The smallest particle of an element that retains its identity ina chemical reaction.
What is an atom?
100
They discovered radioactivity.
Who is Marie and Pierre Curie?
100
This is one of the 2 most abundant elements in the universe.
What is carbon?
100
The electrostatic forces that hold ions together in compounds.
What is an ionic bond?
100
A substance that speeds up a a reaction.
What is a catalyst?
200
The time required for one-half of the nuclei of a radioisotope sample to decay to products.
What is half-life?
200
The three types of radiation.
What is Alpha, Beta, and Gamma?
200
The most electronegitive element on the Periodic table.
What is flourine?
200
Atoms held together by the sharing of electrons.
What is a covalent bond?
200
A chemical change in which a single compound breaks down into two or more simpler products.
What is a decompostion reaction?
300
A homogeneous mixture; consists of solutes dissolved in a solvent.
What is a solution?
300
The conversion of one element to an atom of another element.
What is transmutaion?
300
The number of protons in the nucleus of an atom of an element.
What is the atomic number?
300
The number of ions of opposite charge that surround the ion in a crystal.
What is the coordination number?
300
A chemical equation that does not indicate relative amounts of the reactants or the products.
What is a skeleton equation?
400
A portion of chemistry dealing with numerical relationships in chemical reactions; the calculations of quantities of substancesinvolved in chemical equations.
What is stoichiometry?
400
This determines the the type of decay a radioisotope with undergo.
What is the nuetron to proton ration?
400
As you move down a group ______ increases
What is atomic radii?
400
A molecule consisting of 2 of the same molecule joined by a covalent bond.
What is a diatomic molecule?
400
An ion that appears on both sides of the chemical equation but is not directly involved in the reaction.
What is a spectator ion?
500
A process used to determine the concentration of a solution in which a solution of known concentration is added to a measured amount of the solution of unknown concentration until the indicatorsignals the end point.
What is titration?
500
The two ways transmutation can occur.
What is radioactive decay and the bombardment of the nucleus?
500
He created the first Periodic Table.
Who is Dmitri Mendeleev?
500
This is a covalent bond between atoms in which electrons are shared unequally.
What is a polar bond?
500
A chemical change involving an exchange of positive ions between compounds.