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Apologia Chem M 2B

Atoms and Molecules

QuestionAnswer
John Dalton English, Christian chemist, physicist, and meteorologist, 1766-1844, best known for the development of atomic theory; FATHER of MODERN Chemistry
more than one atom bonded together to form a compound a molecule
a substance composed of identical ATOMS; CANNOT be decomposed into simpler substances an element
a substance composed of identical MOLECULES; CAN be decomposed into elements by CHEMICAL means a compound
ionic compound contains at least 1 metal atom & at least 1 nonmetal atom; conducts electricity when dissolved in water
covalent compound made up solely of nonmetal atoms; does not conduct electricity when dissolved in water
To name an ionic compound, replace the name of the LAST atom in the molecule with its ________ name. -ide
With a covalent compound, we add prefixes in front of the name of each atom in the compound, to state the ____________ of atoms of each element. number
mono- 1
di- 2
tri- 3
tetra- 4
penta- 5
hexa- 6
hepta- 7
octa- 8
nona- 9
deca- 10
We drop the mono-prefix IF and ONLY IF it is on the first atom in the covalent molecule.
pure substance a substance that contains ONLY ONE element OR compound
mixture a substance that contains DIFFERENT compounds and/or elements
Individual components in a MIXTURE can be ______________________ separated based on their individual properties. physically
PURE substances must be decomposed BEFORE their individual components can be physically separated.
homogeneous mixture a mixture with a composition that is always the SAME no matter what part of the sample is observed
heterogeneous mixture a mixture with a composition that is DIFFERENT depending on what part of the sample is observed
Created by: MrsHough
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