Bio 1500 Final Exam Questions and
Answers 100% Pass
Types of hydrogen bonds formed by water - ✔✔-Polar covalent bonds: different charges
share electrons
-Cohesion: same substance attraction, forms water molecules (high surface tension)
-Adhesion: different substances attraction
How does the polarity of water enable life-giving properties? - ✔✔Its slightly negative
and slightly positive charge makes it polar. This allows hydrogen bonds, which make
water a universal solvent.
Properties of acids - ✔✔-pH less than 7
-sour taste
-electrolytes
-react with metal to form hydrogen gas
-turn blue litmus red
Properties of bases - ✔✔-pH more than 7
100% Pass Guarantee Sophia Bennett, All Rights Reserved © 2025 1
, -bitter taste
-don't react with metal
-turn red litmus blue
-can conduct electricity
Difference between ions and isotopes - ✔✔-Ions have lost or gained electrons
-Isotopes have lost or gained neutrons
Determining valence electrons - ✔✔Periodic table use, or the number of electrons in the
outermost shell
Hydroxyl group - ✔✔A functional group consisting of a hydrogen atom joined to an
oxygen atom by a polar covalent bond. Molecules possessing this group are soluble in
water and are called alcohols.
Methyl group - ✔✔A chemical group consisting of a carbon bonded to three hydrogen
atoms. The methyl group may be attached to a carbon or to a different atom.
Carbonyl group - ✔✔A chemical group consisting of a carbon atom linked by a double
bond to an oxygen atom
Carboxyl group - ✔✔A functional group consisting of a single carbon atom double-
bonded to an oxygen atom and also bonded to a hydroxyl group.
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Answers 100% Pass
Types of hydrogen bonds formed by water - ✔✔-Polar covalent bonds: different charges
share electrons
-Cohesion: same substance attraction, forms water molecules (high surface tension)
-Adhesion: different substances attraction
How does the polarity of water enable life-giving properties? - ✔✔Its slightly negative
and slightly positive charge makes it polar. This allows hydrogen bonds, which make
water a universal solvent.
Properties of acids - ✔✔-pH less than 7
-sour taste
-electrolytes
-react with metal to form hydrogen gas
-turn blue litmus red
Properties of bases - ✔✔-pH more than 7
100% Pass Guarantee Sophia Bennett, All Rights Reserved © 2025 1
, -bitter taste
-don't react with metal
-turn red litmus blue
-can conduct electricity
Difference between ions and isotopes - ✔✔-Ions have lost or gained electrons
-Isotopes have lost or gained neutrons
Determining valence electrons - ✔✔Periodic table use, or the number of electrons in the
outermost shell
Hydroxyl group - ✔✔A functional group consisting of a hydrogen atom joined to an
oxygen atom by a polar covalent bond. Molecules possessing this group are soluble in
water and are called alcohols.
Methyl group - ✔✔A chemical group consisting of a carbon bonded to three hydrogen
atoms. The methyl group may be attached to a carbon or to a different atom.
Carbonyl group - ✔✔A chemical group consisting of a carbon atom linked by a double
bond to an oxygen atom
Carboxyl group - ✔✔A functional group consisting of a single carbon atom double-
bonded to an oxygen atom and also bonded to a hydroxyl group.
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