1. What two things must we remeber when Balancing equations. Every chemical coumpound has a ( ) which cannot be ( ).

A chemical ( ) must account for every ( ) that is used, which is an application of the Law of ( ).

2. What does the --> mean?

3. What does the <-- --> mean?

4. Write a balanced chemical equation that illustrates each type of reaction.

Synthesis-

Decomposition-

Single-Replacment -

Double-Replacment (Ionic)-

Astudent pours 10.0 g of salt into a container of water and observes the amount of time it takes for the salt to dissolve. she then repeats the process using the same amounts of salt and water but this time she slowly stirs the mixture while it is dissolving. the student performs the experiment one more time but this time she stirs the mixture rapidly. the dependent variable in this experiment is: time for salt to dissolve speed of stirring amount of water mass of salt