History of Chemistry
An object that would represent the size of an atomic nucleus if an atom was the size of a large stadium
What is a marble/golf ball/tennis ball/bb
This chemist found that mass is neither lost nor gained in a reaction.
Who is Antoine Lavoisier?
The material alchemists sought to create by transmuting lead and other base metals
What is gold?
A unit of measurement, best suited to describe the masses of individual molecules and atoms.
What are Atomic Mass Units?
What are Daltons?
He cemented his place in history by discovering the Law of Definite Proportions.
Who is Josef Proust
The atomic number of Uranium-238
What is 92?
A superstition based system that evolved into modern chemistry.
What is alchemy?
They are charge-less, massive particles, located within the nucleus of an atom
What are neutrons?
1/12 the mass of of a Carbon-12 atom
What is the definition of the Atomic Mass Unit or Dalton?
A student of Leucippus, he was one of the first "Atomists"
Who is Democritis?
This element, with an atomic number of 55 melts at a relatively low temperature
What is Cesium?
The creator of the "plum pudding" model of the atom, he demonstrated the existence of tiny, negatively charged particles.
Who is JJ Thomson
These particles are negatively charged and are found outside the nucleus.
What are electrons?
A neutron has this atomic mass.
What is ~1 AMU?
This chemist pioneered an entire field by discovering and isolating a new element from the tailings of a silver mine.
Who is Marie Curie?
This number of what particle gives Hydrogen an atomic number of 1
What is 1 proton?
Aristotle taught about these four elements
What are Earth, Fire, Air, and Water?
This model of the atom shows negatively charged particles orbiting a positive center at different energy levels.
What is the Bohr Model
An isotope of cesium with eighty-two neutrons has this mass
What is 137 AMU?
What is 137 Daltons?
This chemist, surprised at the outcome of an experiment, likened it to "firing a cannon ball at tissue paper and having the cannon ball bounce back".
Who is Ernest Rutherford?
These are particles that can determine the net charge of an atom or ion.
What are electrons?