Atomic Theory
Discovered the atom
Who is Democritus?
The meaning of "atomos"
What is "Indivisible" or "Uncut"?
The horizontal rows of a periodic table
What are Periods?
Chemical Symbol is H
What is Hydrogen?
Matter made of two or more different elements.
What is a compound?
Thompson's addition to the atom
What is an electron?
Charge of a proton
What is Positive?
The number of elements on the periodic table.
118
Chemical Symbol is K
What is Potassium?
Small compound of an entire substance
What is a Molecule?
Who killed the atom for 2000+ years?
Aristotle
Charge of an electron and neutron
What is negative and neutral?
The periodic table is organized by:
What is Atomic number?
Chemical Symbol is Au
What is Gold?
A pure substance consisting only of atoms that all have the same numbers of protons in their atomic nuclei
What is an element?
The atomic theory used today
What is Bohr's Theory?
The center of an atom
What is a nucleus?
Elements in these have the same properties.
What are groups?
What atomic number tells us about an atom.
How many protons?
Number of Atoms in this formula:
C2H5OH
What is 9?
C = 2
H = 6
O = 1
C+H+O = 2+6+1 = 9
The experiment Rutherford conducted to discover atom's empty space.
What are subatomic particles?
The periodic is mostly composed of:
What are the metals?
What is an isotope?
Number of Atoms in this formula:
(NH4)2S
What is 11?
N = 2
H = 8
S = 1
N+H+S = 2 + 8 + 1 = 11