unit 2-section 1 Word Scramble
|
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Question | Answer |
Atom | the smallest particle of an element that can exist alone or in combination |
Neutron | a particle that has a mass nearly equal to that of the proton but no electrical charge is present in all atomic nuclei except those of hydrogen |
Proton | a very small particle that occurs in the nucleus of every atom and has a positive charge of electricity |
Electron | a very small particle that has a negative charge of electricity and travels around the nucleus of an atom |
Ion | an atom or group of atoms that carries an electric charge |
Isotope | any of two or more species of atoms of a chemical element with the same atomic number and position in the periodic table and nearly identical chemical behavior but with differing atomic mass or mass number and different physical properties |
Atomic number | an experiemntally determined number characteristic of a chemical element that represents the number of electrons outside the nucleus and that determines the place of the element in the periodic table |
Nucleons | protons or neutrons in the atomic nucleus |
Nuclide | a species of atom charcterized by the constitution of its nucleus and hence by teh number of protons, the number of neutrons, and the energy content |
Mass number | an integer that expresses the mass of an isotope and designates the number of nucleons in the nucleus |
John Dalton | developed the Atomic theory |
JJ Thompson | discovered the electron using the Cathode Ray Tube |
Democritus | viewed matter as made of smaller particles |
Ernest Rutherford | discovered the existence of nucleus using the Gold Foil Experiment |
Neils Bohr | developed the planetary model |
James Chadwick | discovered the neutron |
Robert Millikan | discovered the electron charge and mass of an electron using the Oil Drop Experiment |
Created by:
375princess
Popular Chemistry sets