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Honors Chemistry Ch1

QuestionAnswer
Chemistry study of composition, structure, and properties of matter. Also the process that matter undergoes and the E changes that occur
6 main branches of chemistry *organic chemistry *inorganic chemistry *physical chemistry *analytical chemistry *biochemistry *Theatrical chemistry
organic chemistry the study of most carbon containing compounds
oragnometallics metal that is attached to an organic compound. *metal + organic compound
inorganic chemistry the study of non-organic substances many of which are oraganometallics
physical chemistry the study of the properties and changes of matter & their relation to energy
analytical chemistry the identification of the components & composition of materials (matter)
Biochemistry the study of substances & processes occurring in living things
Theoretical Chemistry the use of mathematics and computers to understand the principles behind observed chemical behavior.
chemical any substance that has a definite composition
definite composition pure substance
basic research carried out for the sake of gaining and increasing knowledge
applied research used to solve problems
technological development typically involves the production and use of products that improve quality of life.
matter anything that has mass and volume
volume the amount of 3D space an object occupies
mass a measure of the amount of matter
atom the smallest unit of an element that maintains the chemical identity of that element
element * a pure substance that cannot be broken down into simple substances *made of 1 type of atom
compound * substance that can be broken down * made of 2 or more atoms *chemically bonded
extensive properties depends on the amount of matter that is present
extensive properties examples volume, mass, and the amount of energy in a substance
intensive properties depends on the type of matter present
intensive properties examples boiling point, melting point, density, ability to conduct electricity, and the ability to transfer energy as heat
electrolysis of water breaking down H20 into the original components. H2 + O2
physical properties a characteristic that can be observed or measured without changing the identity
physical properties examples melting and boiling point
physical changes a change in a substance that does not involve a change in identity of the substance
physical changes: examples grinding, cutting, melting, boiling
Change of state a physical change of a substance from one state to another
liquid definite Volume, indefinite shape
solid definite shape and definite volume
gas Indefinite volume and indefinite shape
plasma high temperature physical state where atoms lose most of their electrons
chemical properties relates to substances ability to undergo changes that transform it into a new substance
chemical change when one or more substances are converted into a new substance..... this changes the identity of the substance!
chemical change: examples flammability and toxicity
reactants the substances that react in chemical change
product the substance that is formed by the chemical change
energy in changes can be found in the form of light or heat
mixture *blend of 2 or more kinds of matter *can usually be separated *mixed together physically
homogeneous mixture solutions that are uniform in composition
what does uniform in composition mean molecules spread throughout a mixture equally
heterogeneous mixture mixtures that are NOT uniform in composition
pure substance fixed composition, and is an element or compound
vertical columns on the periodic table a group or family
which column contains elements with similar properties Groups/vertical
horizontal columns periods
metals definition an element that is a good conductor of heat and electricity
metals: properties other than conductibility most are solid at room temp. , malleable and ductile
malleable definition can be hammered into sheets
ductile definition can be drawn into fine wires
metals: examples gold, copper, aluminum
nonmetals definition an element that is a poor electrical and heat conductor
nonmetals: properties other than conductibility many are gases and solids are brittle
nonmetals: examples carbon, sulfur, phosphorus, iodine
metalloids definition an element that has some qualities and properties of metals and some of nonmetals
metalloids: properties semiconductors of heat and electricity, and all are solids at room temp.
noble gases definition elements that are in group 18 of the periodic table
noble gases are generally reactive or nonreactive? nonreactive
noble gases are the only elements that can what? be found in their pure form in the nature
Created by: Ash233
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