-Weak attraction between
particles
-Far apart
-Random arrangement
-Vibrate
-Move quickly in all
directions

-Particles held weakly
-Very close together
-Random arrangement
-Vibrate
-Constantly move past each other

-Particles held tightly
-Very close together
-Regular arrangement
-Vibrate
-Can’t move from place to place

-The substance doing the dissolving.
The substance present in the highest
percentage.

-The substance being dissolved, which is present in lesser amount.

-Noble gases (group 18 elements) are chemically stable because their last energy
level is full.
-All elements except Hydrogen and Helium want 8 electrons in their last energy level in order to be chemically stable like the noble gases.
(Hydrogen & Helium want 2 electrons)

-Atoms lose or gain electrons to form ions
-Cations are positive ions metals generally form cations
-Anions are negative ions
-non-metals generally form anions
Ionic compounds are held together by electrostatics ( the positive charge of the cation
attracting the negative charge of the anion. )

There are five types of chemical reactions
-Synthesis reactions
-Decomposition reactions
-Single displacement reactions
-Double displacement reactions
-Combustion reactions