Chapter 1- Water And Polarity Flashcards
(29 cards)
Our blood is what and due to what
It is aq and is 70% water
The ________ are formed due to water
Shape of molecules
_______ participates in _______ reactions.
Water; chemical
Structure of water
Watch the mol lec
Water is made of ______
2 hydrogens and 1 oxygen.
The structure of water causes ________ because opp ends have ____________ therefore causing diff _________ due to diff ________ of ________
Polarity; diff charges; electronegativity; attraction; electrons
Delta means _______ and ion means ______
Partial negative or positive; fully pos or neg.
A ________ molecule forms ____ binds to dissolve in water.
Polar; h2
Hydrogen bonds are _____ and are _____ of covalent bond. Why is water so strong if its made of hydrogen bonds?
Weak; 1/20. Because there are many of them
Why do diff water molecules form hyd bonds with each other?
Because h bonds form between o and h. SNOF
Why does water have bent shape?
Its polar causing diff attractions of electrons causing repellation of them due to partial pos or neg charges on ends.
Where is covalent bond and where is hydrogen bond
Water; diff water molecules.
1 water mol can form ___ hydrogen bonds due to _____
4; oxygen has lone pair of electroms
What is hydrophilic and what forms covalent or hydrogen bonds and what happens
Loving water; ions form covalent coz they seperate and polar molecules form hydrogen bonds within water after seperatijg and dissolving in watef
Polar molecules have _________
OH and NH and SH which donate electrons whereas oxygen accepts.
What is hydrophobic and what group and whats with the chain
Water hating and CH usually and the longer t(e chain of trigylcerides for example the harder it is to dissolve
What are amphioathic molecules and what do they consist
They are both loving and hating hating water and consist both of non polar and polar molecules for example phospholipids.
Water dissociates into what and are they equal
Into H+ and OH- and yes
What is the concentration of H+ in pure water
1*10^-7
What is Ph and whats neutral or basic or acidic.
-log*conc of H+. The higher the H+ conc the lower the Ph. 7 is neutral and below it is acidic and above is basic.
Below 7 means more H+ or less and above means whats
Below 7 means more H + and above means less h+ and more OH-.
A 10x conc diff means what
A 1 unit change in the Ph
Acids _________ and bases _______ them
Donates lrotons; bases accepts them
Strong acids _______ completel6py and weak ones dont
Dissociate
