Biology Unit 1 CHapter 2 Section 2

Biology Unit 1 CHapter 2 Section 2

13 cards   |   Total Attempts: 189
  

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Why are water molecules polar?
Because there is an uneven distribution of electrons between the O and H atoms.
What are Acidic solutions? What are basic Solutions?
Acidic - Have higher H+ ions then pure water PH value below 7Basic - Lower H+ ions then pure water PH value above 7
What is cohesion?
An attraction between molecules of the same substance.
What is adhesion?
An attraction between molecules of different substances.
What is a mixture?
Material composed of 2 or more elements or compounds physically but not chemically mixed together.
What is a solution?
A mixture where the minor component is distributed within a major component.
What is a solute?
That substance that is dissolved
What is a Solvent?
The substance in which the solute dissolves in.
What is suspension?
A mixture of water and non-dissolved material
Ph Scale
Measurement system saying the concentration of H+ ions in a solution
Acid.
Any compound forming H+ ions in a solution.
Base
Compound that produces hydroxide ions in a solution
Buffer
Weak acid/base that react with strong acid/bases to prevent sharp sudden changes in Ph