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Basic Chem & Organic Molecules
N/A
40
Biology
Undergraduate 1
09/08/2012

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Cards

Term

Ionic bonds are strongest when

dry or wet?

Definition
dry
Term

How much NaCl would need to make 1.0 molar solution in one liter of water?

 

 

Na=23

Cl=35.5

Definition

Work:  58.5g/mol * 1mol/L

 

 

58.5g/L

Term

How much NaOH would you need to make 3 moles?

 

 

 

Na=23

O=16

H=1

Definition

Work:  40g/mol * 3mol

 

 

120g

Term
Name the 7 properties of water.
Definition

high specific heat

ionization

high heat of evaporation

high dieletric

high heat of fusion

most dense at 4*C

solvent for polar molecules

capillary action & surface tension

Term

Carbon 14

atomic # = 6

 

What is the # of neutrons, electrons, and protons?

Definition

protons=6

neutrons=8

electrons=6

Term

Calcium^2+

atomic # = 20

amu = 40

 

What is the # of protons, neutrons, and electrons?

Definition

protons=20

neutrons=20

electrons=18

Term
pH 8, you increase the H+ by a factor of 1000, what is the new pH of the solution?
Definition
5
Term
When an acid is dissolved in water,  what happens?
Definition
the H+ increases and pH decreases
Term
What are the 4 classes of organic molecules?
Definition
carbs, lipids, nucleic acids, proteins
Term

Out of these functional groups, which are nonpolar?

 

amino

hydroxyl

methyl

carbonyl

carboxyl

sulfhydryl

phosphate

Definition
methy and sulfhydryl
Term
4 types of lipids
Definition

fatty acids

steroids

triglycerides

phospholipids

Term
What lipid is a hydrocarbon with a carboxyl group on one end?
Definition
fatty acid
Term
What is a glycerol with 3 fatty acid chains?
Definition
triglyceride
Term
How many carbon rings do steriods have?
Definition
4
Term
Beginning with a solution of pOH 5, you increase the OH- by a factor of 1000, what is the pH of the new solution?
Definition
12
Term
What type of bond occurs between different H2O molecules in liquid water?
Definition
hydrogen
Term

Which of the following would you predict to have the highest solubility in water?

 

NaCl

CH4

O2

all of them

Definition
NaCl
Term
What bond has an unequal sharing of electrons?
Definition
polar covalent
Term
Hydrogen bonds must __________ for water to vaporize.
Definition
break
Term
What is a glycerol with 2 fatty acids and a phosphate group?
Definition
a phosopholipid
Term
What type of reaction synthesizes polymers?
Definition
dehydration or condensation
Term
What type of reaction breaks down a polymer?
Definition
hydrolysis
Term
Are solids or liquids expected to have a higher proportion of unsaturated fats?
Definition
liquids
Term
How many levels of structural organization are present in proteins made up of multiple polypeptide subunits?
Definition
4
Term
If Carbon's electronegativity is 2.5 and there is a C-C bond, what type of bond is it?
Definition
covalent
Term
If Carbon's electronegativity is 2.5 and Oxygen's electronegativity is 3.5 and they form a bond, what type?
Definition
polar covalent
Term

How much glucose (C6H12O6) would you need to make a 1 Liter of a 0.25 M glucose solution?

 

C=12

H=1

O=16

Definition

Work:  72+12+96=180

180/4=45

 

45g

Term
When a carbonyl group is at the end of a carbon skeleton, what is it?
Definition
aldehyde
Term
Scientific method results in...
Definition
improved models
Term
How many covalent bonds will Nitrogen, with the atomic # 7, form?
Definition
5
Term
A form of an element containing different number of neutrons is...
Definition
an isotope
Term
The log of 10,000 to the base 10=
Definition
4
Term

Which of the following groups of organic molecules would be expected to contain Phosphorus?

 

triglycerides

proteins

fatty acids

steriods

none of these

Definition
none of these
Term
The synthesis of a trisacchride from 3 monosacchrides would result in a production of how many water molecules?
Definition
2
Term
What functional group is acidic, can dissociate, and release H+?
Definition
carboxyl
Term
Which 2 functional groups are always found in amino acids?
Definition
carboxyl and amino
Term
What type of interaction stabilizes the alpha helix structure of proteins?
Definition
hydrogen bonds
Term
What is the highest level of structure shown by a protein?
Definition
quarternary
Term
Nucleotides are made up of...
Definition
a phosphate group, a 5 C sugar, and a nitrogenous base
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