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HOMEWORK ASSIGNMENTS FOR: Date ____5/16/17____ Tuesday__ Teacher ____Ms. Weger______________________ th Subject/Grade _____Science____7 Grade___ In-Class: Return other absent or late work…file in Science Folder Check Ch. #’s 1-14 on the Ch. 20-2 REVIEW packet Student Choice for REVIEW o Hands-On Simulation Lab… “Made to Order” about isotopes o Work on Ch. 20 Review Packet and study with partner Homework: Complete the rest of the Ch. 20-2 REVIEW packet (SKIP # 16) (All of it is due WED) ** attached to the HW link on Monday 5/15 Begin to study for your Chapter 20 Test Complete any missing work Announcements/Reminders: Chapter 20 TEST will be on Thursday, 5/18 ** It will cover both sections in the chapter, 1 and 2. ** To study use… o The vocab tool you made o 20-2 Guided Notes o Ch. 20 (2) Review Packet o Quiz for 20-1 AND Personal Study Guide (if you made one) o Directed Readings for 20-1 & 20-2 o Ch. 20 Concept Map o Review WS’s for 20-1 & 20-2 and the Chapter 20 Test Study Guide (not due for a grade, just to guide your study) ** see attached to this HW link for Tuesday, 5/16 ALL MISSING WORK FROM 4TH QUARTER IS DUE NO LATER THAN THE END OF SCHOOL ON THURSDAY, 5/18 FOR SCIENCE CLASS 7th Grade Science Study Guide for Chapter 20 TEST REVIEW QUESTIONS Section 1 1. What meaning did the Greek word “atomos” have? 2. Know definitions: a. Atom c. Nucleus b. Electron c. Electron cloud 3. Who discovered the electron? 4. What else did discovering the electron tell this person about atoms? 5. Who discovered that atoms are mostly empty space with a small but dense positive center? 6. What is the modern (current) model of an atom? 7. Know scientists’ theories (big ideas) on atoms, their “model” (how they pictured atoms), and how they developed ideas (was there a famous experiment? Other ways mentioned?) TIME PERIOD Democritus Dalton Thomson Rutherford Bohr Schrodinger and Heisenberg THEORY (Main ideas) MODEL HOW Section 2 8. Know definitions of vocab words: (1) proton, (2) atomic number, (3) isotope, (4) atomic mass unit, (5) mass number, (6) neutron, (7) atomic mass, and (8) ion. 9. What are the three subatomic particles of an atom? 10. Draw a sketch of an atom below that has 3 protons, 3 neutrons, and 3 electrons. 11. What element would the atom you drew in # 10 be? (see the Periodic Table in your book on page 570) EXPLAIN HOW YOU KNOW! 12. If you were given a periodic table, how could you figure out how many protons an atom of Nickel has? 13. Atoms of the SAME ELEMENT always have the SAME NUMBER OF ________________. The two ways that atoms of the SAME ELEMENT can be different are if the number of _______________________ changes (then it is called an ___________________) or the number of _________________________ changes (this is called an __________________). 14. What has the MOST MASS in an atom? What unit do we use to measure this? 15. Why are most atoms neutral (they have no charge as a whole particle)? 16. What force keeps the electrons moving around the nucleus of its atom? 17. What force keeps the nucleus together? 18. How can you find the mass number of an isotope? (see page 555- two ways possibly) 19. If an atom has 38 protons, 64 neutrons, and 38 electrons, what is its mass number? Study your vocabulary list, 20-2 guided notes, 20-1 Quiz (and Personal Study Guide), the Chapter Review Packet, Directed Readings, Review WS’s and book.