Anatomy & Physiology Test Bank Chemistry Basics Exam. Correct Answers at the End

Anatomy & Physiology Test Bank Chemistry Basics Exam. Correct Answers at
the End
Student name:
1) Minerals are organic elements extracted from the soil by plants.
⊚ true
⊚ false



2) Molecules composed of two or more atoms are called compounds.
⊚ true
⊚ false



3) Hydrogen, deuterium, and tritium are three isotopes of hydrogen.
⊚ true
⊚ false



4) Potassium, sodium, and chlorine are trace elements.
⊚ true
⊚ false



5) Ionic bonds break apart in water more easily than covalent bonds do.
⊚ true
⊚ false



6) A solution is a mixture of two or more substances that are physically blended but not
chemically combined.
⊚ true
⊚ false



7) The pH of blood plasma is approximately 7.4, which is slightly acidic.
⊚ true
⊚ false




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,8) The high heat capacity of water makes it a very ineffective coolant.
⊚ true
⊚ false



9) In an exchange reaction, covalent bonds are broken and new covalent bonds are formed.
⊚ true
⊚ false



10) Chemical reactions in which larger molecules are broken down into smaller ones are called
catabolic reactions.
⊚ true
⊚ false



11) The opposite of a dehydration synthesis reaction is a hydrolysis reaction.
⊚ true
⊚ false



12) Unsaturated fatty acids have as much hydrogen as they can carry.
⊚ true
⊚ false



13) A dipeptide is a molecule with two peptide bonds.
⊚ true
⊚ false



14) All amino acids have both a carboxyl group and an amino group attached to a central carbon.
⊚ true
⊚ false




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,15) ATP is the body's most important form of long-term energy storage.
⊚ true
⊚ false



16) The most abundant element in the human body, by weight, is .
A) nitrogen
B) hydrogen
C) carbon
D) oxygen
E) calcium



17) Sodium has an atomic number of 11 and an atomic mass of 23. Sodium has .
A) 12 neutrons and 11 protons
B) 12 protons and 11 neutrons
C) 12 electrons and 11 neutrons
D) 12 protons and 11 electrons
E) 12 electrons and 11 protons



18) The chemical properties of an atom are determined by its .
A) protons
B) electrons
C) neutrons
D) protons and neutrons
E) particles



19) Na (atomic no. 11) reacts with Cl (atomic no. 17) to become stable. In the reaction, Na
will , while Cl will .
A) accept one electron; give up one electron
B) give up one proton; accept one proton
C) share one electron with chlorine; share one electron with sodium
D) become an anion; become a cation
E) give up one electron; accept one electron




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, 20) Oxygen dhas dan datomic dnumber dof d8 dand dan datomic dmass dof d16. dHow dmany dvalence
delectrons ddoes dit dhave?
A) 2
B) 4
C) 6
D) 8
E) 16


21) Oxygen dhas dan datomic dnumber dof deight. dWhen dtwo doxygen datoms dcome dtogether,
dthey dform da(n) bond.
A) hydrogen
B) nonpolar dcovalent
C) polar dcovalent
D) ionic
E) Van dder dWaals


22) When dtable dsalt, dsodium dchloride d(NaCl), dis dplaced din dwater .
A) and form dionic dbonds dwith deach dother
B) and form dpolar dcovalent dbonds dwith deach dother
C) and form dhydrogen dbonds dwith dwater
D) ionic dbonds dbetween and are dbroken
E) and become dseparated dby dtheir dVan dder dWaals dforces


23) The dbonding dproperties dof dan datom dare ddetermined dby dits .
A) electrons
B) protons
C) positrons
D) neutrons
E) photons




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