Particle Collision Theory A chemical reaction can only occur when particles collide with enough force (energy) and at the right angle to be able to break old bonds and form new bonds. How to speed up chemical reactions (and get a date)
NCEA Science Level 1 Chemistry: Rates of Reaction
Balanced Ionic Formula
(students examples)
Note: Calcium-bicarbonate below should be
Ca2+(HCO3-)2 not Ca2+(HCO3-)2
Note: three salts below should all be sulfate salts