C2 Atoms, Ions, And Compounds Flashcards
What’s the relative mass of a proton
1
What’s the relative mass of a neutron
1
What’s the relative mass of a electron
1/1836 or 1/2000
What’s the relative charge of a proton
1+
What’s the relative charge of a neutron
0
What’s the relative charge of a electron
1-
Define isotope
Atoms of same element with same number of electrons and protons, but different numbers of neutrons and different masses
What’s the mass number
Number of protons + number of neutrons
What’s the atomic number
Number of protons
What’s an ion
A charged atom
Define relative isotopic mass
Mass of an isotope relative to 1/12th of the mass of an atom of C-12
Define relative atomic mass
Weighted mean mass of an atom of an element relative to 1/12th of the mass of an atom of C-12
What’s a binary compound
Contains 2 elements only
What’s a polyatomic ion
An ion that contains more than 1 element bonded. together
What’s a diatomic molecule
2 of the same atoms bonded together e.g. 02,C12
What’s a formula unit
In ionic compounds, the formula worked out from the ionic charges that are used in equations
Ammonium ion
NH4+
Hydroxide ion
OH-
Nitrate ion
NO3-
Nitrite ion
NO2-
Hydrogen carbonate ion
HCO3-
Manganate(VII)(permanganate) ion
MnO4-
Carbonate ion
CO3^2-
Sulfate ion
SO4^2-