A Little Chemistry:Chapter 2-1 and 2-2

H+

Hydrogen ion symbol

H

Hydrogen's symbol

N

Nitrogen's symbol

O

Oxygen's symbol

P

Phosphorus's symbol

Na+

Sodium ion symbol

ions

atoms with an electric charge

macromolecules

molecules that are really, really large are called

proton

positively charged

Ca++

Calcium ion symbol

C

Carbon's symbol

Cl-

Chloride ion symbol

K+

Potassium ion symbol

S

Sulfur's symbol

hydrogen bond

The attraction between the hydrogen atom in one water molecule and the oxygen molecule in another

1.It is a good solvent because it dissolves many kinds of molecules 2.It helps in homeostasis because it doesn't change temperature easily 3.It is polar and forms hydrogen bonds that help water molecules stick together 4.It makes up approximately 70% of all living things and is an important participant/product in many chemical reactions

What is/are true of water

van der Waals forces

a slight attraction that develops between the oppositely charged regions of nearby molecules

two hydrogen atoms and one oxygen atom

a water molecule is made up of

hydrophobic

molecules that are "water fearing" and try to stay away from water or other polar mlecules

polar/ionic

molecules that have an uneven pattern of electric charge (more positive in one area; more negative in another) are said to be

electron

negatively charged

electron

orbits the nucleus in energy levels

reactants

these are written on the left hand side of the arrow in a chemical eqation

H+

these ions are measured with a PH scale and determine the acidity of a solution

polar

these molecules are hydrophilic

neutron

uncharged or neutral