They don't disappear
We Are Family
Element I.D.
Application
Ions
100

This number tells you the number of protons in an atom of an element?

Atomic Number

100

This family of elements in the periodic table only conducts heat and electricity under certain conditions?

Metalloids (Semi-conductors) 

100

This element is the first element found in the periodic table?

Hydrogen (H)

100

This element is used in the formation of today beverage cans.

Aluminum (Al)

100

This ion will form as a result of sodium ionizing

Na1+

200

How do you determine how many neutrons are in an atom?

Atomic mass - atomic number (protons)= Neutrons

200

This family is the most reactive family of metals on the periodic table?

The Alkali Metals

200

This element has an atomic mass of 238.

Uranium (U)

200

This element is a very heavy "poor metal" and is often used as weight due to its extremely large density. 

Lead (Pb)

200

This ion will form as a result of iodine ionizing

I1-

300

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. 

300

This family on the periodic table is the most unreactive family because it has already met the octet rule.

The Noble Gases

300

This element is known as the "backbone of life"

Carbon (C)

300

This noble gas is used as a shielding gas in SMAW (shielded metal arc welding)

Argon (Ar)

300

This ion will form as a result of magnesium ionizing

Mg2+

400

These two subatomic particles that can only be found within an atom's nucleus.

Protons and Neutrons

400

This family on the periodic table, also known as the CHNOPS, contains carbon, hydrogen, nitrogen, oxygen, phosphorus, sulfur and what other element?

Selenium (Se)

400

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)

400

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)

400

This ion will form as a result of selenium ionizing

Se2-

500

How does the definition of the term "Valence Electron" differ from "Electron".

A valence electron is only found in the outermost energy level.

500

This family of nonmetals is best suited for ionic bonding with the Alkali Metals?

The Halogens

500

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)

500

This element found in the periodic table is found in some of the most expensive pieces of jewelry

Platinum (Pt)

500

This ion will form as a result of aluminum ionizing

Al3+