Chapter 4 Chemistry test

Crest

highest point

Trough

lowest point

Amplitude

max distance from resting position to crest/trough

Wavelength

distance between 2 points

Frequency + Wavelength

inverse relationship

Frequency + Energy

direct relationship

High energy spectrum

violet

high energy invisible radiation

UV or x-ray

highest frequencies

violet

5 Atomic models in order

Dalton, Thompson, Rutherford, Bohr, Quantem

Rutherford

Gold foil

thompson

cathode ray

bohr

spectrum

quantem

cloud

quantem

uncertain

quantem

probability

dalton

billiard ball model

thompson

plum pudding model

thompson

discovered first sub atomic particle

bohr

orbits

quantem

heinsburg

quantem

shroedinger

bohr

planetary model

Fireworks

colors are caused by elements as we saw in class. Mg-bright red, Sr- red color

Continuous spectrum

rainbow all colors e.g sunlight/stars

Bright light spectrum

individual lights of only some colors separated by darkness e.g neon sign

Main idea of particle article

The early belief that atoms were made of just simple components was proven false by the discovery of subatomic particles

Where is the Fermilab

Illinois

Quark

makes up neutrons + protons

Higgs field

made of higgs bosons

Higgs bosons

interactions with other particles give these particles mass

Excited electron state

higher energy state + absorbs energy

Ground state electron

lowest possible energy state of electron

What causes an electron to become excited?

absorbtion of external energy

What is observed when electrons return to ground state?

releases energy - quantem theory

dual

having 2 parts

wave particle duality of electrons

electron isn’t just a hard billiard ball/smooth classical wave, but instead a quantum entity that has both particle like and wave like properties by how you observe it

wave particle duality of light

light does not behave as strictly as a continuous wave/localized particle, has both particles

Prism

device that separates light into different colors (wavelength)

Because pickles are pickled in salt water, the electricity excited the electrons in the sodium of the salt; when electrons return to their ground state they emit the characteristic color of sodium- yellow orange

electric pickle

Where is LHC and what does it do?

CERN, Switzerland/france border smashes protons and ions together at the speed of light