Chemistry Vocab Flashcards
Electron Cloud
The regions of space around the nucleus of an atom
Total number of shell an atom can have
7
Charge of Protons
Positive
Charge of electrons
Negative
Charge of nuetrons
No charge
Max number of electrons in the first shell?
2
Max number of electrons in the second shell?
8
Number of electrons that make an atom in the outer most energy level?
8
Valence Shell
The outer most electron shell of an atom
The type of bond water has
A Polar Covalent bond with unequal sharing of electrons
pH units
The relative concentration of hydrogen ions in various body fluids is measured in these concentration units
How is the pH scale is expressed?
in moles per liter or molarity and pH runs from 0-14 and is logarithmic
One change in pH is equal to what?
A tenfold change in hydrogen ion concentration
pH level that is neutral
pH=7 ex- absolutely pure distilled water
pH level that is acidic
any pH below 7
