Democritus and Rutherford Questions Flashcards
the first to theorize that all matter is composed of atoms
democritus
not dividable or whole
“atomos”
who “crushed” Democritus’s ideas
Aristotle
how many questions did aristotle ask democritus
3 questions
what were the questions that aristotle asked
1.) if we were made of atoms, what holds us together?
2.) Why can’t we see atoms?
3.) Why don’t we fall down like a bag of marbles?
was democritus able to answer Aristotle’s questions?
no, so people continued to think that matter was continuous
who created the first model of the atom
thomson
who countered/ disproved the first model of the atom
Ernest Rutherford
what experiment did rutherford perform
he directed a narrow beam of alpha particles at a very thin sheet of gold
who decided that an atom is mostly empty space
rutheford
nucleus
a small region at the center of the atom
who decided that all of the positive charge is located in the nucleus
rutheford
where is the majority of the mass of an atom located
in the nucleus
a single piece of positively charged matter located in the nucleus
proton
who decided that a neutral particle was holding the protons together
rutherford
