Atoms
______________ are subatomic particles with a ___________ charge and are found surrounding the nucleus.
Electrons. Negative.
Five pieces of information found on an element key
Element Name, Symbol, Atomic #, Atomic Mass, and State of Matter
The majority of the periodic table is made up of ________________.
Metals
Only valence electrons are shown in this type of diagram.
Lewis Dot Diagram
Why are the Noble Gases so happy?
They are stable elements with full outer shells (4 pairs, or 8 total electrons = Octet Rule!)
Isotopes of an element contain different numbers of this subatomic particle
Neutrons
What determines the atomic number?
Number of Protons
Another name for "column" on the periodic table is ______________.
Group.
This type of bond "pools" electrons around cations.
Metallic Bond
What is the electron dot diagram for the element Lead (Pb)? (Show work on board)
Ask teacher if correct.
________________ are found in the outermost shell of an atom.
Valence Electrons.
These subatomic particles determine the atomic mass of an element
Protons and Neutrons
An elements ________________ will tell us how many valence electrons it will have.
Group.
In an ionic bond, which type of elements are involved and which one transfers its electron(s)?
Metals and nonmetals. The metal transfers.
A __________________ is a negatively charged atom.
Anion.
An atom that is charged (not neutral) is called an
Ion
These elements do not conduct heat or electricity
Nonmetals
An elements ________________ tells us how many electron shells that atom will have.
Period
A covalent bond between one Nitrogen (N) and three hydrogen (H) forms ammonia. What would this bond look like? (draw on board)
Ask teacher if right
An element with unpaired dots in its outermost shell is considered ________________.
Unstable.
What is the atomic model for the element Phosphorous (P). (Draw on board)
Ask teacher if correct.
_____________ are elements that have properties of both metals and nonmetals and are considered _________________.
Metalloids. Semiconductors.
Halogens make bonds to form __________.
Salts
An Ionic Bond is made with one sodium (Na) atom and one bromine (Br) atom. What would this look like? (Draw on board)
Check with teacher.
Why is Helium (He) considered stable with only 2 valence electrons when the rest of its group has 8?
Helium is in period 1. Period one only allows one electron shell that can hold a maximum of 2 electrons. Helium happens to only have 2 electrons so it is complete and can not make any bonds.