Atomic History
The word "atomos" means what three things?
Pure, Uncut, & Indivisible
What is the name of the positively charged particle in the nucleus?
Proton
John Dalton published his first modern atomic theory in what year?
1803
What do elements in the same group have in common?
Reactivity
A variation of an element where the neutrons are out of ratio is called a what?
Isotope
Boyle & Lavoisier created laws for what two things?
Mass & Gas
Electron
Dalton stated that matter could not be _______ or _________ across reactions?
Created or Destroyed
What does the number at the top left of the element square mean?
Atomic Number (how many protons)
A variation of an element where the electrons are out of ratio is called a what?
Ion
Middle Age Alchemy had the goal to what?
Purify the Soul
The nucleus is made of what two particles?
Proton & Neutron
Dalton stated that all matter was made of what?
Indivisible Atoms
What does the number in the top right of the elemental square mean?
Average Atomic Mass
If an element has +1 electron in its shells it is likely to ______ an electron.
GIVE
Who claimed the first four elements were earth, wind, fire, and air?
Aristotle
Which particle is responsible for interaction and relationships?
Electrons
Compounds form in what?
Fixed Ratios
What do elements in the same period have in common?
Same number of electron shells
If an element has -1 electron in its outer shell it is likely to ________ an electron.
TAKE
Who discovered the electron?
JJ Thompson
Which particle is responsible for the atomic number of an element?
Proton
Atoms of the same element are identical in what ways?
Chemical Properties
Why do periods 4-7 have 18 elements while 2-3 have 8?
Electron Shell Capacity
Noble Gases