Atomic Theory 1
Who said all matter consists of atoms?
John Dalton
What waves have the longest wavelength, lowest frequency, least amount of energy?
Radio Waves
From right to left the atomic radius.... (increases or decreases)
increases
According to Bohr's model, when an electron moves from a higher energy level to a lower energy level, it emits energy in the form of ______.
light
John Dalton
Who discovered the electron?
JJ Thomson
What is the lowest part of a wave called?
Trough
The first ionization energy is the amount of energy needed to what?
Remove an electron
What type of waves are used in motion detectors, radar guns, cooking food, satellites and weather radars?
Microwaves
What happens to the energy of the waves as you move from radio waves to gamma rays on the electromagnetic spectrum?
The energy increases.
Who discovered the atom?
Democritus
Put Violet, Orange and Green in order from lowest to highest frequency.
Orange, Green, Violet
What element has the highest electronegativity? F, Zn, Fr or P.
How does the ionization energy change as you move down a group?
decreases
JJ Thomson's atomic model was called what?
plum pudding model
Who discovered that atoms are mostly empty space?
Ernest Rutherford
UV, X-ray, Gamma Rays
Only ________ like to lose electrons.
Metals
Niels Bohr proposed a model of the atom where electrons _____ the nucleus.
orbit
How does electronegativity change as you move across a period?
increases
Who is credited for the Uncertainty Principal?
Heisenberg
Calculate the wavelength if the Frequency of the wave is 5.0E14 Hzf.
6.0E-7 m
Put the following elements in order from smallest to largest radius. Ga, Ca, He, S, Cs
He, S, Ga, Ca, Cs
List the types of electromagnetic waves in the correct order, starting from the longest wavelength to the shortest.
Radio, Microwave, Infrared, Visible, Ultraviolet, X-ray, Gama
What is the modern term for where electrons are located?
electron cloud