Chemistry
What is the charge of a proton
Positive
What is the charge of a neutron
No charge/ neutral
What is the charge of an electron
Negative
define nucleus
Center of an atom
What is found in the nucleus?
Protons and neutrons
Define electron cloud
Area around the nucleus where electrons are located
Neutral atom
# of protons = # of electrons
Define energy level
Electrons can occupy specific energy levels around nucleus
What is Quantized energy?
Electrons can only have certain, fixed energy levels
Define ground state
Lowest energy level
Define excited state
Highest energy level
Absorption
Energy goes UP
Emission
Energy goes DOWN / emitted
N=4 to n=7 absorption or emission?
Absorption
N=12 to n=3 absorption or emission?
Emission
Continous spectrum
All wavelengths/ colors without gaps
Absorption line spectrum
Dark lines where specific wavelengths are absorbed
Emission line spectrum
bright lines at specific wave lengths
Define quantized
Limited to specific amounts or values
What is photon?
Particle of light energy; also the packet of of electromagnetic energy
What is the smallest particle of an element?
Atom
Larger energy level jump =…..?
Larger energy change
After absorbing energy what happens to atom?
Atom becomes excited
What happens when electron drops to a lower energy level?
The atom can exit a photon
What is atomic theory
Theory that all things are made of atoms