Chapter 2 Flashcards
(11 cards)
What is the characteristic of Polar bonds?
Weak Change
What is the characteristic of Ionic bonds?
Full Charge
What is the definition of specific heat?
Amount of heat energy required to raise one gram of a substance by 1°C.
What must occur between bonds?
Bonds must be broken.
What is kinetic energy related to?
How fast molecules move = Increased temperature.
What happens to water when temperature changes?
Slowly, organisms are protected from rapid temperature changes.
How much energy is required to turn 1 gram of water into vapor?
590 calories.
What is needed for water molecules to break free from others?
A lot of heat energy.
What happens to fast-moving molecules at the surface?
They leave the surface and take energy with them.
What is the effect on the remaining molecules after fast-moving ones leave?
The remaining molecules are on average moving slower = lower temperature.
What is the cooling effect’s benefit to organisms?
Cooling effect benefits organisms.
