Biology: Chapter 2: Question Preview (ID: 7101)

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Substance that is dissolved in a solution.
a) Solute b) Solvent c) Mixture d) Suspension
Number of valence electrons "most" atoms need to be considered stable.
a) 2 b) 4 c) 7 d) 8
Used to store energy.
a) Carbohydrates b) Lipids c) Proteins d) Nucleic acids
Monosaccharides contain 2 or more sugar molecules.
a) True b) False c) d)
Calcium is a neutral atom. How many electrons must it have?
a) 19 b) 20 c) 21 d) 38
The elements produced as a result of a chemical reaction are called
a) reactants b) products c) substrates d) elements
Water is an example of an ionic bond.
a) True b) False c) d)
How many more electrons does aluminum need to be stable?
a) 3 b) 4 c) 5 d) 6
The pH range for acids.
a) 0-14 b) 0-7 c) 0-6 d) 8-14
Isotopes are elements that have the same number of protons but different numbers of electrons.
a) True b) False c) d)
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