1. Formulas, Equations And Amounts Of Substance Flashcards
(49 cards)
Define element
A substance that consists of only one type of atom and can’t be broken down into anything simpler by chemical means
Define compound
A substance that consists of two or more elements chemically combined
Define mixture
Consists of two or more substances that are easy to separate
Define molecule
A particle that consists of two or more atoms chemically bonded together
Define diatomic molecules
Two atoms covalently bonded in a molecule
Name the diatomic elements
Hydrogen, oxygen, nitrogen, fluorine, chlorine, iodine, bromine
Define molecular ion
2 or more atoms covalently bonded together with an overall charge
Define monatomic
Consists of one atom eg noble gases exist as individual atoms
Define isotope
Atoms with the same atomic number but a different mass number (same number of protons, different number of neutrons) eg Cl-35, Cl-37
Define atomic number
Number of protons in the nucleus of an atom
Define mass number
Total number of protons and neutrons in the nucleus of an atom
Define allotrope
Different forms of the same element in the same physical state eg diamond and graphite
Define melting point
The temp at which a solid is changed to a liquid
Define mole
Amount of a substance that contains the Avogadro constant of atoms/molecules/ions
Define boiling point
The temp at which a liquid is changed to a gas
Define molar mass
The mass of one mole of a substance
Define RAM/RMM/RFM/RIM
the average (weighted mean) mass of an atom/molecule/formula unit/isotope relative to one twelfth of the mass of an atom of carbon 12
What charge does the copper (II) ion have?
2+
What charge does the iron (II) ion have?
2+
What charge does the iron (III) ion have?
3+
What charge does the zinc ion have?
2+
What charge does the silver ion have?
2+
What charge does the lead (II) ion have?
2+
What charge does the lead (IV) ion have?
4+
