QUESTIONS AND CORRECT ANSWERS
Which of the following statements is NOT true of most metals?
a. Most of them are good conductors of heat.
b. Most of them are gases at room temperature.
c. Most of them are ductile.
d. They make up the majority of elements on the periodic table. - CORRECT
ANSWERS b. Is correct. Metals are usually solids at room temperature,
while nonmetals are usually gases at room temperature.
The adrenal glands are part of the:
a. immune system.
b. endocrine system.
c. emphatic system.
d. respiratory system. - CORRECT ANSWERS b. Is correct. The adrenal
glands are part of the endocrine system. They sit on the kidneys and produce
hormones that regulate salt and water balance and influence blood pressure and
heart rate.
Which of the following is exchanged between two or more atoms that undergo
ionic bonding?
a. Neutrons.
b. Transitory electrons.
c. Valence electrons.
d. Electrical charges - CORRECT ANSWERS c. Is correct. An ionic
bond forms when one atom donates an electron from its outer shell, called a
valence electron, to another atom to form two oppositely charged atoms.
, Which of the following most likely pH of a solution containing many hydroxide
ions (OH-) and few hydrogen ions (H+).
a. 2
b. 6
c. 7
d. 9 - CORRECT ANSWERS d. Is correct. A solution that contains more
hydroxide ions than hydrogen ions is a base, and bases have a pH greater than 7.
Which of the following cannot be found on the periodic table?
a. Bromine
b. Magnesium oxide
c. Phosphorus
d. Chlorine - CORRECT ANSWERS b. Is correct. Magnesium oxide
cannot be found on the periodic table because it is a compound of two elements.
A cyclist is riding over a hill. At what point is his potential energy greatest?
a. At the base of the hill
b. Halfway up the hill
c. At the very top of the hill
d. On the way down the hill - CORRECT ANSWERS c. Is correct. At
the very top of the hill
Which of the following correctly describes the trait Ll, if "L" represents tallness
and "l" represents shortness?
a. Heterozygous genotype and tall phenotype
b. Heterozygous phenotype and tall genotype
c. Homozygous genotype and short phenotype
d. Homozygous phenotype and short genotype - CORRECT ANSWERS
a. Is correct. Heterozygous genotype and tall phenotype. The trait Ll describes