Chemistry 1061-Lutz

Hypothesis
A Tentative interpretation or explanation for an observation
Scientific Law
a brief statement that summarizes past observations and predicts future ones.
Theory
a General explanation for the manifestation and behavior of all nature
Molecules
Atoms that are bound together in specific geometric arrangements.
Law of conservation of mass
In a chemical reaction , matter is neither created or destroyed.
Matter
Anything that occupies space and has mass
Crystalline
Solid which atoms or molecules are arranged in patterns, with long-range, repeating order
Amorphous
a solid which atoms or molecules do not have any long-range order.
Pure substance
substance composed of only a single type of atom or molecule.
Mixture
a substance composed of 2 or more different types of atoms or molecules that can be combined in continuously variable proportions.
Element
A substance that cannot be chemically broken down into simpler substances.
Compound
a substance composed of two or more elements in fixed, definite proportions
Heterogeneous mixture
A mixture in which the composition varies from one region to another.
Homogeneous Mixture
A mixture with the same composition throughout.
Physical Changes
Changes that alter only state or appearance but not composition
Chemical Changes
Changes that alter the composition of matter.
Physical Property
A property that a substance displays without changing its composition
Chemical Property
A property that a substance displays only by changing its composition via a chemical change.
Energy
The capacity to do work
Kinetic Energy
the energy associated with its motion
Potential Energy
The energy associated with its position or composition
Thermal Energy
The energy associated with the temperature of an object.
Formula for converting degrees °C to °F
°C=(°F-32)/1.8
Formula for converting °C to K
K=°C+273.15
1 mL = X^3 What is X
cm^3
What is the Density formula
D=M/V
Intensive property
A property of a substance that is independent of the amount of the substance. ie density
Extensive Property
A property of a substance that is dependent on the amount of the substance. ie Mass
Accuracy
How close the measured value is close to the actual value.
Precision
How close a series of measurements are to one another or how reproducible they are.
Random Error
Error that that has an equal probability of being to high or to low
Systematic Error
Error that can be predicted to high or to low. May be precise but innacurate.
Dimensional Analysis
Using Units to solve problems
Acetate
C2H3O2-
Dichromate
Cr2O7^2-
Ammonium
HG4+
Bicarbonate
HCO3-
Hydroxide
OH-
Carbonate
CO3^2-
Nitrate
NO3-
Chlorate
ClO3-
Oxalate
C2O4^2-
Chromate
CrO4^2-
Phosphate
PO4^3-
Cyanide
CN-
Sulfate
SO4^2-
H
Hydrogen
Li
Lithium
Na
Sodium
Mg
Magnesium