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chapter 2 vocab

QuestionAnswer
Element basic basic building block of matter made from one atom
atomic number number of proton
mass number sum of protorns neutron
radioisotope forms of chemical elements that have unstable nuclei and release radiation to become stable
molecules a group of two or more atoms
compound groups of different atoms
valence shell outermost electron shell of an atom
Ions atoms with a different number of protons and electrons
Ionic bond The atrration between 2 ions
hydrogen bonds attraction of postive and covelate bonds
polar molecules that change to combine
calorie unit of energy
hydrophilic molecules that attract water
hydrophibic molecules that aviod water
nonpolar molecules that hydrophobic or hydrophilic
Adhision abitltiy of water to stick together
ph scale scale of acidity
bases
Created by: Jwojcikiewicz
 

 



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