RT 205 HW1 Flashcards
Smallest part a substance and still retain the properties of that substance
Atom
The small dense center of an atom, which contain nucleons (neutrons and protons)
Nucleus
Radius of an atomic nucleus
10^-14m
Radius of an atom
10^-10m
Equal to the number of protons and neutrons in an atom
Mass number
Equal to the number of protons in an atom, and also equal to the number of electrons in a stable atom.
Atomic number
AMU in proton
1.00728
AMU in neutron
1.00867
AMU in electron
0.000548
Proton: Weight in Kg
1.672x10^-27 Kg
Neutron: Weight in Kg
1.674x10^-27 Kg
Electron: Weight in Kg
9.11x10^-31 Kg
When Z=differerent, N=Same
Isotone
When N=different, Z=Same
Isotope
When Z=Different, A=Same
Isobar
When A=Same, Z=Same in a metastable state
Isomer
1 AMU = ___________ MeV
931.5 MeV
The mass of a single atom
Atomic Weight
The amount by which the mass of an atomic nucleus is less than the sum of the masses of its constituent particles.
Mass Defect
The energy required to separate a single particle or group of particles from a molecule, atom, or nucleus.
Binding Energy
The emission or transfer of radiant energy as particles, electromagnetic waves
Radiation
A stream of atomic or subatomic particles that may be charged positively or negatively or not at all.
Particulate Radiation
Any of the atomic particles that compose matter and energy, such as protons, neutrons, and electrons
Elementary particles
Velocity= Frequency x Wavelength
Wave Model
High frequency, high energy EM radiation interacts like a particle when contracting matter. Photon energy and frequency are directly related.
Quantum Model
The spontaneous emmission of radiation, either directly from unstable nuclei, or as a consequence of a nuclear reaction
Radioactivity
Formula to convert degree Celcius to Farenheit
F=1.8(C)+32
Formula to convert degree Farenheit to Celcius
C= (F-32)*1.8
If 1 KV = 1000 V, how many volts are equal to 74 kV
74,000 V
How many elements in the periodic table of elements?
118
How many elements are natural in the P.T.E.?
92
Define Force and give derived and SI Units
Anything that changes an objects’s motion
F= mass x acceleration
= Kg m/s^2
= N
Define Work and give derived and SI Units
Measures the change a force has on an object’s position or motion
W= Force x distance
= N x m
= kg m/s^2 x m
Define Power and give derived and SI Units
Rate at which work is done P= Weight / time = Kg m^2/s^2/s = Kg m^2/s^3 = Watt (W)
Define Energy and give derived and SI units
The ability to do work
Derived = E , SI= J
How many Joules in 1 eV?
1.602 X 10^-19 J
A substance that cannot be split into simpler substances
Element
The type of valence when an atom donates an electron
+ valence
The type of valence when an atom gives or accepts an electron
- valence
The giving and accepting of electrons between atoms
Ionic Bond
Atoms that share the outermost shell
Non-Polar Covalent Bonds
Atoms alignment creates a positive charge at one end and a negative charge on the opposite end.
Polar Covalent Bonds
Attraction/ repulsion stability that forms between two atoms when they share electrons
Covalent Bonds
What is Avogadro’s #? (The actual # not definition)
6.0228x10^23
