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Unit 2: Key Concepts Unit 2: The Chemistry of Life Key Concepts Directions: Using one 8.5 x 11 sheet of paper answer all questions and define all vocabulary. Take the time to look up and study those questions/concepts not immediately familiar. Any questions you still have mark with a star, and we will address them in class. The Nature of Matter Name and describe the three subatomic particles found in atoms Explain how the isotopes of an element are similar and how they are different What are chemical compounds, what types of chemical compounds exist? Provide at least one example of each type of compound Properties of Water What is polarity? Why is water polar? What kinds of bonds exist between water molecules? How does polarity contribute to this? Compare/Contrast Cohesion and Adhesion What is a mixture? What is the difference between a solution and a suspension? Compare/Contrast Acids, Bases, and Buffers What does the pH scale measure, what is the importance of knowing pH? Carbon Compounds Describe two reasons why carbon is so important to living things? What is a macromolecule, what is it made up of, and how is it formed? What are the four groups of organic compounds found in living things? What are carboydrates used for? What are lipids used for? What is the purpose of nucleic acids? Where can nucleic acids be found? What are proteins used for? Chemical Reaction and Enzymes Explain how chemical reactions affect chemical bonds in compounds? Describe how energy changes affect how easily a chemical reaction will occur Why are enzymes important to living things? I’ve got it! () Unit 2: Key Concepts
