Chemistry Notes Today

Finish this for homework

CHAPTER 9

1.     Define

a.     Chemical reaction

b.     Reactant

c.     Product

d.     Chemical equation

e.     Word equation

f.      Skeletal equation (also called formula equation, coefficient)

g.     Precipitate: solid that falls out of the products (arrow down)

2.     What are 4 evidences that a chemical reaction has occurred?

a.     Temperature change

b.     Color change

c.     Change in Phase

d.     Odor

e.     Gas bubbles

f.      Formation of a solid

3.     Tell what the following symbols mean in a chemical equation:

a.     +  Reacts with

b.     ->  Reacts to produce or yields

c.     (s) solid

d.     (l) liquid

e.     (g) gas

f.      (aq) aqueous solution (dissolved in water)

4.     Write the formula equation for the following word equations:

a.     Aqueous copper II sulfate reacts with aqueous sodium hydroxide to form

Solid copper (II) hydroxide and aqueous sodium sulfate

b.     Liquid octane reacts with gaseous oxygen to form gaseous carbon dioxide and gaseous water

c.     Solid zinc chlorate decomposes to form solid zinc chloride and gaseous oxygen