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Chapter 3 Review

Chapter 3 Review. Chemistry of Life. Atoms. The smallest unit of matter that cannot be broken down by chemical means. Covalent Bonds. Bonds between the atoms that make up water molecules. Ions. An atom that has either has lost or gained an electron. Solutions.

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Chapter 3 Review

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  1. Chapter 3 Review Chemistry of Life

  2. Atoms • The smallest unit of matter that cannot be broken down by chemical means

  3. Covalent Bonds • Bonds between the atoms that make up water molecules

  4. Ions • An atom that has either has lost or gained an electron

  5. Solutions • Is a mixture of evenly distributed substances

  6. Water • Water is polar and therefore polar substances dissolve in it.

  7. Chemical Reactions • In chemical reactions energy may be absorbed, released, and required.

  8. Energy • Without energy organisms can not: • Maintain homeostasis • Carry out chemical reactions • Make their own food

  9. Carbon • The basic unit of most biomolecules contain

  10. Compounds • Are formed when atoms of two different elements join together

  11. Enzymes • Reduce the activation energy of chemical reactions

  12. Basic • Having a pH between 7 and 14

  13. Cohesion • An attraction between substances of the same kind

  14. Adhesion • An attraction between different substances

  15. Acid

  16. Acids • Are compounds that form extra hydronium ions when dissolved in water

  17. RNA • Subunits are made of a sugar, a base, and a phosphate group

  18. Carbohydrates • A class of organic compounds made of carbon, hydrogen, and oxygen atoms in a 1:2:1 ratio

  19. Lipids • A class of organic compounds that include fats, steroids, and waxes

  20. ATP • Provides temporary storage of energy for cells

  21. Protein • A molecular chain of amino acids

  22. pH • A measure of the concentration of hydronium ions in solutions

  23. Test • Tomorrow on Chapter 2 • Please Study these notes

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