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Chemistry-Ch.1
Question | Answer |
---|---|
Def. of Chemistry | study of the composition, structure, and properties of matter, the processes that matter undergoes, and the energy changes that accompany these processes. |
Organic Chemistry | study of most CARBON-containing compounds. |
Inorganic Chemistry | study of NON-ORGANIC substances |
Physical Chemistry | study of the PROPETIES and the CHANGES of MATTER and their relation to ENERGY |
Analytical Chemistry | identification of the components and the composition of materials |
Biochemistry | study of the substances and processes occuring in LIVING THINGS. |
Mass | is a measure of the amount of matter |
Matter | anything that has mass and takes up space. |
Atom | smallest unit of an element that mantains the chemical identity of that element |
Element | a pure substance that cannot be broken down into simpler, stable substances and is made up of one type of atom. |
Compound | substance that can be broken down into simple stable substances. 2 or more elements chemically bonded |
Extensive Properties | depend on amount of matter that is present |
Intensive Properties | do not depend on amount of matter present |
Physical Property | a characteristic that can be observed or measured WITHOUT changing the identity of the substance. |
Physical Change | a change in a substance that DOES NOT INVOLVE A CHANGE IN THE IDENTITY of the substance |
Change of State | a physical change of a substance from one state to another |
Solid | has definite volume and definite shape |
Liquid | definite volume but indefinite shape |
Gas | indefinite volume and shape |
Plasma | a high-temp. physical state of matter in which atoms lose most of their electrons, particles that make up atoms |
Chemical Property | substances ability to undergo changes that transform it intodifferent substances |
Chemical Change/Reaction | a change in which one or more substances are converted into different substances |
Reactants | substances that react in a chemical change |
Products | substances that are formed by the chemical change |
Mixture | a blend of two or more kinds of matter, each of which retains its own identity and properties |
Homogeneous aka Solution | uniform in composition, equally distributed throughout |
Heterogeneous | not uniform throughout |
Pure Substance | a fixed composition |
Groups/Families | vertical columns of the periodic table |
Periods | Horizontal rows of elements in the periodic table |
Metal | Good electrical conductor and heat conductor, Malleable, ductile, luster, tensile strength |
Malleable | moldable |
Ductile | can be drawn into fine wire |
Luster | shiny |
Nonmetal | a poor conductor of heat and electricity, and are brittle |
Metalloid | has characteristics of both metals and nonmetals |
Every sample given has the same characteristic properties? | Pure Substance |
Every sample given had the same exact composition | Pure Substance |
Basic Research | carried out to increase knowledge |
Applied Research | carried out to solve a problem |
Technological Developement Research | involves production and use of a product to improve the quality of life |
A balance measures? | mass |
A scale measures? | weight |
There are how many groups? | 18 |
There are how many periods? | 7 |
Tensil Strangth? | rsists breaking when pulled |
Groups 1-17 are? why? | Reactive because they are looking to be stable |
Actinides? | ALL radioactive |
Lanthanides aka? | Rare Earth Metals |
Group 18 is known as? | Noble gases |
Group 17? | Halogens |
On the left side of the periodic table you will find? | Metals |
On the right side of the periodic table you will find? | Most Nonmetals and some metalloids |
In the middle of the periodic table you will find? | Transition metals |
Elements 58-103(the section pulled from the table?) | Inner transition metals |