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Chemistry 09/19

QuestionAnswer
Chemistry Study of composition, structure and properties of matter and the changes it undergoes.
Organic Chemistry Chemistry of carbon compounds.
Inorganic Chemistry Study of compounds that do not contain carbon.
Physical Chemistry Study of the properties and changes of matter and their relation to energy.
Analytical Chemistry Identification of components and composition of materials.
Biochemistry Chemistry of living things.
Theoretical Chemistry. Use of math and computers to understand the principles behind observed chemical behavior.
Basic Research Doing research for the sake of gaining knowledge.
Applied Research Generally carried out to solve a problem.
Technological Development Involves the production of products that improve our way of life.
Matter Anything that has mass and volume.
Mass Measure of the amount of matter.
Element Pure substance made of only one kind of atom.
Compound Made of 2 or more kinds of atoms chemically bound together.
Extensive Properties Depends upon the amount of matter present.
Intensive Properties Do not depend on the amount of matter present.
Physical Properties One which you can observe without changing the substance.
State: Solid Has a definite shape and volume. Atoms tightly packed.
State: Liquid Has a definite volume but indefinite shape. Atoms spread out a little.
State: Gas Has neither a definite shape nor volume. Atoms spread everywhere.
Chemical Properties Relates to a substances ability to undergo changes that transforms it into different substances. -Flammability -Whether it reacts with oxygen or not -How it reacts when combined with other compounds
Mixtures A blend of two or more kinds of matter; each retains its own properties.
Homogeneous Mixture Solution
Heterogeneous Mixture Not uniform throughout.
Pure Substances Has a fixed composition.
Periodic Table Table that organizes all known elements.
Groups/Families Vertical columns that have similar chemical properties.
Periods Horizontal row. Physical and chemical properties change somewhat regularly across a period.
Metals -Good conductors of heat and electricity. -Solid- many are malleable and ductile -Most have a luster
Nonmetals -Not good conductors -Tend to be brittle -Gases at room temperature
Metalloids -Solids at room temperature -Tend to be semiconductors or electricity
Noble Gases -Group 18 -Nonreactive & many times are used in lightning
 

 



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