Homework answers / question archive / Physical Science | Graded Assignment | Unit Assessment, Part 2 | Chemical Reactions Name: Date: Graded Assignment Unit Assessment, Part 2: Chemical Reactions Complete this teacher-scored portion of the assessment and submit it to your teacher

Physical Science | Graded Assignment | Unit Assessment, Part 2 | Chemical Reactions Name: Date: Graded Assignment Unit Assessment, Part 2: Chemical Reactions Complete this teacher-scored portion of the assessment and submit it to your teacher

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Physical Science | Graded Assignment | Unit Assessment, Part 2 | Chemical Reactions Name: Date: Graded Assignment Unit Assessment, Part 2: Chemical Reactions Complete this teacher-scored portion of the assessment and submit it to your teacher. Total score: ____ of [15] points (Score for Question 1: ___ of [5] points) 1. Explain the roles of products, reactants, and limiting reactant in a chemical reaction. Answer: Type your answer here. (Score for Question 2: ___ of [5] points) 2. What is the role of activation energy in a chemical reaction? Answer: Type your answer here. (Score for Question 3: ___ of [5] points) 3. To plate copper (Cu) pennies, a penny is placed in vinegar. Vinegar is a weak acid with hydrogen ions (H + ). When a penny is put in the vinegar, small gas bubbles can be seen. What were these bubbles composed of, and how did they form? Answer: Type your answer here. © 2018 K12 Inc. All rights reserved. Copying or distributing without K12’s written consent is prohibited. Page 1 of 1 Physical Science | Graded Assignment | Unit Assessment, Part 2 | Bonds Name: Date: Graded Assignment Unit Assessment, Part 2: Bonds Complete this teacher-scored portion of the assessment and submit it to your teacher. Total score: ____ of [15] points (Score for Question 1: ___ of [5] points) 1. Describe electronegativity, and explain the trend of electronegativity in the Periodic Table. Answer: Type your answer here. (Score for Question 2: ___ of [5] points) 2. Describe polar covalent bonds using water as an example. Answer: Type your answer here. (Score for Question 3: ___ of [5] points) 3. What are bonds in metals like? Answer: Type your answer here. © 2018 K12 Inc. All rights reserved. Copying or distributing without K12’s written consent is prohibited. Page 1 of 1 Physical Science | Graded Assignment | Semester Assessment, Part 2 Name: Date: Graded Assignment Semester Assessment, Part 2 Complete this teacher-scored portion of the assessment and submit it to your teacher. Total score: ____ of [15] points (Score for Question 1: ___ of [5] points) 1. Describe the physical and chemical properties of matter, providing examples from everyday life. Answer: Type your answer here. (Score for Question 2: ___ of [5] points) 2. Define and describe a mixture using examples. Answer: Type your answer here. (Score for Question 3: ___ of [5] points) 3. What is the kinetic theory of matter? How does it relate to the motion of molecules? Answer: Type your answer here. © 2018 K12 Inc. All rights reserved. Copying or distributing without K12’s written consent is prohibited. Page 1 of 1 Physical Science | Graded Assignment | Unit Assessment, Part 2 | Organic Chemistry Name: Date: Graded Assignment Unit Assessment, Part 2: Organic Chemistry Complete this teacher-scored portion of the assessment and submit it to your teacher. Total score: ____ of [15] points (Score for Question 1: ___ of [5] points) 1. Why are plastics called polymers? Explain the nature of a polymer. Answer: Type your answer here. (Score for Question 2: ___ of [5] points) 2. Why is carbon able to form so many molecules? Name two examples of molecules containing carbon. Answer: Type your answer here. (Score for Question 3: ___ of [5] points) 3. Discuss the four macromolecules that occur in nature, including the building block units of each different macromolecule. Answer: Type your answer here. © 2018 K12 Inc. All rights reserved. Copying or distributing without K12’s written consent is prohibited. Page 1 of 1 Physical Science | Graded Assignment | Unit Assessment, Part 2 | Atoms Name: Date: Graded Assignment Unit Assessment, Part 2: Atoms Complete this teacher-scored portion of the assessment and submit it to your teacher. Total score: ____ of [15] points (Score for Question 1: ___ of [5] points) 1. Explain how fusion and fission are similar to and different from each other. Answer: Type your answer here. (Score for Question 2: ___ of [5] points) 2. How do protons, neutrons, and electrons determine the properties of an atom? Answer: Type your answer here. (Score for Question 3: ___ of [5] points) 3. What is the role of neutrons in the nucleus? Answer: Type your answer here. © 2018 K12 Inc. All rights reserved. Copying or distributing without K12’s written consent is prohibited.