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General Chemistry Ebbing Gammon
Chapter 1
28
Chemistry
10th Grade
07/12/2009

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Term
synthesizing molecules
Definition
to build large molecules from small ones
Term
molecules
Definition
complicated arrangements of atoms
Term
how do optical fiber cables transmit different types of data?
Definition
using different colors of light
Term
experiment
Definition
an observation of natural phenomenon carried out in a controlled manner so the results can be duplicated and conclusions obtained
Term
law
Definition
a statement or equation about a fundamental relationship
Term
hypothesis
Definition
a tentative explanation of some regularity of nature
Term
theory
Definition
a tested explanation of basic natural phenomena
Term
describe process of the scientific method
Definition
framing laws, hypothesis, or theories and then conducting experiments
Term
describe law of conservation of mass& who made it
Definition
Antoine Lavoisier;
it states that the total mass remains constant during a chemical change
Term
mass
Definition
quantity of matter in a material
Term
matter
Definition
whatever occupies space can can be felt or seen
Term
weight
Definition
force of gravity exerted on object
Term
list 3 states of matter
Definition
solid, liquid and gas
Term
chemical reaction
Definition
a change in which one or more kinds of matter are transformed into a new kind of matter or several new kinds of matter
Term
physical property
Definition
characteristic that can be observed w/o changing chemical identity
Term
chemical property
Definition
characteristic of material that involves its chemical change
Term
substance
Definition
kind of matter that can't be separated into other kinds of matter by physical means
Term
element
Definition
substance that cannot be decomposed into simpler substances
Term
compound
Definition
substance composed of 2 or more elements chemically combined
Term
law of definite proportions (aka law of constant composition)
Definition
a pure compound always contains definite or constant proportions of the elements by mass.
Term
mixture
Definition
a material that can be separated by physical means into 2 or more substances
Term
heterogeneous mixture vs homogeneous mixture
Definition
2 or more phases vs 1 phase
Term
phase
Definition
part of mixture that is uniform throughout
Term
scientific notation
Definition
representation of number in the form Ax10^n
Term
what is the particular choice of metric units?
Definition
SI units
Term
meter, kilogram, second, kelvin
Definition
SI unit of length, mass, time, and temperature (absolute temp)
Term
density
Definition
mass per unit volume
d=(m/V)
Term
science of measurements by Lavoisier
Definition
requires making measurements
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