The systematic study of the elements and their compounds.
What is descriptive chemistry?
100
When hydrogen loses an electron and becomes a cation, it is called this.
What is the hydrogen ion?
100
This is the outer electrong configuration for the noble gases.
What is ns2np6?
100
This is the outer electron configuration of the halogens.
What is ns2np5?
100
This is the outer electron configuration of the chalcogens.
What is ns2np4?
200
These 2 periodic properties increase from left to right across the periodic table.
What is Ionization Energy and Electronegativity?
200
When hydrogen gains and electron and becomes an anion, it is called this.
What is the hydride ion?
200
This is the form in which all noble gases appear in because of their unreactivity.
What is monoatomic?
200
This is the most electronegative element and only has oxidation states of -1 and 0.
What is fluorine?
200
This element has two allotropes: one protects us against harmful UV rays and is toxic while the other is necessary for metabolic processes in living organisms. Name the two allotropes.
What is molecular oxygen and ozone?
300
This happens to atomic radius as you go from top to bottom in a family of the periodic table.
What is decreases?
300
These are the three isotopes of hydrogen.
What is protium, deuterium, and tritium?
300
This is the third most abundant atmospheric gas.
What is Argon?
300
This element is used to sterilize water and has oxidation states of -1 -> +7
What is chlorine?
300
There are two ways to produce molecular oxygen. Name 1 of them.
What is distillation of air or heating of potassium chlorate?
400
This is the second most abundant element in the earth's crust.
What is Silicon?
400
There are three ways that can be used to produce hydrogen. Name two.
What is the reaction of a strong metal + strong acid; reaction of methane + steam; electrolysis of water?
400
This is another name for the noble gases.
What is inert gases?
400
This element is a red-brown liquid in its elemental form.
What is bromine?
400
This is the oxidation state of oxygen in peroxides.
What is -1?
500
This is the third most abundant element in the earth's crust.
What is Aluminum?
500
This is the name of a reaction that generates ammonia from nitrogen and hydrogen.
What is the Haber process?
500
These two noble gases have been found to react with fluorine and oxygen.
What is Xe and Kr?
500
This element is a purple-black solid in it elemental form and is used to prevent goiders.
What is iodine?
500
This is the oxidation state of oxygen in superoxides.