People/Dates
When did ____ discover x-rays?
Roetgen in 1895
Current is measured in
amperes
Who is considered the father of the periodic table?
Dimitri Mendeleev
the minimum amount of energy that can be gained or lost by an atom is termed:
Quantum
What is the charge for an electron, proton, and neutron?
E - negative
P - positive
N - no charge
Who discovered fluoroscopy and when?
Eddison in 1898
unit of electric pressure/potential
watts
Describe periodic groups and what they tell you about electrons
Groups are vertical columns and tell you the amount of electrons in the outer most shell
What is associated with high energy?
high energy and short wavelenghts
What particles live inside the nucleus?
protons and neutrons
When did Roetgen receive his Noble Prize?
1901
What percent of the earth consists of 12 electrons? (test question)
95%
Describe periods and what they tell you about electrons
periods are the horizontal rows and they tell you the amount of electron shells in an atom
What is the difference between X-rays and gamma rays?
Origin - x-rays are man made
What is atomic nomenclature? (A and Z represent?)
Z- represents atomic number, number of protons and is on the bottom left size of the atomic symbol
A- represents atomic mass, number of nucleons, and is on the top left of the atomic symbol
Who discovered electrons?
JJ Thomson
What is the boiling point of water in C, F, and K?
C - 100
F - 212
K - 373
What is an ionic bond?
The transfer of electrons from one to another
Natural environmental radiation components:
- cosmic rays
- terrestrial radiation
- internally deposited radionuclides
- radon
What is the smallest part of an atom?
Electron
Who created a mini solar system model of the atom?
Bohr
List (from biggest to smallest) the powers of ten
10^12 - tera 10^9 - giga
10^6 - mega 10^ 3 - kilo
10^ -3 - mili 10^-6 - micro
10^-9 - nano
How do you find the amount of electrons per shell?
2n^2
What is the difference between Alpha radiation and Beta radiation
Alpha particles carry a positive charge, beta particles carry a negative charge, and gamma rays are neutral. An alpha particle is made up of two protons and two neutrons bound together.