Chemistry Semester Review Terms
Terms
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- alpha
- 4/2 He
- chemical property
- the ability of a substance to undergo a change that transforms it into a different substance
- fusion
- light mass nuclei combine to form a heavier more stable nucleus
- proton
- positive charge, mass 1, found in nucleus
- physical change
- a change in a substance that foes not involve a change in the identity of the substance
- mole
- amount of substance
- covalent bond
- 2 nonmetals, share electrons, low melting point, doesn't conducts electricity
- II
- alkaline earth metal, family
- physical property
- a characteristic that can be observed or measured without changing the identity of the substance
- VIII
- noble gas, family
- electron capture
- addition of a beta particle on the left side of the equation
- kilogram
- mass
- ionic bond
- metal and nonmetal, transfers electrons, high melting poin, conducts electricity
- gas
- compressible, condensation
- solid
- fixed shape, fixed volume, melting
- liquid
- compressible, fixed volume, evaporation, freezing
- covalent
- molecular compounds have ______________ bonds
- element
- a pure substance made of only 1 kind of atom
- diatomic molecules
- hydrogen, nitrogen, oxygen, florine, chlorine, bromine, iodine
- atomic mass
- protons + neutrons
- beta
- 0/-1 e
- precise
- closeness of a set of measurements of the same quantity made in the same way
- meter
- length
- gamma
- 0/0 y
- compound
- a substance that is made from the atoms of two or more elements that are chemically bonded
- ionization and electronegativity
- decreases as you go down a group, increases as you go across a period
- group
- columns, families
- atomic number
- number of protons
- nucleus
- what does rutherford's gold foil experiment prove
- atomic radius
- decreases as you go down a group, decreases as you go across a period
- kelvin
- temperature
- accurate
- closeness of measurements to the correct or accepted value of the quantity measured
- atom
- the smallest unit of an element that maintains the properties of that element
- period
- rows
- quantitative
- data dealing with numbers
- hunds rule
- orbitals of equal energy are each occupied by one electron before any orbital is occupied by a second electron, and all electrons in singly occupied orbitals must have the same spin
- metallic bond
- individual metals, sea of electrons in d block unpaired electrons, varied melting point, conducts electricity
- neutron
- neutral charge, mass 1, found in nucleus
- candela
- luminous intensity
- fission
- a very heavy nucleus splits into more stable nuclei of intermediate mass
- density
- mass/volume
- ionization energy
- the energy required to remove one electron from a neutral atom of an element
- second
- time
- electronegativity
- a measure of the ability of an atom in a chemical compound to attract electrons
- I
- alkali metal, family
- chemical change
- a change in which one or more substances are converted into different substances
- ampere
- electric current
- qualitative
- data describing or giving characteristics
- VII
- halogen, family
- electron
- negative charge, mass 0, found in electron cloud
- half life
- time required for half the atom of a radioactive nuclied to decay