Quiz 1 Flashcards
What is Dalton’s atomic theory?
Elements are composed of atoms
All atoms of an element are the same
Compounds are composed of multiple elements
Chemical reactions only involve separation, combination and rearrangement of atoms
Which way do groups go in the periodic table?
Groups go up and down
Which way do periods go in the periodic table?
Periods go side to side
How is the atomic number found?
The atomic number is equal to the number of protons
Dictates placement in the periodic table
How is the mass number found?
The mass number is equal to the number of protons and nuetrons
What are the two types of ions and what are their charges?
Cation - Positive charge
Anion - Negative charge
What is electromagnetic Radiation?
A wavelength and periodic motion
What is the equation for speed of light?
Speed of light = (Wavelength)(Frequency)
What is Planck’s constant?
6.63 X 10^-34
What is the equation for energy?
E = HV H = Planck's constant V = Frequency
What is the photoelectric effect?
EMR shining on metal will cause electrons to be ejected
What is Rydberg’s Equation?
1 / (Wavelength) = R ( (1/n2) - (1/n2))
What did Heisenburg say?
Can not know momentum and position of particle at the same time
What are the quantum numbers?
N - Distance from nucleus - (1,2,3……)
L - Shape - (0,1,2….. n-1)
ML - Orientation - (L, L-1, …. -L)
MS - Electron Spin - (+ .5 or -.5)
