1. Precious Envelope-Energy Curve Complete questions 1-7, 10-20 on page 463 before completing the exercise below Objectives: Investigate properties and states of matter (especially gases) Within the earth systems, matter and energy exist in cycles (for example Water cycle) Atmospheric changes on the earth are determined by behavior of gases (especially weather) The behavior of matter is dependent on its structure and energy Both text questions and the exercise below must be mastered before retaking the assessment.

2. Energy Curve Quiz Review Directions: copy the curves below and label with terms at right Temp. (C) Time (min.) Temp.(C) Time (min.) Boiling Freezing Solid warming Condensing Liquid cooling Gas warming Melting Crystallization Solid cooling Vaporization Gas cooling Liquid warming Kinetic Energy Change Potential Energy Change 145 80 100 0

3. 1.Indentify the curve in the previous slide that represents water. Site evidence on the chart and describe how it is evidence for water. 2.The structure of the compound represented by the other curve is Write two reasons for the differences in melting and boiling points of these two compounds. Be sure to include differences in each structure to support your answer. Energy Curve Quiz Review Directions: copy the curves below and label with terms at right C Cl H H H H C C C C C