Chapter 2/3 Flashcards
potential Energy
The energy that matter possesses because of its location or structure
The more distant from the nucleus,….?
The greater their potential energy
What is an orbital
The three dimensional space where an electron is found 90% of the time.
Electronegativity
An atom’s attraction for the electrons in a covalent bond
Non-polar covalent bond
The atoms share the electron equally
Polar covalent bond
One atom is more electronegative, but sharing is not equal.
Whats is an advantage of reversibility of weak chemical bonds
DNA has to replicate, so the weak bonds help it easily reverse and replicate.
which is weaker Hydrogen, Ionic, or Covalent?
Hydrogen
Why is hydrogen bond weaker than covalent bonds
Because hydrogen bonds do not involve sharing
Why is hydrogen bond weaker than Ionic bonds
Because only partial charges are involved and not full charges.
When does hydrogen bond form?
When H is specifically bonded to either N, O, Or F.
Negative partial charges go on..?
the most electronegative atom
Positive partial charges go on…?
the least electronegative atom
Van der Waals
Weak attractions
Properties of water that facilitate an environment for life
- Cohesive behavior
- Ability to moderate temperature
- Expansion upon freezing
- Versatility as a solvent
Force of attraction between the same molecules
Cohesion
Different molecules bonding together
Adhesion
Water absorbs heat from warmer air…?
And releases stored heat to cooler air
Specific Heat
The amount of heat that must be absorbed or lost for 1 gram of that substance to change its temperature by 1 degree
When is heat absorbed?
When hydrogen bonds break
When is heat released?
When hydrogen bonds form
Low specific capacity means what temp wise?
The material/substance would heat up quickly.(More heat absorbed) And vice versa
Evaporation
Liquid to gas
Solution
A liquid that is a homogenous mixture of two or more substances
