Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
37 Cards in this Set
- Front
- Back
|
titration
|
we neutralize an acid smple with a know amount of base.
|
|
|
neutralization
|
are action between an acid and base to forma salt.
|
|
|
indicator
|
acid-base indicator. is a weak acid or a weak base, to make ph of soluton can be determined visualy.
|
|
|
acid reaction with metal
|
produce hydroge gas and a salt.
Mg+2HCl-> H2+ MgCl2 |
|
|
acid reaction with base
|
is neutralization. to produce salt and water.
HCl+NaOH --> H2O +NaCl |
|
|
Molarity(M)
|
a concentration that states the number of moles of solute in exactly 1 liter of solution
Molarity(M)= Moles of solute/liter of solution. |
|
|
Alcohol funtional group
|
R---OH
|
|
|
Carboxylic acid
|
R ==O --HO
|
|
|
Ketone
|
R==O---R
|
|
|
Ester
|
R==O---RO
|
|
|
aldehyde
|
R--C==O==H
|
|
|
Ether
|
R--O---RC
|
|
|
how to prepara of ethyl acetate (Ester)?
|
1. place 3ml of glacial acetic acid in a test tube. 2. add 3ml of ethyl alcohol to the test tube. 3. add 5drops of concentrated sulfuric acid. 4. mix with a glass stirring rod. 5. heat in a beaker of boiling water for five to ten minutes. 6. pour the content sof the test tube into a beaker containing 20ml of water. describe the odor of the soluton.
|
|
|
how to preparation of Aspirin(Ester)?
|
1, place about 2grams of salicylic acid in a small flask. 2. add 4mls of acetic anhydride to the flask. 3, add 4drop of concentrated sulfuric acid, 4. mix and let stand for about 10minutes. 5, mix again and cool the flask in a beaker of ice-water, A thick mass of crystals should form.
6. add 20mls of water, stir, and filter, rinse the solid on the filter paer several times with 20ml water. 7. remove teh solid and dry it, this solid is aspirin. |
|
|
how to prepara methyl aslicylate (Ester)?
|
1. place 3mls of methyl alcohol in a dry test tube. 2. add about 0.5 gram of salicylic acid. stir until dissolved. 3. slowly add 10drops of concentrated sulfuric acid. 4. place the test tube in a beaker of boling water for several minutes. 5. pour the conternt of the tst tube into a beaker containing 25mls of water.
|
|
|
petide bond
|
bond linking amino acids together.
|
|
|
lipids
|
all lipids are hydrphobic. include fat, oils, waxes, phospholipids, and steroids.
|
|
|
fat
|
are simple lipids with fatty acids.
|
|
|
emulsifier
|
a substance that stabilizes and emulsion by increasing its kinetic stability.
|
|
|
polypeptide
|
many amino acid are held togetehr by many peptid bond.
|
|
|
amino acid
|
protein are conpose of moleculare biulding blocks
|
|
|
what is N -terminal amina acid?
|
in a peptide, the aamino acid written on the left with the free -NH3+ groups is called teh N-terminal amina acid.
|
|
|
what is C -terminal amino acid?
|
the last amino acid in the chain with the free -COO-group.
|
|
|
protein
|
when there are more then 50amina acids in a chain.
|
|
|
Monosaccharides
|
simplest carbohydrates( glucose)
|
|
|
Disaccharids
|
consist of two monosaccharide ( table sugar, sucrose)
|
|
|
Polysaccharides
|
contain many monsosaccharides units.
|
|
|
Carbohydrate
|
constits of carbon, hydrogen and oxygen.
|
|
|
hydrolysis
|
chemical decomposition in which a compound is split into other compunds by reacting with water.
|
|
|
what substance are soaps made of ?
|
sodium slat of a fatty acid
|
|
|
how soap taste?
|
bitter, indicate about base
|
|
|
what is the source of butter?
|
cow's milk
|
|
|
what is the source of margarine?
|
vegetable oil
|
|
|
which is likely to have more cholesterol ? why?
|
butter. because butter made form animal produces contain more saturated fat.
|
|
|
what substances are likely to be found in hard water?
|
soluble salts and mineral( calcium and magnesium)
|
|
|
how does hard water affect soap?
|
soap contain sodium salt of fatty acids. the hard water inons react with fatty acids given insoluble compound then end up in form and build scum.
|
|
|
how does hard water affect a detergent?
|
affect chemistry of actin between detergent and water ot prevent it form forning a good lather, affect the cleanign power.
|
