Atoms and Isotopes Flashcards
What letter denotes atomic number?
The letter Z
What does atomic number tell us?
The number of protons
What letter denotes mass number?
The letter A
What does mass number tell us?
The total number of protons and neutrons
How do you get the number of neutrons alone?
Mass number - Atomic number
What are isotopes?
Atoms of the same element with the same number of protons and electrons, but different number of neutrons
Define relative atomic mass
The weighted mean mass of an atom of an element relative to 1/12th of the mass of carbon-12
Define relative isotopic mass
The mass of an isotope relative to 1/12th of the mass of carbon-12
How do you calculate relative atomic mass?
(Mass x Abundance) + (Mass x Abundance) divided by 100
What is ammonium and its charge?
NH4 (1+)
What is nitrate and its charge?
NO3 (1-)
What is hydrogen carbonate and its charge?
HCO3 (1-)
What is carbonate and its charge?
CO3 (2-)
What is dichromate and its charge?
Cr2O7 (2-)
What is phosphate and its charge?
PO4 (3-)
