Chemistry Unit 4 Worksheet 1 in a learning moderate can be utilized to check students qualities and understanding by answering questions. Because in the Student Worksheet about 90% of the contents of the whole book are questions, both multiple selection and answer questions which are not available. While the remainder is made up of brief overview of the subject matter. Using worksheet, teachers no longer have to trouble to gather issues or questions. With the media the teacher is needed to focus on providing a maximum knowledge of the specified subject. For the evaluation and test of studying outcomes, the instructor just wants to inform and strong the questions already available in the worksheet. Because more or less the worksheet acts as a guide for pupils in holding out studying responsibilities equally separately and in groups.