The Guys behind it all
What is the meaning of the word atoms?
What is : uncut or indivisible
Neutron is _______ charged
What is : uncharged/ neutral
This is how the atoms were arranged on the original periodic table.
What is in order of increasing atomic mass?
What two particles make up the net charge of an atom nucleus?
What is : protons and electrons
What particle lives in the rings in the Bohr diagram?
Electrons
What structure did Rutherford discover was in an atom after his gold foil experiment?
What is : A nucleus
The positively charged particle
What is : A proton
Electrons are _____ charged and have a mass that is ____________ amu.
What is : negatively, close to zero
Families of elements are grouped together by ________.
What is common characteristics?
How many electrons can the first three energy level all together?
What is : 18 electrons
How many electrons are present in a neutral Rubidium atom?
37
What particle did J.J. Thomson discover?
What is : electron
Isotopes of the same element have the same number of protons but different number of _________
What is : neutrons
The current atomic theory includes the ________ model of electrons.
What is : electron cloud
The number of energy levels that Barium has.
What is six?
What do excited electrons emit when they fall back to their ground state?
What is energy/light?
Describe how to draw the electron dot diagram for Phosphorus.
Capital P, dot on the top, then below, then left, then right, then top
The plums in Thomson's plum-pudding model of the atom represent:
What is :electrons
In an atom, which has the least mass? A: nucleus B: proton C: neutron D: electron
What is : electron
Trends of the characteristics of elements across the periodic table.
What is : periodicity
It is Mg.
What is the atomic symbol for Magnesium?
What is one big difference between orbits and orbitals?
Orbits are 2D and orbitals are 3D
What components are included in an isotope symbol?
atomic symbol, atomic number, net charge, mass number
What did Bohr, Democritus, Thomson, Dalton, and Rutherford all have in common? A: They each identified the electromagnetic force of atoms B: They each identified new electron clouds C: They each developed ideas about atoms D: They each conducted experiments with ions
What is : C: They each developed ideas about atoms
Describe the difference between atomic number and mass number *Multiple sentence answer*
What is : The atomic number is the number of proton in an atom. The Mass number is the sum of the number of protons and neutrons in an atom of a particular isotope
The most dense structure in an atom called _______ is made up of ______ and ______.
What is : nucleus, protons, and neutrons
What are the most reactive metals called? what group are they in?
What are the most stable elements called? What group are they in?
What are the Alkali metals in group 1.
What are the Noble gases in group 18.
What is the most reactive group of nonmetals?
Halogens/Group 17
What is the difference between an isotope notation and an isotope symbol?