Term
| Isotopes differ in the number of |
|
Definition
|
|
Term
| The chemical behavior of an atom is determined most directly by the |
|
Definition
| NUMBER OF VALENCE ELECTRONS |
|
|
Term
| An aqueous solution having a pH of 6 would be... |
|
Definition
|
|
Term
| Lactose is made of one glucose molecule joined by a glycosidic linkage to one galactose molecule; therefore, lactose should be classified as a... |
|
Definition
| DISACCHARIDE (two sugar molecules) |
|
|
Term
Glucose: C6H12O6
What is the new formula when you link three glucose molecules by a dehydration reaction? |
|
Definition
|
|
Term
| What types of bonds are broken down when water vaporizes? |
|
Definition
| Hydrogen bonds between water molecules |
|
|
Term
| Why does glucose dissolve in water? |
|
Definition
| Because it has polar hydroxyl groups that can hydrogen-bond to water. |
|
|
Term
What are hydrocarbons?
Why are hydrocarbons hydrophobic? |
|
Definition
Hydrocarbons are organic molecules that are made up of only carbon and hydrogen.
Because the covalent bonds between C and H are nonpolar (equal). |
|
|
Term
| How many water molecules are needed to completely hydrolyze (break apart) an octamer (polymer composed of 8 monomers)? |
|
Definition
| 7 (one between each monomer bond) |
|
|
Term
| Why is each element unique and different from other elements in chemical properties? |
|
Definition
| Each element contains a unique number of protons in its nucleus. |
|
|
Term
| What are cis-trans isomers? |
|
Definition
It describes the arrangement of functional groups around a double bond.
Cis: both on the top or bottom
Trans: criss-cross |
|
|
Term
|
Definition
| Isomers that differ in their spatial arrangement around an asymmetric carbon resulting in molecules that are mirror images. |
|
|
Term
| If the pH of a solution is increased from pH 5 to pH 7, it means that... |
|
Definition
| the concentration of OH- is 100 times greater than what it was at pH 5. |
|
|
Term
| Why does solid ice float in liquid water? |
|
Definition
| Hydrogen bonds stabilize and keep the molecules of ice farther apart than the water molecules of liquid water. |
|
|
Term
| What is the pH of a solution with a hydroxide ion {OH-} concentration of 10^-12 M? |
|
Definition
|
|
Term
| What results from an unequal (aka polar) sharing of electrons between atoms? |
|
Definition
|
|
Term
| How does a formic acid molecule act? |
|
Definition
| It forms hydrogen bonds with water molecules. |
|
|
Term
| When does an atom become a cation? |
|
Definition
| When it loses one or more electrons |
|
|
