CHMA10H3 Chapter Notes - Chapter 2: Isotope-Ratio Mass Spectrometry, Relative Atomic Mass, Mass Spectrometry

• School: UTSC
• Department: Chemistry
• Course: CHMA10H3
• Professor: fari

Document Summary

Amount of substance (n) - a fundamental quantity in the si system of which the unit of measurement is a mole. Atom - tiny particles characteristic of each element. Atomic mass units (u) - one twelfth of the mass of a c-12 atom. Atomic number (z) - the number of protons in the nucleus of every atom of an element. Atomic weight - the average relative atomic mass of a representative sample of atoms of an element, weighted by the relative abundances of its isotopes. Avogadro"s constant (na) - the number of specified particles in 1 mol of a substance. Chemical compounds - pure substances whose molecules or ions are composed of atoms of different elements in fixed proportions. Chemical equation - a symbolic representation of a chemical reaction. Chemical formula - a representation of a composition of a compound. Chemical properties - the characteristic behaviour of a substances in reactions with other substances.