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39 Cards in this Set
- Front
- Back
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PROTONS
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A poisitively charged subatomic particles found in the nucleous of an atom
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CATHODE RAYS
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Streams of electrons that are produced when high voltage is applied to electrodes in an evacuated tube.
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ATOM
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smallest particle of an element that retains the chemical identity of the element.
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SUBATOMIC PARTICLES
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Particles such as protons, neutrons, and electrons that are smaller then the atom
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RADIOACTIVITY
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spontaneous emission of radiation
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MOLE CONVERSATION
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6.o22 x 10^23 atoms, molcules, ions (substance)
_______________________ 1 mole (substance |
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NEUTRON
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An electrically nuetral particle in an atom in the neuclus It has approx. the same mass as a proton
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ELECTRON
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A negatively charged subatomic particle found outisde the atomic nucleus; it is is a part of all atoms. An electron has a mass 1/1836 times that of a proton.
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ELECTRONIC CHARGE
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the negative charge carried by an electron; mit has a magnitude of 1.602 x 10^-19
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ATOMIC MASS UNIT
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A unit based on the value of excatly 12 amu for the mass of the isotope of carbon that has six protons and six neutrons in the neucleus
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NON-METAL
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Elements in the upper right corner of the periodic table; nonmetals differ from metals in their physical and chemical properties
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METALLOID
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Metals that lie along the diagonal line separating the metals from the non-metals in the periodic table; the properties of metalloids are intermediate between those metals and alloys
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METAL
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Elements that are usually solids at room temperature , exhibit high electrical and heat conductivity, and appear lustrous
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Angstrom
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a convenient, although non-SI, unit of length used to express atomic dimensions.
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Isotopes
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Atoms with identical atomic numbers but different mass numbers
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Atomic number
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The number of protons in the nucleus of an atom of any particular element
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Mass number
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atomic number is shown by subscript, and the superscript
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Atomic weight
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average atomic mass of each element (expressed in atomic mass units)
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Periods
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horizontal rows on the periodic table
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Molecule
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is a assembly of two or more atoms tightly bound together
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CHEMICAL FORMULA
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A notation that uses chemical symbols with numerical subscripts to convey the relative proportions of atoms of the different elements in a substance
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Diatomic Formula
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A molecule composed of only two atoms
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Molecular Compounds
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compounds that are composed of molecules and contain more more then one
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MOLECULAR FORMULA
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chemical formulas that indicate tghe actual numbers and types of atoms in a molecule
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EMPIRICAL FORMULA
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chemical formulas that give only the relative number of atoms of each type in molecule
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ION
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electrons are removed from or added to a neutral atom a charged particle
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CATION
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ion with positive charge
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Anion
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ion with negative charge
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polyatomic
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an electrically charged group of two or more atoms
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Ionic compound
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a compound that contains both positive and negative ions
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Chemical nomenclature
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the system used to name substances
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Oxyanions
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polyatomic anions containing oxygen whos names end in -ate -ite
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Binary
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two molecular compunds
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organic chemistry
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the study of carbon compounds
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Hydrocarbons
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compounds containing only hydrogen and carbon
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Alkanes
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hydrocarbons containing one or more carbon-carbon double bonded
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Alcohol
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an organic compound obtained by substituting a hydroxyl group (-OH) for a hydrogen on a hydrocarbon
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Group
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elements in the columns in periodic table
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Oxyanions
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polytomic anions containg oxygen and anotheer element
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