chem exam 3
Terms
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- protium
- no neutrons (protium, deuterium, tritium)
- 1 AMU
- the mass of one proton is
- law of conservation of mass
- law used when balancing equations and says in chemical reactions no atoms will be gained or lost
- protons and neutrons
- determines masss numbers of an isotope
- idea that all atoms of a type of element are all the same
- disproven by the discovery of isotopes
- protons
- isotopes of the same element have an equal number of
- protons
- has a positive charge
- protons
- equal to the atomic number when the atom is charged
- deuterium
- 1 proton and 1 nuetron (protium, deuterium, tritium)
- deuterium
- mass of 2 (protium, deuterium, tritium)
- atomic number
- the number of protons is characretistic of an element, this number is the _________ of the element
- neutrons
- varies in number among isotopes of a given element
- 6.02 * 10^23
- one mole is equal to ____ atoms
- electrons
- 0 AMU
- protons and neutrons
- makes the nucleus
- electrons
- located in energy levels around the nucleus
- 19 20 19
- if an atom has a mass of 39 amu and an atomic number of 19, it must have ____ protons, ____ neutrons, and ___ electrons
- 9
- an atom with 4 protons, 5 nuetrons, and 4 electrons has a mass number of
- neutrons
- have no charge
- carbon 12
- the weight of an element is determined by comparison to the _______ atom
- protium
- most abundant (protium, deuterium, tritium)
- tritium
- radioactive (protium, deuterium, tritium)
- law of definite proportions
- every compourn has a definate recipe
- tritium
- nucleus has 2 neutrons (protium, deuterium, tritium)
- atomic number
- what is the arrangement of elements on the periodic table
- nuclide
- is a general term for any isotope of any element
- neutrons
- Isotopes of an element differ only in the number of