STUDY GUIDE: BASIC CHEMISTRY - BIOLOGY JUNCTION
Name _______________________________ Date ________ Period ________
[pic]BASIC CHEMISTRY
KEY TERMS:
Matter
Inorganic
Atom
Element
Atomic nucleus
Proton
Neutron
Atomic number
Mass number (=atomic weight)
Isotope
Electron
Valence electrons
Orbital
Octet rule
Half-life
Radioactive tracer
Ion
Dissociation
Ionic bond
Valence
Ionization
Molecule
Molecular formula
Structural formula
Compound
Acid
Base
Hydrogen ion
Hydroxide ion
PH
Buffer
Nonpolar covalent bond
Polar covalent bond
Ionic bond
Anion
Cation
Hydrogen bond
Hydrophobic
Hydrophobic interactions
Hydration
Hydrophilic
Bound water
Surface tension
Capillarity (=capillary action)
Specific heat
Freezing point of water
Heat of vaporization
Solvent
Solute
Aqueous solution
QUESTIONS
1. Describe atomic structure using the terms proton, neutron, electron, mass number and orbital. Indicate what is meant by electrons in an "excited state" and those in a "ground state"
2. Explain what an isotope is and give two important physical properties of isotopes that make them useful in biological research. Define half-life.
3. Using diagrams, explain what an ion is, and how it forms. Describe an ionic bond.
4. Explain what is meant by pH. Give the name of materials that resist a change in pH.
5. Describe a covalent bond and tell how it differs from an ionic bond. Relate the structure of an atom to its chemical properties and to the type of chemical bond it forms.
6. Explain the important role of weak chemical bonds in the organization of living things.
7. Describe the special physical properties of water. Draw two water molecules in a way that illustrates a hydrogen bond, explain why water is a good solvent, and show the basis for the high surface tension of water.
How do the unique chemical and physical properties of water make life on earth possible?
8. Indicate why oxygen and carbon dioxide are basic to life, and name the principle source of each of these molecules.
9. How do mixtures, compounds, and molecules differ from each other?
10. What is the difference between a polar and nonpolar covalent bond?
11. What properties of water make it an essential component of living material?
12. Why are buffers important to living things? Explain how a buffer system works.
13. Explain why isotopes are important in biochemical research?
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