History of the Atomic Model
Who suggested that electrons are found in specific orbits like planets?
Bohr
Part of the atom with no charge (neutral)
Neutrons
The letter(s) used to represent the element are called what?
Chemical Symbol
Elements that are good conductors of electricity and heat are known as ______.
metals
The name for the electrons that are involved in bonding
valence electrons
Who thought atoms were like smooth, round spheres?
Dalton
Part of the cell that is really small and negatively charged.
Electrons
The atomic number can be found above the chemical symbol and represents how many ______ there are in that element.
protons
Elements that are dull and brittle are considered _____.
nonmetals
Ionic Bond
Who inferred that the positive charge of the atom was packed in a nucleus and named the positive particles "protons."
Rutherford
Part of the cell that is positively charged and located in the nucleus.
protons
The elements are separated into ______, as rows going across the periodic table.
periods
Elements that are shiny, ductile, and malleable are considered to be ______.
metals
What is the name of the bond between two non-metals
Covalent Bond
Who proposed the atom was like a watermelon--positive throughout with electron "seeds" floating around?
Thomson
Together the number of protons plus the number of neutrons make up the Atomic ______.
Mass
The elements are grouped according to shared characteristics, in columns, otherwise known as _____.
Groups or Families
Elements that are poor conductors of heat & electricity and gain or share electrons are ______.
nonmetals
When atoms gain or lose electrons, they become polar and they are now called what?
Ions
Which model suggests that electrons move at certain "energy levels" and not in specific orbits?
Cloud model
The name for the types of atoms that have the same number of protons but different number of neutrons.
Isotopes
The atomic _____ is the protons and neutrons added together and all the isotopes of that element averaged together. It can be found beneath the chemical symbol.
mass
Elements that have some properties that are similar to metals and nonmetals are ______.
metalloids
What are the properties of an Ionic Bond
Conductivity, High melting point, hard, brittle, crystalline shape