Midterm+Study+Guide+Unit+3

 **__Directions for using the wiki as a study tool:__** On each Mid-Term page, you will find the essential vocabulary and review questions for a particular unit. Select the "discussion" tab located above to pose questions to your classmates or to your teacher. As a team we can help further understanding of topics and support each other to do well on the upcoming Mid-Term. Review the key terms for each unit and **highlight** the terms that are most unfamiliar to you. These will be target terms for review.     **__ Directions for Review Questions __** : Completely and correctly respond to all questions (use separate sheet of paper). Use various resources available to you in order to research responses to questions that you have difficulty answering. **__HOW DO I POST DISCUSSION QUESTIONS?__** **After clicking on the "discussion" tab, which is located at the top right corner you will be directed to a different page. On the discussion page, notice the box at the top. Locate the list of "__subjects__" and click on the subject that you would like to read about and/or respond to. These "subjects" include directions on how to post a question and directions on how to reply to a question. This list will continue to grow as people post questions. This will be a great way for us to interact as a class, even if we are not in the classroom.** **__ Due Date: __** Hand in this review packet with complete responses attached. Review assignment is due on the day of your classes Topics in Science mid-term exam. This assignment is intended to guide your review for mid-term preparation. It will count as TWO homework grades.  **__ UNIT 3: Chemistry __** **__Section 1: Properties of Matter:__** **__Key Terms__** pure substance physical property chemical property element viscosity flammability atom conductivity reactivity compound malleability chemical change heterogeneous mixture melting point precipitate homogeneous mixture boiling point Tyndall Effect solution filtration suspension distillation colloid physical change 
 * Topics in Science - Mid-Term 2009 WIKI Study Guide **
 * __Directions for vocabulary:__**
 * Review Questions: **

** 7. Give 2 examples of chemical properties. **
 * 1. Why are elements and compounds classified as pure substances? **
 * 2. How do mixtures differ from pure substances? **
 * 3. Explain the difference between a solution, suspension and colloid **
 * 4. Consider your dinner fork, list 2 examples of physical properties that relate to its **** function.
 * 5. Name 2 ways to separate mixtures and explain how they differ. **
 * 6. Give an example of how a piece of paper can undergo a physical change. Explain **** why it is physical.
 * 8. List 3 types of evidence for a chemical change

9. Explain the difference between a physical change and a chemical chang e  **

** KEY TERMS Proton Nucleus Valence Electrons Non-Metals Electron Electron Cloud Model Metalloids Halogens Neutron Ground State Period ** Atomic Number Excited State ** Atomic Mass Energy Level Electron configuration Isotope ** Metals **  __** 1. State all subatomic particles in an atom and identify their location, charge, and mass. 2. How is the atomic number of any element determined? 3. What subatomic particles are added together to determine an elements atomic mass? 4. Explain how two atoms of the same element can have different atomic masses. 5. What happens to electrons when atoms gain or lose energy? 6. What is the difference between ground state and excited state? When is light emitted? 7. How do valence electrons affect the chemical properties of an atom? 8. If you didn’t have a periodic table, how could you determine the period and the group where an element would be located? 9. Choose any element between 1-20 and copy the information tile from the periodic table. Identify the atomic number, atomic mass, period, group, # of valence electrons, and type of element (metal, non-metal, or metalloid). 10. What are the properties of metal elements? 11. What is the easiest way to identify metals on the periodic table? 12. Which group contains the most reactive metals? Why are these metals the most reactive? 13. Which group of non-metals is most reactive? What name is given to this family of elements? 14. What group (family) contains elements that are NOT reactive? Why don’t they react? 15. Why are atomic masses NOT listed as whole numbers?
 * __ Section 2: __****__ Atomic Structure and The Periodic Table of Elements __**
 * Noble Gases
 * Group
 * Subatomic Particle
 * __  Review Questions