Flashcards in Module 2: Foundations In Chemistry Deck (18):
Name subatomic particles, their features and where they are found.
An element is written on the periodic table, as:
What do a and z stand for?
x minus y
What are ions, and why are they this way?
Charges p's, as diff no's of pr's / e-'s
Define isotopes, listing their properties.
Name a brief history of the atomic model.
Rel atomic mass: def
Define relative isotopic mass.
Define relatice moleculae mass.
How can Ar be found experimentally?
From isotopic abundances
What are the axies of a mass spectra graph, and how can they be used to fine the Ar of an atom?
Give an equation for the number of particles. Use this to define the 'mole.'
Define molar mass.
How would you find the number of particles in 8.5g is H2S?
Give an equation linking volume, moles and gas volume.
Vol = moles x 24dm3
What is the ideal gas equation? (Indclude what each unknown represents and the units it is measured in).
Define both empirical and molecuar formula.
How can empirical formulae be calculated from experiments?