History of the Atom
Whose atomic theory was called the Billiard ball model?
Dalton
Who was the first scientist(s) to do experiements?
alchemists
What are groups in the periodic table?
columns
Where are the metal located
left of staircase
What is the charge of a proton?
Neutron?
Electron?
(100 points each)
positive
neutral
negative
Who discovered the electron and came up with the "plum pudding" model?
Thomson
Who believe that all things are made of Earth, air, water and fire?
Empedocles
What are periods in the periodic table?
rows
Where are non-metals located?
Right of staircase
What is the mass of a proton?
Neutron?
Electron?
(200 points each - must include units)
1 amu
1amu
0 amu
Who first discovered that atoms were mostly empty space with a positive nucleus in the center?
Rutherford
Who was the first person to state that matter was made of “atomos” – indivisible particles?
Democritus
The last digit in the group number is equal to ...
the number of valence electrons
Where are metalloids located?
around the staircase
What means it can be made into a thin wire?
ductility
Who came up with the "Planetary model"
Bohr
Who discovered over 23 different elements?
Antoine La Voisier
The period number is equal to ...
the number of orbitals or rings
What is the name of group number 1?
Alkali Metals
What means it can be formed into a thin sheet?
Malleability
Which theory states that it is impossible to state the exact location of an electron?
Quantum theory
Which subatomic particle are found IN the nucleus?
Protons and neutrons
Chalogens are which group number?
17
Alkaline Earth metals are which group?
2
What are hydro-carbons made of? (250)
What is the most reactive group of elements? (250)
a) hydrogen and carbon
b) alkali metals - because they only have one electron to give away