Atomic Theory
What are the names and charges of the three subatomic particles?
Proton (+), Neutron (no charge), Electron (-)
What does the atomic number at the topic of a periodic cell designate?
The number of protons in an atom
What are the electrons on the outermost shell called?
Valence electrons
What are the three major classes of elements?
Metals, Nonmetals, and Metalloids
What is the name for an atom that has a positive or negative charge?
Ion
What is the center of the atom called?
Nucleus
What is the name of the columns in a periodic table?
Groups or Families
What is the maximum number of electrons that can be on an atom’s outermost shell?
Eight
Which element is the “friendliest” element?
Hydrogen
What type of bonds are formed between metals and nonmetals?
Ionic Bonds
Which subatomic particles are measured to determine an atom’s atomic mass?
Protons and Neutrons
What is the name of the rows in a periodic table?
Periods
Which group of elements is considered to have a complete outer shell?
Noble Gases
What is the name for an element that can conduct electricity some of the time?
Semiconductor
What type of bonds are formed between nonmetals and nonmetals?
Covalent Bonds
What is the name for a variant of an element?
Isotope
What is a type of element that is prone to decay called?
Radioactive
Which diagram portrays an atom with its atomic symbol and its outermost electrons?
Electron Dot Diagram
What property of metals describes a metal’s ability to be flattened into sheets?
Malleable
How might one describe a compound that has a positive side and negative side?
Polar
What does the Atomic Mass of an element represent?
What is the name of one of the rows that is separated out from the rest of the periodic table?
Lanthanides or Actinides
Which diagram portrays an atom with a nucleus and all of its shells?
Bohr Model
What property of metals describes a metal’s ability to be pulled into wires?
Ductile
The ability for an atom to bond with other atoms is called its ____________.
Reactivity