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BSC 108 - TEST 1 (FROM BANK)
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BSC 108 - TEST 1 (FROM BANK)
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BSC 108 - TEST 1 (FROM BANK)What is biology? - Answers-the scientific study of life
What are the 3 domains? - Answers-Eukarya, Bacteria, Archaea
What is the scientific process? - Answers-a formal process of inquiry
What are the components of the scientific method? - Answers-observation, question,
hypothesis, prediction, experiment, results
What are the components of a good hypothesis? - Answers-should be specific; usually
"if, then" statements
What is the difference between an ion and isotope? - Answers-an ion involves a
difference in number of valence electrons; an isotope involves a difference in number of
neutrons
What is the difference between atomic number and atomic mass? - Answers-atomic
number = number of protons
atomic mass = number of protons + number of neutrons
How can you determine atomic number from atomic mass? - Answers-atomic number is
above element symbol, atomic mass is below element symbol
What are the different types of chemical bonds? - Answers-ionic, covalent, hydrogen
How are ionic bonds formed? - Answers-transferring of outer-shell (valence) electrons
How are covalent bonds formed? - Answers-sharing of outer-shell (valence) electrons
How are hydrogen bonds formed? - Answers-two hydrogen atoms joined to one oxygen
by single covalent bonds
Which bond is the strongest? - Answers-covalent bond
Which bond is the weakest? - Answers-hydrogen bond
What is the difference between an ionic bond and a covalent bond? - Answers-ionic
bond involves the complete transfer of electrons; a covalent bond involves the sharing
of one of more pairs of valence electrons
What is a solution? - Answers-a liquid that is a homogeneous mixture of 2 or more
substances
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