Chapter 3 (water and Life)

Buffers

are substances that miniamize changes in concentration of H+ and OH- in a solution

Base

a compound that accepts H+ and removes them from solution

Acid

a substance that releases H+ to a solution

Molarity (M)

is the number of moles of solute per liter of solution 

molecular mass

is the sum of all masses of all atoms in a molecule

Hydrophobic

water hating

hydrophilic 

water loving 

Solute

the dissolved substances

solvent

the dissolving agent

solution 

liquid consisting of a homogenus mixture of two or more substances 

specific heat

is the amount of heat that must be abosrbed or lost for 1 gram of that substance to change its tempature by 1 degree celcius

Calorie (Cal)

the amount of heat requried to raise the tempative of 1 gram of water by 1 degree celcius

Kinetic Energy 

the energy motion 

Hydrogen bonds give water a…

high surface tension

Surface Tension

a mearsure of now diffucult it is to stretch or break the surface of a liquid

Adhesion 

is the ability of dissasimlar molecules to stick together 

Cohesion

is the ability of like molecule to stick together

Properties of Water

1. Cohesive behavior

2. abliltiy to moderate tempature

3. exspansion upon frezzing

4. versatility as a sovlent