Answers must be in essay form for the 2 free response questions. Outline form is not acceptable. Labeled diagrams may be used to supplement discussion, but in no case will a diagram alone suffice. It is
important that you read each question completely before you begin to write.

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?

What is a main difference between a mixture and a pure substance? a mixture is only a liquid, but a pure substance can be in any state. a mixture looks the same throughout, but a pure substance does not.1 a mixture can vary in composition, but a pure substance has a set composlo a mixture can be made up of a single compound, but a pure substance car

What atom has the largest atomic radius