
Term
|
Definition
A very rapid reaction that produces oxides.
Fuel + Oxegyn --> Oxide + Energy |
|
|
Term
|
Definition
|
|
