P+,N & -E
The electrons in the outer energy level
What are valence electrons?
A sub-atomic particle with a negative charge
What is an electron?
Tiny particles that make up all matter.
What are atoms?
A sub-atomic particle with a positive charge.
What is a proton?
A subatomic particle with no charge.
What is a neutron?
The location of protons and neutrons.
What is inside the nucleus?
An atom with a completely full outer most (valence) energy level is this.
What is nonreactive?
These are the properties of nonmetals.
What are brittleness, low boiling/melting points, dull, not ductile or malleable, poor conductors?
Found in a zigzag line on the periodic table.
What are metalloids?
The location of electrons.
What is outside the nucleus in the energy shell or orbital?
Atomic mass - Atomic number
What is the formula for finding the neutrons of an atom?
Elements in group 1 have only 1 valence electron and are considered this.
What are elements that are considered extremely reactive?
Rows on the periodic table
What are periods?
Columns on a periodic table
What are groups?
Elements in the same group share this.
What are the same number of valence electrons
The atomic number tells you
What is the number of protons (and electrons) an atom of an element has?
These are the properties of metals.
What are conductivity, high melting points, most are solids at room temperature, shiny, ductile, and malleable?
The majority of the elements on the periodic table are this.
What are metals?
These are the properties of metalloids.
What are metallic luster, brittle and semi-conductor?
The three classes of elements are these.
What are metals, metalloids, and nonmetals?
The Octet Rule or rule of 8
What is the maximum number of electrons, an orbital, or energy shell, can hold? (except the first which is 2)
The modern periodic table is organized according to this.
What are by increasing atomic number?
Most metals at room temperature are this.
What are solids?
The reactivity of an element is dependent on this.
What is the ability of an atom to either completely fill or empty its outer most energy level?
Located on the right side of the zigzag line.
What are nonmetals?