Midterm Pointers Flashcards
The alphabetic abbreviations of an element
Chemical Symbols
It determines the chemical properties of an element
Number & Arrangement of Electrons
Eqqual to the number of protons
Atomic number
Atomic number symbol
Z
Atomic mass number formua
P + n
Atomic mass number symbol
A
Protocol for Representing Elements in a Molecule
- Upper Left: atomic mass (A)
- Lower Left: atomic number (Z)
- Upper Right: valence state (+/-)
- Lower Right: number of atoms/molecules
“The (1) & the precise (2) of an atom are not equal!”
- atomic number
- mass
Various nuclear arrnagments
Isotope
Isobar
Isotone
Isomer
The group of atoms of various elements.
Molecules
The smallest unit of a
compound
Molecules
90% of the human body
CHON (C-6, H-1, O-8, N-7)
Carbon, Hydrogen, Oxygen, Nitrogen
Any quantity of one type of molecule
Chemical Compound
NaCl (Sodium Chloride) which is a common (1) is an example of (2)
- table salt
- chemical compound
The chemical union between atoms formed by sharing one or more pairs of electrons.
Covalent Bond
Covalent Bond example
H2O
The bonding that occurs because of an electrostatic force between ions
Ionic Bond
Example of an Ionic Bond
NaCl, Sodium bicarbonate (NaHCO3)- Baking soda
The primary constituents of the x-ray tube target
Tungsten (W-74) & Molybdenum (Mo-42)
Radiographic & fluoroscopic contrast agents
Barium (Ba-56) & Iodine (I-53)
Important component of human tissue
Carbon (C-6)
The amount of energy (34 keV) necessary to ionize tissue atoms
Ionization Potential
The smallest particle of an element is an (1); the smallest particle of a compound is a (2)
- atom
- molecule
Determines the chemical element and the behavior of an atom
Number of protons
The force that keeps an electron in orbit
Centripetal force
Centripetal force is also called —
Center-seeking force
The force that causes an electron to travel straight and leave the atom.
Centrifugal force
Other term for Centrifugal force
Flying-out-from-the-center force
The strength of the attachment of an electron to the nucleus
Electron Binding Energy
Symbol for Electron Binding Energy
Eb
