Flashcards
Sem título
Flashcards do conjunto (15)
- 1electrical chargefundamental property of some particles that causes them to experience a force in the presence of electric fields
- 2electrostatic forcesattractive and repulsive forces
- 3electron(discovered by JJ Thomson) negatively charged, low-mass particle present within all atoms
- 4radioactivityemission of small energetic particles from the core of certain unstable atoms
- 5neutronsneutral particles within the nucleus, no electrical charge
- 6What determines the identity of an atom?The number of protons, a.k.a. its atomic number
- 7isotopesatoms of the same element identical in #'s of protons but not in number neutrons (and thus mass)
- 8natural abundancethe relative percentage of a particular isotope in a naturally occurring sample with respect to other isotopes of the same element
- 9ionsthe result of atoms losing or gaining electron
- 10anionnegative ion
- 11cationpositive ion
- 12periodicto exhibit a repeating pattern
- 13other terms for atomic mass(standard) atomic weight
- 14What does the atomic mass represent?the average mass of the isotopes that compose that element, weighted according to the natural abundance of each isotope
- 15mole[mol] amount of a substance
[ 6.02214 x 10^23 ]
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- FlashCards sobre Sem título, criado por Ariana Isaacs em 12-10-2020.
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- Ariana Isaacs
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