Each Element Has...
This thing is a representative for each element to keep us from writing out elements' full names all the time. The first letter is always capitalized.
(Element) Symbol
Protons & electrons in a single, unbonded atom can be found using the ________ number.
atomic
If an atom has 5 protons and 8 electrons, what is its charge?
-3
What is the name of the ionic compound NaCl?
Sodium Chloride
(metal is just its normal name, nonmetal's ending changes to -ide)
mass = protons + neutrons
OR
mass - protons = neutrons
If a neutral atom has 20 electrons, but it loses two electrons, what is its charge?
+2
What is the name of the ionic compound Li3N?
Lithium Nitride
(metal is just its normal name, nonmetal's ending changes to -ide, how many of each atom doesn't matter)
This number that goes in order from 1 to 118 in each corresponding element tells you how many protons are in one atom of each element.
atomic number
How many protons & electrons would you find in a single atom of Boron?
5 of each
If Potassium (K) were to form an ionic bond with a nonmetal, what would its new charge be?
+1
A single atom of Potassium has 19 protons and 19 electrons. However, it wants to get rid of one electron to have a full outer shell. When it gives one away, it has 19 protons and 18 electrons, which means its charge is +1.
What is the chemical symbol for the ionic compound Beryllium Chloride?
BeCl2
This number that is rarely a whole number tells you the average mass of all known isotopes of each element.
Mass Number
How many neutrons would you find in an atom of Carbon-14?
8 neutrons
If Nitrogen were to form an ionic bond, what would its charge be?
-3
Nitrogen wants three extra electrons, so it gains three extra negatives. While a single atom of Nitrogen has 7 positive protons and 7 negative electrons, when it bonds with a metal, it has 7 protons and 10 electrons.
What is the chemical symbol for the ionic compound Sodium Oxide?
Na2O