chapter 2 atoms, ions and compounds Flashcards
1
Q
what is the mass of an electron relative to a proton?
A
1/1836
2
Q
what is the definition of relative atomic mass?
A
the weighted mean mass of an atom of an element compared to 1/12 the mas of carbon-12
3
Q
what is the definition of relative isotopic mass?
A
the mass of an atom of an isotope compared with 1/12 the mass of carbon-12
4
Q
what are the names for +/- ions?
A
+=cations/-=anions
5
Q
what are polyatomic ions?
A
ions containing more than one element bonded together e.g. OH^-/SO4^2-
6
Q
How do you write sulfure and phosphorus?
A
P4 and S8 (simplified to just S in equations)
