atom quiz Flashcards
What is an ion?
A charged atom or molecule.
What is an isotope?
Same elements but different amount of neutrons
Horizontal rows
Periods
Vertical columns
Groups
What does the number next to the ion symbol signify?
Number of electrons lost or gained.
Proton located
In the center of the atom/Nucleus with Neutrons
Neutron located
In the center of the nucleus w protons
Electron located
Outside the Nucleus, surrounding it.
Who found the Billiard Ball theory & contributions?
Dalton; Atoms are uncuttable and the same element = all alike
Who found the chocolate chip cookie theory & contributions?
Thomson; atoms are positively charged and have negatively charged particles scattered about.
Who found the cherry with pit & contributions?
Rutherford; Atoms have space and have a nucleus in the middle.
Who found the Solar System theory & contributions?
Bohr; Electrons orbit around the nucleus.
Who found the Cotten Ball theory & contributions?
Current Theory; Electrons don’t orbit but move at high speeds to form an electron cloud.
