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mid terms vocab flashcards
elemtents moles and naming compounds
23
Chemistry
10th Grade
01/07/2014

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Term
chemistry
Definition
the study of the composition of matter
Term
scientific method
Definition
logical approach to the solution of scientific problems
Term
observation
Definition
information obtained through the senses; observation in science often involves a measurement
Term
mass
Definition
the amount of matter the object contains
Term
volume
Definition
the space occupied by a sample of matter
Term
vapor
Definition
a substance in a gaseous state that is ordinarily a liquid or solid at room temperature
Term
chromatography
Definition
a chemical process used for separating mixtures into their constituents by virtue of differences in absorbance's
Term
density
Definition
the ratio of the mass of an object to its volume
Term
error
Definition
the differences between the accepted value and the experimental value
Term
percent error
Definition
the percent that a measured value differs from the accepted value
Term
significant digits (figures)
Definition
all the digits that can be known precisely in a measurement, plus a last estimated digit
Term
specific gravity
Definition
the ratio of the density of a substance to that of a standard substance (usually water)
Term
conversion factor
Definition
a ratio of equivalent measurements used to convert a quantity from one unit to another
Term
maslleable
Definition
able to be hammered or pressed permanently out of shape without breaking or cracking
Term
luster
Definition
a gentle sheen or glow
Term
energy shell
Definition
a region around the nucleus of an atom where an electron is likely to be moving
Term
binary compounds
Definition
a compound composed of 2 elements
Term
ionic bonds
Definition
the electrostatic attraction that binds oppositely charged ions together
Term
covalent bonds
Definition
a chemical bond that involves sharing a pair of electron between atoms in molecule
Term
Avagadros number
Definition
the number of representative particles contained in one mole of a substance; equal to 6.02x10 particles
Term
mole
Definition
the amount of a substance that contains 6.02x10 representatives particles of that substance
Term
molar mass
Definition
a general expression used the refer to the mass of a mole of any substance unless a more specific term is needed to avoid confusion
Term
STP
Definition
standard temperature pressure
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