ch 4 5 6 test like hello where is the reasoning?? Flashcards
Atomic Number
Number of protons duh payton
Atomic Mass/ Mass number
Protons plus Neutrons
Weights
Protons and Neutrons are the heaviest and they weigh the same
Electrons are the lightest
Law of Conservation of mass
Matter cannot be destroyed nor created.
Ex: When wood burns, the mass or soot, ashes etc equal the original mass
Law of proportions chemistry
A given chemistry compound always contains the same elements in the exact same proportion by mass
Law of Multiple Proportions
When two elements form more than one compound BASICALLY ALWAYS A RATIO
This ONLY APPLIES TO COMPOUNDS OF THE SAVE ELEMENT OKAY PAYTON? DONT GET THIS WRONG
What did Dalton do?
Dalton created the atomic theory.
Atomic theory:
- All mater is composed of small particles called atoms
- Atoms of one element are different from that of any other element
- Atoms of the different elements can chemically or physically mix together
- Chemical reactions occur when atoms are separated from each other, joined, or rearranged in different combinations. Atoms of one element are never changed into atoms of another element as a result of a chemical reaction.
- First to show that atoms form compounds when they are combined
What did JJ Thompson do
- Created the Cathode ray. Shot electric particles with a positive plate on top which attracted it.
- This showed that there were negative particles which he called Corpusles which later were named electrons by another scientist
- Plum Pudding model
Plum Pudding model
This model was proposed by Jj thompson
It shows negatively charged particles in a positive charged seas
This one has no nucleus
What did Ernest Rutherford
- Gold Foil
- Basically shot alpha particles at something and it reflected which gave the identity of a nucleus
- Atoms consist of a postively charged nuecleus
- Electrons orbit the nucleus
- Nucleus contains most of the mass
What did Bohr do
He made a model with a nucleus with 3 rings, these electrons orbit the nucleus in different energy levels.
Radiation is absorbed or emitted when electrons
State the charge, location, and mass of the three particles
Neutron and Protons weigh 1.67 x 10^-24
Electrons located electron cloud, which is located around the nucleus. and it weights 9.11 x 10^-28
Isotopes
Anything with a different amount of Neutrons, and Atomic mass cannot be the same
Cation
Positive lose electrons
Anions
Negative gain electrons
How to calculate the average atomic mass.
Mass x percent + mass of perecent + mass of percent
Eletromagnetic waves of color
Red Orange Yellow Green blue indigo purple violet
(Longest wavelengths to shortest)
(Least energy to most)
Electromagnetic waves of
Radio, Radar, Microwave, Infared, Visible, ultraviolet, X rays, gamma.
(Longest to shortest)
(Least energy to most)
Relationshio between wavelength and Frequency
W= A
F= V
Inversely proportionate (Pay u prob dont know this once so study if biatch)
Excited State of Electrons
Don’t follow the rule, skip to the next state. Always higher energy
Basically just skip elements sorta (Pay prob wont understand this)
Ground state
Lowest energy state, does not skip follows through
What are the properties of the four quantum
N- Principle
L- Angular
Me - Magnetic
Ms - Spin
What are the shapes for the orbitals
S - Sphere
P - Dumbbell
D - Flower
F - Very complicated shape
Electron Configuration
No box
