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Chemistry 09/19
Question | Answer |
---|---|
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 |