Vocabulary Review (page 87) 1. c (1/1) 2. f (6/2) 3. d (3/1) 4. i (1/1) 5. a (3/1) 6. g (1/1) 7. b (6/2) 8. e (3/1) 9. h (5/2) Part B. The nitrogen cycle involves nitrogen-fixing bacteria, lightning, and decaying organic matter. 6. 7. Average atomic mass 5. e 6. c 7. b 8. a 9. h 10. f 11. g 12. d Section 2 (page 64) 1. 9. � Beyond Level. � There might have been an unknown influence affecting the dependent variable. 3 Write Matter, Energy, and Interactions on the board. (4/3) 10. Baby oil will float on water. Concept Review (page 118) 1. 9. Ask students which word you focused on last time (Interactions). 4. LS2.B: The atoms that make up the organisms in an ecosystem are cycled repeatedly between the living and nonliving parts of the ecosystem. T 15. 2. artifact or hardware; methodology or technique; system of production; social-technical system 3. They all form salts with sodium and other alkali metals. Gravity causes the dust and gases to move closer together. An eclipse happens when Earth, the Sun, and the Moon are lined up in a certain way. 64,000 m 8. Archaeologists use carbon dating to determine the age of dead animals, plants, and humans. 3 Section 1 and 3 (page 114) 1. Living things respond and adjust to changes in their environment. A scientist works to learn more scientific information and an engineer applies scientific information to solve a problem or human need. Vocabulary Review (page 43) 1. chemical property (1/1) 2. chemical change (4/2) 3. conservation of mass (3/2) 4. physical change (4/2) 5. density (1/1) 6. physical property (1/1) 7. boiling point (1/1) 8. behavior (1/1) 9. volume (1/1) 10. melting point (1/1) 11. state (2/1) 12. appearance (1/1) Part B. Students should draw a box around the Actinides. 2. 2. Sections 1 (page 68) 1. atomic number 2. element symbol 3. element name 4. atomic mass 5. (1/1) 2. False. As they do, the temperatures in the cloud begin to rise, and the heat becomes great enough to cause the atoms in the cloud to join together. d. How much does it eat? 5/2 7. Synopsis. 1/1 4. This website is a PDF document search engine. The elements in the same column of the periodic table (same group, or family) all have the same number of electrons in their outer energy levels. Kelvin 8. kilogram 9. meter 10. line graph 11. estimation; vertical word: measurement Chapter Review Part A. 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(2/1) 12. During transmutation one element changes into another through radioactive decay. N (north); the filings between the poles of each magnet are repelled, so the poles must be like poles. There is no definite edge. (1/2) 3. Possible answers include: red/green/red & blue, cylindrical solid filled with liquid which has a high concentration of gas, 355 mL, pressure increases if shaken A star�s color indicates its temperature. Scientists would have difficulty sharing information. 1 5. Concept Review (page 62) 1. nucleus (3/1) 2. neutron (3/1) 3. proton (3/1) 4. electron (3/1) 5. electron cloud (3/1) 6. atom (1/1) 7. atom (4/1) 8. cathode rays (1/1) 9. neutron (3/1) 10. equal to (5/2) 11. protons (3/1) 12. subtract the atomic number (6/2) 13. Earth 4. 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