Lab Final

Titration
Analytical technique where a reaction is carried out with the controlled addition of one reactant to another until both are consumed.
Indicator
Dye that changes color depending on composition of a solution in which it is placed.
Endpoint
When the titration has ended, indicated through a color change.
Equivalence Point
Point at which the titrant has completely reacted with the reactant.
Neutralization Reaction
Acid-Base Reaction
Primary Standard
Compound that has a relatively high molar mass and is readily available at a low cost and high purity.
Secondary Standard
Lacks at least one criteria to be a primary standard.
Titrant
Solution delivered in incremental amounts from the burette.
% (m/m)
Pass of part/total mass x 100%
Vitamin C
Soluble weak acid predominantly as an aqueous molecule in a solution. (HC6H7O6)
Basic
Containing excess OH-
Electromagnetic Radiation
Radiant energy that exhibits wavelike behavior and travels through space at the speed of light in a vacuum.
Wavelength
Distance between two consecutive identical points on a wave.
Frequency
Number of waves that pass a given point in a second.
Photon
Particle of light.
Planck’s Constant
Constant that relates energy of a photon to the photon’s frequency. (6.626e-34 J*s/photon)
Spectrometer
Device for measuring light.
Accuracy
How close the measurement comes to its true value.
(Agreement of a particular value to the true value.)
Precision
Degree of agreement among several elements of the same quantity.
Meniscus
Curved liquid in a glass tube that can be convex or concave.
Volume by Displacement
Determining the volume of an object by measuring the difference in volume of a liquid it is placed in.
Best Straight Line
Line describing a trend in a data set.
Density
Property of matter representing mass pre unit volume.
Chemical Property
A property that changes a substances identity.
Physical Property
A property that can be observed without changing the substances identity.
Solubility
Ability of a solid to dissolve in a liquid.
Malleability
Degree to which shaping is possible.
Conductivity
Ability of a solution to conduct electricity.
Electrolyte
Solid that generates ions when dissolved in water.
pH
Measure of acidity of a solution.
Starch Test
Test that determines if a sample contains starch by turning the sample blue/black.
Hydrate
Salts that contain water molecules in its crystal structure.
Dehydration
Process in which salts lose their water molecules through heating, leaving an anhydrous salt.
Anhydrate
Salt that had lost its water molecules.
Crucible
Porcelain container used in high-temperature heating.
Precipitate
Solid that forms in a solution by combining insoluble cations and anions.
Alum
A specific type of ionic compound with two types of metal cations and anions.
Filtration
Process used to separate components of a mixture into a solid and liquid.
Filtrate
Liquid remaining after filtration.
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