They don't disappear
This number tells you the number of protons in an atom of an element?
Atomic Number
This family of elements in the periodic table only conducts heat and electricity under certain conditions?
Metalloids (Semi-conductors)
This element is the first element found in the periodic table?
Hydrogen (H)
This element is used in the formation of today beverage cans.
Aluminum (Al)
This ion will form as a result of sodium ionizing
Na1+
How do you determine how many neutrons are in an atom?
Atomic mass - atomic number (protons)= Neutrons
This family is the most reactive family of metals on the periodic table?
The Alkali Metals
This element has an atomic mass of 238.
Uranium (U)
This element is a very heavy "poor metal" and is often used as weight due to its extremely large density.
Lead (Pb)
This ion will form as a result of iodine ionizing
I1-
How do you find an element's average atomic mass?
The atomic mass can be found on the periodic table. It generally in the form of a whole number with a decimal because it is an average of every isotope found in nature.
This family on the periodic table is the most unreactive family because it has already met the octet rule.
The Noble Gases
This element is known as the "backbone of life"
Carbon (C)
This noble gas is used as a shielding gas in SMAW (shielded metal arc welding)
Argon (Ar)
This ion will form as a result of magnesium ionizing
Mg2+
These two subatomic particles that can only be found within an atom's nucleus.
Protons and Neutrons
This family on the periodic table, also known as the CHNOPS, contains carbon, hydrogen, nitrogen, oxygen, phosphorus, sulfur and what other element?
Selenium (Se)
This element reacts violently in the presence of water, but also can chemically bond to Chlorine (Cl) to form an everyday cooking ingredient.
Sodium (Na)
This element is used in the circuit boards of technology such as phones and computers mainly because of its ability to conduct electricity under certain conditions.
Silicon (Si)
This ion will form as a result of selenium ionizing
Se2-
How does the definition of the term "Valence Electron" differ from "Electron".
A valence electron is only found in the outermost energy level.
This family of nonmetals is best suited for ionic bonding with the Alkali Metals?
The Halogens
These two elements were switched by Henry Moseley when he arranged Mendeleev's periodic table by increasing atomic number.
Cobalt (Co) & Nickel (Ni)
or
Tellurium (Te) & Iodine (I)
This element found in the periodic table is found in some of the most expensive pieces of jewelry
Platinum (Pt)
This ion will form as a result of aluminum ionizing
Al3+