Compounds & Molecules
Atoms and Ions are held together by?
chemical bonds
What kind of bonds are very conductive of electricity?
Metallic Bonds
Copper atoms are held together by what kind of bonds?
Metallic
All organic compounds contain what element?
Carbon
Which Polymer determines genetic makeup?
DNA
How do chemical bonds affect a substance's melting point?
stronger chemical bonds make higher melting points
What kind of bonds form positive and negative ions?
Ionic bonds
How does the attraction between molecules compare to the attraction between ions?
Ions have a stronger attraction
How are polymers different than other molecules?
Polymers are molecules made of long chains of repeating smaller molecules
Which polymer contains amino acids?
Proteins
space-filling model
Atoms form bonds to become more?
stable
What kind of bonds usually occur between nonmetals?
Atoms in organic molecules are held together by ____ bonds?
covalent
Which polymer consists of sugars, starches, and fibers?
Carbohydrates
Which chemical structure model shows the bond angle?
Ball-and-Stick model
Why are metallic bonds so good at conducting electricity?
They pack atoms so close together their energy levels overlap, allowing electrons to pass freely from atom to atom.
What kind of bonds have high boiling points and what kind of bonds have low boiling points?
Ionic has high boiling points
Covalent has low boiling points
Alcohols must contain a bond between what two elements?
Oxygen and Hydrogen
Sulfur atoms has 6 electrons in their shells. When 2 sulfur atoms bond they will form a ____ bond by ____ their electrons
Covalent bond by sharing electrons
Lithium has one electron in its outer shell and fluorine has seven electrons in its outer shell. These atoms will form a ____ bond by ____ their electrons
Ionic bond by transferring their electrons
How do alkane and alkene differ in their chemical bonds?
Alkanes have single bonds while alkenes have at least one double bond