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Chemistry1

Stack #209146

QuestionAnswer
Chemical energy stored in from of bonds
Electrical Energy charged particles calleed ions
Mechanical energy directly involved w/ moving matter (running,walking)
Radiant Energy electromagnetic energy
Atoms smallest unit of matter
CHON makes up 96% of elements in body Carbon, Hydrogen, Oxygen, Nitrogen
Elements cant be broken into simpler subtances... 2 or more diff. kinds of atoms bonded together
Atomic number num. of protons an atoms has..Identifies the atom
Atomic mass num. of protons and neutrons
isotopes atoms of same kind w/ same # of protons but diff. numer of neutons
proton pos. charge
Neutron no charge
Electron neg. charge outside nucleus
Radioisotopes unstable heavier isotopes, nucleus disintegrates ..have half life
Molecules combination of 2 or more atoms bonded together by chemical bond
Homogenous particles of solute will not settle out
Hetergenous particles not evenly dispersed
Solutions homogenous..wnt settle out salt water, sugar water CO2 in soft drinks
Colloids homogenous..wnt settle out ..so-gel transformations..jell-o or cytosol
Suspensions Heterogenous..do settle out.. sand and water, blood
ionic bonds atom transfers electrons to other to form bond
covalent bond share electrons
Hydrogen bond weak bond ..water molecules
Chemical reactions chemical bonds are broken, rearranged or reformed
Created by: christi2188