Show:
Formulas & Valences
Bonds
Ionic Bonds & Covalent Bonds
Chemical Equations & Compounds
Reactions & Products
100
The electrons in the outermost energy level of an atom
What are a valence electrons?
100
A neutral group of atoms held together by covalent bonds
What is a molecule?
100
The charged particles that form when one or more valence electrons transfer from one atom to another
What is an ion?
100
This number tell you how many atoms of an element are present in the compound.
What is a subscript?
100
The process of combining of elements to form new substances
What is chemical bonding
200
The formula for dinitrogen tetraoxide
What is N2O4?
200
The number of sodium & chlorine atoms in one ionic compound of salt
What is one sodium & one chlorine?
200
The type of bond that forms between oppositely charged ions.
What is an ionic bond?
200
A shorthand description of a chemical reaction using chemical formulas and symbols.
What is a chemical equasion?
200
The kind of bond that would occur if gold and silver were combined
What is a metallic bond
300
The prefixes for 7 and 5
What are hepta and penta?
300
The name of the group of elements that do not form bonds very often because their outer shell of electrons is considered full.
What are the noble gases? or What are helium, neon, argon, krypton, Xenon, radon, & Ununoclium?
300
The number of hydrogen atoms in one molecule of methane (CH4)
What is 4 hydrogen atoms?
300
2(H2O2) > 2H2O + O2
What is the equation for the decomposition of hydrogen peroxide?
300
What the starting materials in a chemical reaction are called.
What are reactants?
400
The valence for a sulfur atom and an oxygen atom
What is -2?
400
Hydrogen, nitrogen oxygen, fluorine, chlorine, bromine, and iodine are a special group of elements
What are the seven diatomic elements?
400
The number of oxygen atoms in the following compound Ca(NO3)2
What is 6 oxygen atoms?
400
The type of equation that has the number of atoms of each element in the reactants equal to the number of atoms of each element in the product
What is a balanced equation?
400
This sign separates the reactants from the products.
What is an arrow?
500
The chemical formula for a glucose molecule
What is C6H12O6?
500
The type of bond formed between bromine and sodium.
What is an ionic bond?
500
The formula for iron oxide
What is Fe2O3?
500
These numbers are used to balance an equation because they can be changed without changing the substance to a different substance.
What are coefficients?
500
(Double Points!!!) A written, balanced equation for the reaction of zinc with hydrochloric acid to produce zinc chloride and hydrogen.
What is Zn + 2HCl --> ZnCl2 + H2