chemical species Flashcards
what is an element?
an element is a substance that cannot be broken down into simpler substances and where all the atoms have the same number of protons
what is a compound?
two or more different atoms or ions strongly bonded together
what are the 4 type of chemical species?
- atoms
- ions
- molecules
- molecular ions
what is a chemical species?
any single, atom, molecule, ion or molecular ion
what is a simple molecule?
a few non-metal atoms joined by covalent bonds
what is molecular formula?
the number of atoms of each element within a simple molecule
what are compounds?
two or more elements chemically bonded together
what are ions?
species with a positive or negative charge
what are molecular ions?
charged species that contain two or more non-metal elements
what do roman numerals indicate?
the positive charge of a named metal ion
what are anions and cations?
negative and positive ions
