Who was the Greek guy who proposed the idea of atoms?
Democritus
100
the ability to be hammered, pressed, or rolled out into sheets
malleability
100
What is the chemical symbol of Oxygen?
O
200
the vertical columns on the Periodic Table
groups/families
200
What is the word "atom" derived from, and what is its meaning?
the Greek word "atomos" meaning "uncuttable"
200
the ability to be pulled, stretched, or drawn into a long wire
ductility
200
the number of protons in an atom
atomic number
300
first person to begin organizing the elements
Dmitri Mendeleev
300
This person had the idea that electrons orbit the nucleus of the atom like planets.
Niels Bohr
300
the ability to conduct heat
thermal conductivity
300
The number of protons in an atom is the same as the number of __________.
electrons
400
the Periodic Table consists mainly of this type of element
metals
400
(J.J. Thomson's student)
E _ _ _ S T R _ T _ _ _ F O _ D
Ernest Rutherford
400
the ability to conduct electricity
electrical conductivity
400
Name the four pieces on information on an element's Periodic Table square.
name, chemical symbol, atomic number, atomic mass
500
Name the largest group/family on the Periodic Table and its Group #.
Transition Metals #3-12
500
This important contributor to atomic theory discovered a particle in the nucleus of an atom with no electric charge. Give the name of the scientist, where he was from, and the name of the particle he discovered.
James Chadwick; England; Neutron
500
how compact a substance is; the amount of matter compared to the volume