Flashcards
Untitled
Cards in this deck (19)
- 1Where do the protons reside in an atom?Protons and neutrons reside in the tiny nucleus of the atom.
- 2Electronic ChargeThe negative charge carried by an electron; it has a magnitude of 1.602 x 10^ -19
- 3Henri Becquerel (1852-1908)Discovered that a compound of uranium spontaneously emits high-energy radiation call "radioactivity".
- 4J. J. ThompsonCredited for discovery of electron
- 5Robert MillikanCredited for measurement of the charge of an electron.
- 61 atomic mass unit (amu)1 amu=1.66054 x 10^ -24g
- 7ProtonA positively charged subatomic particle found in the nucleus of an atom.
Charge: Positive (1+)
Mass (amu) : 1.0073 - 8NeutronAn electrically neutral particle found in the nucleus of an atome; it has approximately the same mass as a proton.
Charge: None (neutral)
Mass (amu) 1.0087 - 9ElectronA negatively charged subatomic particle found outside the atomic nucleus; it is a part of all atoms. An electron has a mass 1/1836 times that of a proton.
Charge: Negative (1-)
Mass (amu): 5.486 x 10^ -4 - 101 Angstrom1 A= 1 x 10^ -10
- 11Atomsare the basic building blocks of matter. They are the smallest units of an element that can combine with other elements.
- 12Subatomic Particlesatoms that are composed of even smaller particles.
- 13Elementscan be classified by atomic number, the number of protons in the nucleus of an atom.
- 14Mass NumerThe mass number of an atom is the sum of the numbers of protons and neutrons.
- 15IsotopesAtoms of the same element that differ in mass number.
- 16MoleculeAtoms combined to form molecules
- 17Molecular CompoundsCompounds composed of molecules usually contain only nonmetallic elements.
- 18Diatomic MoleculeA molecule that contains two atoms
- 191g6.02214 x 10 ^23
Information
- Description
- College Chemistry (Atoms, Molecules, and Ions) Flashcards on Untitled, created by suzetteinell on 28/02/2015.
- Created by
- suzetteinell
- Views
- 2
- Rating