Chemistry V2 Flashcards
Isotope
Same # of protons, but different # of neutrons
Neutron
Subtract atomic mass by atomic number. the only thing that changes, while protons and neutrons remain the same number.
Ion
same # of protons but different # of electrons
Anion
Negatively charged ion
Cation
Positively Charged Ion
Empirical Formula
Smallest Whole # ratio of a compound
Ionic Bond
Non-Metal + Metal
Covalent Bond
Non-Metal + Non-metal
Synthesis
Two or more Reactions combine to make 1 new product
A + B —> AB
Decomposition
A single reactant break down to form 2 or more products
AB —–> A + B
Single-Replacement
A single element replaces a similar element of an adjacent reactant compound
AB + C —–> AC + B
Double-Replacement
Two ionic compounds exchange ions, producing 2 new ionic compounds.
AB + CD —> AD + CB
Combustion Reaction
A single element or compound combines with oxygen gas releasing energy. This rapid oxidation is called burning.
Thomson
Cathode Ray Tube experiment helped discover electrons.
Half-Life
The amount of time for half the atoms in a sample to decay
