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Properties of H20

QuestionAnswer
acid add h+ to solution
Adhesion water molecules sticking to other substances
atomic number number of protons in an element
base add OH- to solution
buffer molecules that combine with hydrogen ions, release them , or both- stabalize pH
chemical bonds hold atoms together- determined by electron behavior
cohesion water molecules sticking to eachother
compounds A substance formed by the chemical combination of two or more elements in specific proportions
Covalent Bond Sharing of electrons
electrons move around nucleus in energy levels
elements pure substances made of one type of atom
energy levels contain electrons in 2, 8, 18 order
H+ ions added to a solution in acid, concentration expressed as pH
hydrophilic polar substance that is attracted to the polar water molecule; disolves easily in water ex: sugar
hydrophobic nonpolar substance that is repelled by polar water molecule; doesn't readily dissolve in water ex: oil
ionic bond transfer of electrons; attraction of opposite charges
isotope atoms of the same element with different numbers of neutrons
negative ?
neutrons equal to the number of protons and weight
nonpolar hydrophobic
OH- ions Bases add these to substances, raising the pH
pH the acidity of a solution
polar hydrophilic
positive a
protons atomic number- # of neutrons and electrons
solute substance that is dissolved in water
solution solvent+solute
solvent substance that dissolves solutes
specific heat energy absorbed before heating up
surface tension forms a thin layer over its surface (water has high st)
Created by: AlanaR
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