All About Atoms
Atoms
Philosopher; Greek; ehhh idk, eureka?
(extra if u put where he’s from)
Democritus of Abdera
element has 1 proton
Hydrogen
Atoms with same number of protons, different mass number
(bonus- name Hydrogen-3)
Isotopes
Tritium
Subscript of Neptunium-187
(Np A#-93)
187/93 Np
Core of atom
(Bonus: name the particles inside it)
Nucleus
Protons, Neutrons
Discovered neutrons
James Chadwick (boseman😞😔🕊️🕊️🕊️)
Table is composed of mostly this
Metals
Amount of protons in atom
Atomic number
Which is more abundant: Bismuth-207, Bismuth-209
(hint: AM:208.98)
Bismuth-209
Name all 3 major subatomic particles of atoms and their charges
(credit only if every criteria is applied)
Electrons:+
Protons:-
Neutrons:Neutral
Alpha particles and gold
Rutherford, nucleus
Horizontal name, column name
(give in order, or NO CREDS)
Periods
Groups
Atomic number plus amount of neutrons
Mass number
Find the mass number of Francium
with 98 neutrons
Francium-185
Which is false?
A) Electrons re negatively charged and have a mass of 1 AMU
B) Neutrons are found in the nucleus of an atom
C) The nucleus of an atom is positively charged
D) Protons have a positive charge
Α)
Cathode ray tube
J. J. Thomson, electrons
Periodic law
Weighted average mass of an element’s isotopes
Atomic mass
15 seconds;
Period-5
Group-6A
Tellerium
All Properties of an atom from Dalton’s Theory
(Credit will only be given IF all properties are shown
1. All elements are made from atoms
2. Atoms of the same element are identical.
3. Atoms of different elements can physically mix together or chemically combine with one another.
4. Chemical rxons occur only when atoms are seperated, joined, or rearranged.
Created Modern Periodic Table
Henry Mosely
Name ALL properties of a metal
Ductile, lustrous, malleable, high conductivity
Unit of mass equal 1/12 the mass of Carbon-6
Atomic Mass Unit (amu)
Find atomic mass of Sulfur
(32/16 S)- 31.972 amu, RA: 95.002%
(33/16 S)-32.971 amu, RA: 0.76%
(34/16 S)- 33.967 amu, RA: 4.22%
(36/16 S)- 35.967 amu, RA: 0.014%
32.06