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Chapter 2 - General, Organic, and Biological Chemistry Structures of Life (Karen C. Timberlake)
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Chapter 2 - General, Organic, and Biological Chemistry Structures of Life (Karen C. Timberlake)
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Chapter 2 - General, Organic, and BiologicalChemistry Structures of Life (Karen C.
Timberlake)
Work -
An activity that requires energy. (i.e. running, walking, dancing, or thinking)
Energy -
The ability to do work.
Kinetic Energy -
Is the energy of motion.
Potential Energy -
Is determined by the position of an object or by the chemical composition of a substance.
Heat -
a.k.a. thermal energy, is associated with the motion of particles.
Joule (J) pron: "jewel" -
The SI unit of energy and work.
Calorie (cal) -
latin: calor, meaning "heat". The amount of heat energy that raises the temperature of
exactly 1 g of water exactly 1 degree C; 1 cal=4.184 J.
Matter -
Anything that has mass and occupies space.
Pure substance -
Matter that has a fixed or constant composition.
Element -
The simplest type of a pure substance, is composed of only one kind of material such as
silver, iron, or aluminum.
Compound -
A pure substance, but consists of two or more elements chemically combined in the same
proportion.
Mixture -
Two or more substances are physically mixed, but not chemically combined. I.e. tea,
coffee and ocean water.
Homogeneous Mixture -
aka solution, the composition is uniform through the sample.
Heterogenous Mixture -
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