micro lecture chapter 4 (1) Flashcards
1.7 X 10(-24) grams
Dalton: mass
1 Dalton, or 1.7 X 10(-24) grams
Proton: mass
1 Dalton, or 1.7 X 10(-24) grams
Neutron: mass
.0005 Daltons
Electron: mass
The number of protons in the atom.
Atomic number: definition
The number of protons plus neutrons in the atom.
Mass number: definition
Atoms that vary in their number of neutrons.
Isotopes: definition
The average of the mass numbers for a sample of
isotopes for some element.
Atomic weight: definition
The most common isotope of carbon has 6 protons,
6 neutrons, and 6 electrons. For carbon, what is 6?
The atomic number.
The most common isotope of carbon has 6 protons,
6 neutrons, and 6 electrons. For carbon, what is 12?
The most common mass number.
The most common isotope of carbon has 6 protons,
6 neutrons, and 6 electrons. For carbon, what is 12.01115?
The atomic weight.
An atom that has lost or gained electrons and
become electrically charged.
Ion: definition
The transfer of electrons.
Ionic bond: characterized by
NaCl (table salt)
Ionic bond: example
Ionic bonds are held together by the attraction
of true, opposite charges.
Ionic bond: held together