General Inorganic Chemistry Flashcards
Elements are composed of tiny indivisible particles called
Atoms
Atoms of different elements are —
different; however, atoms of a given element are of the same size, —, — and chemical properties
Chemically
Shape
Mass
A chemical reaction only involves —, —, or — of atoms
Separation
Combination
Rearrangement
He said that elements are composed of tiny indivisible particles called atoms.
John Dalton
It states that a pure compound is made up of elements in the same proportion by mass
Law of Definite Proportions
The Law of Definite Proportions is stated by
Joseph Louis Proust
The Cathode Ray Tube is also known as
The Geissler Tube
The Cathode Ray Tube or the Geissler Tube experiment is developed by
Sir William Crookes
Heinrich Geissler
It is a glass tube with two metal plates connected to a high-voltage source which emitted a ray drawn from the negative plate towards the positive plate. The ray emitted has the same nature regardless of material of construction of the glass tube, electrode and the gas used.
Cathode Ray Tube
He determined the ratio of the electric charge to the mass of an electron to be -1.76x10^8 coulomb/gram
Joseph John Thompson
He determined the charge of an electron to be -1.60x10^-19 coulomb
Robert Andrews Millikan
He discovered the X-rays, which penetrated matter, darkened unexposed photographic plates and caused metals to emit unusual rays
Wilhelm Konrad Roentgen
He d the radioactivity in Uranium
Antoine Henri Becquerel
She discovered radioactivity in uranium and polonium
Mary’s Slodowska Curie
He performed the gold foil experiment wherein a thin foil of gold was bombarded with alpha particles
Ernest Rutherford
He generalized that most of the atom is an empty space and the positive charge of an atom is concentrated in the nucleus
Ernest Rutherford
The positively charged particles in the nucleus that carried the same quantity of the charges as an electron
Proton
The mass of proton
1.6752x10^-24 grams
He discovered neutron by bombarding beryllium atom with alpha particles producing an electrically neutral particle having a mass slightly greater than that of a proton
James Chadwick
It is the number of portions in the nucleus of an atom. An atom is electrically neutral where the number of protons is equal to the number of electrons
Atomic number
It is the total number of protons and neutrons in the nucleus of an atom
Mass number
These are atoms that have the same atomic number but different mass number
Isotopes
The weighted average of the atomic masses of the isotopes based on their percentage abundance
Average atomic mass
(n) pertains to the average distance of the electron from the nucleus in a particular orbital
Principal Quantum Number