Chemistry Terms - Statistics

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The average score is 8 of 39

Answer Stats

Definition	Term	% Correct
The smallest unit of matter, discovered by Democritus.	Atom	96%
The number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table.	Atomic Number	87%
An atom or molecule with a net electric charge due to the loss or gain of one or more electrons.	Ion	78%
The number of times a point on a wave passes a fixed reference point in one second.	Frequency	55%
It is approximately equivalent to the number of protons and neutrons in the atom.	Atomic Mass	54%
The distance between any given point and the same point in the next wave cycle.	Wavelength	46%
She discovered radium and polonium, and made huge contribution to finding treatments for cancer.	Marie Curie	34%
This is a reaction in which the nucleus of an atom splits into two or more smaller nuclei.	Nuclear Fission	31%
This is the process by which two light atomic nuclei combine to form a single heavier one while releasing massive amounts of energy.	Nuclear Fusion	31%
He proposed a theory for the hydrogen atom.	Neils Bohr	28%
A fundamental physical constant that is the speed at which electromagnetic radiation travels in a vacuum and that has a value of 299,792,458 meters per second.	Speed of Light	27%
Energy that moves from one place to another in a form that can be described as waves or particles.	Radiation	25%
While studying the molecular theory of liquids, he tried to explain the motion of particles through Brownian motion. This theory explains the random movement of particles in a fluid or gas.	Albert Einstein	23%
A weapon with great explosive power that results from the sudden release of energy upon the splitting, or fission, of the nuclei of a heavy element such as plutonium or uranium.	Atomic Bomb	23%
A great Greek philosopher that came up with the concept of atoms.	Democritus	23%
This is the quantitative property that is transferred to a body or to a physical system, recognizable in the performance of work and in the form of heat and light.	Energy	23%
He demonstrated that there were at least two distinct types of radiation: alpha radiation and beta radiation.	Ernest Rutherford	20%
This rule states that every orbital in a sub-shell is singly occupied with one electron before any one orbital is doubly occupied and all electrons in singly occupied orbitals have the same spin.	Hund's Rule	18%
His atomic theory suggested that all matter was comprised of indivisible and indestructible atoms with distinct masses and properties.	John Dalton	14%
The smallest and the fundamental particle of electromagnetic radiation.	Photons	14%
He formulated a type of quantum mechanics based on matrices.	Werner Heisenberg	12%
He developed a powerful model of the atom.	Erwin Schrodinger	11%
This is a function describing the location and wave-like behavior of an electron in an atom.	Orbitals	11%
He discovered the electron and then went on to propose a model for the structure of the atom.	J.J. Thomson	8%
This principle states that no two electrons in the same atom can have identical values for all four of their quantum numbers.	Pauli Exclusion Principle	8%
Fixed distances from the nucleus of an atom where electrons may be found.	Energy levels	5%
He introduced the idea that particles, such as electrons, could be described not only as particles but also as waves.	Louis Debroglie	5%
He proved the existence of neutrons – elementary particles devoid of any electrical charge.	James Chadwick	4%
This rule states that in the ground state of an atom or ion, electrons first fill sub-shells of the lowest available energy, then fill sub-shells of higher energy	Afbau Principle	2%
The energy that is released through a nuclear reaction or radioactive decay process.	Atomic Energy	2%
He devised a concept of particle repulsion that is indirectly related to the hydrophobic effect.	Benjamin Franklin	2%
In this experiment, electrons are accelerated from one end of the tube to the other using an electric field.	CRT experiment	2%
Energies associated with electrons	Energy sublevels	2%
His work established the concept of atomic number and helped reveal the structure of the atom.	Henry Moseley	2%
He helped discover the radioactive element protactinium.	Leis Meitner	2%
A series of colored lines with dark spaces in between.	Line Spectra	2%
This is the property exhibited by certain types of matter of emitting energy and subatomic particles spontaneously.	Radioactivty	2%
He succeeded in precisely determining the magnitude of the electron's charge.	Robert Milikan	2%
He is credited with discovering the element thallium, announced in 1861, with the help of spectroscopy.	William Crooke	1%

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