Atoms
Atoms are fundamental ________ ______ of matter
What are building blocks?
The experiment that discovered electrons
What is Thomson's cathode ray experiment?
Bohr assumed electrons moved this way
What is a circular orbit?
The two scientists who independently discovered how elements should be grouped
Who are Mendeleev and Meyer?
This part of the element is identical
What is an atom?
Original model of an atom. Consisted of a positive sphere with negative electrons embedded
What is the plum pudding model?
Bohr model only works for this element
What is hydrogen?
Mendeleev's table is based on this
What is atomic mass?
Atoms can never do this
What is change into other atoms?
The experiment that proved Thomson was wrong
What is Rutherford's gold foil experiment?
Electrons exist in these
What are discrete energy levels?
The scientist officially credited with determining periodic trends
Who is Mendeleev?
Discoverer of atoms in the 19th century
Who is John Dalton?
The area that holds most of an atom's mass
What is the nucleus?
Classical physics states that this would happen to the electron in Bohr's model
What is fall into the nucleus?
Moseley developed the concept of atomic number. This was then considered the basis for periodic property
What is the number of protons?
These are formed when atoms of elements combine
What are compounds?
This makes up most of the volume in an atom
What is empty space?
This is involved in the transition of an electron to another level
What is energy?
Mendeleev correctly predicted the elements gallium and germanium as well as this
What is their similarity to aluminum and silicon's chemical properties?