Shared Flashcard Set

Details

properties of water
Prentice Hall Biology chapter 2-2
18
Biology
10th Grade
10/27/2009

Additional Biology Flashcards

 


 

Cards

Term
cohesion
Definition
an attraction between molecules of the same substance
Term
adhesion
Definition
an attraction between molecules of different substances
Term
surface tension
Definition
strong attraction between water molecules produces ________________.
Term
capillary action
Definition
one of the forces that draws water out of the roots of a plant and up into the stem and leaves
Term
solvent
Definition
the substance in which the solute disolves
Term
polarity
Definition
the hydrogen atom form covalent bonds with the oxygen atom.  Because of oxygen's greater attraction for electrons, there is an unequal distribution of electrons.  The oxygen end of the bent water molecule is negative; the hydrogen end is positive.
Term
acid
Definition
any compound that forms H+ ions in solution.  Acidic solution contain higher concentrations of H+ ions that pure water and have pH values values below 7.
Term
solvent
Definition
the substance in which the solute disolves
Term
solution
Definition
a type of mixture where all the components are evenly distributed throughout the solution
Term
suspension
Definition
mixtures of water and nondissolved material
Term
water
Definition
the greatest solvent on earth
Term
buffers
Definition
weak acids or bases that can react with strong acids or bases to prevent sharp, sudden changes in pH
Term
solute
Definition
the substance that is disolved
Term

 Blood

Definition

____________ is a solution and a suspension.

Term
base
Definition

solution that contains

lower concentrations of H+ ions than pure water

and have pH values above 7.

example: bleach

Term
Read a section in your book
Definition
What do you need to do for your biology class every night?
Term
mixture
Definition
a material composed of 2 or more elements or compounds that are physically mixed together but not chemically combined.  Salt and pepper are a ___________, so are sugar and sand.  Earth's atmoshphere is a ____________ of gases.
Term
solutions and suspensions
Definition
two types of mixtures
Supporting users have an ad free experience!