Honors Chem unit 3 Flashcards
Theory that all matter is made of Adams
Atomic theory
All chemical and physical changes mass and energy is conserved
Law of conservation of mass/energy
Compound will always contain same ratio of atoms
Law of definite proportions
Same elements combined in different rates to form different compounds
Law of multiple proportion
Statements about
atoms
person?
John Dalton
Cathode ray tube experiment, plum pudding model
JJ Thompson
Gold foil experiment discovers nucleus
Ernest Rutherford
Together/overcome between protons
Strong nuclear force
Same number, protons but different number of neutrons
Isotopes
Electrons have both particle and wave properties
Dual nature of light
Form of energy that has wave properties
Electromagnetic radiation
All forms of electromagnetic radiation
Electromagnetic spectrum
Distance between two successive points
Wave length
How many peaks pass a given point in one second
Frequency
Impossible to know both the location and speed of an electron
Heisenberg uncertainty principle
Tell us the location of an electron
Quantum numbers
Shows how far an electron is from its nucleus
Principal quantum numbers
The shape of the orbital
Angular momentum, quantum numbers
High probability of finding electrons
Orbital
Tells spin of an electron
Spin quantum numbers
No, two electrons can have all quantum numbers be the same
Pauli exclusion principle
Shows arrangement of electrons in an atom
Orbital diagram
Electrons filled the lowest energy levels first
Aufbau principle
Fill one electron in each box of a sub level before pairing
Hunds rule
Electrons and outermost energy level that are involved in bonding
Valence electrons
Makes electron more stable
Exceptions
Form because of gains/loss of electrons
Ions
Same electron configuration
I isotonic
