ACING EAPS 100 WITH ESSENTIAL A+ QUESTIONS AND
ANSWERS
The principal divisions of Earth's layers listed progressively from the surface
toward the center are _____.
crust, mantle, and core
Which of the Earth's four "spheres" is the largest?
geosphere
What are the eight most common elements found in Earth's crust, listed from
most common to least common (by percent)?
oxygen, silicon, aluminum, iron, calcium, sodium, potassium, magnesium
What is the difference between an atom and an ion?
An atom has a neutral charge because it has an equal number of protons and electrons,
whereas an ion has a positive or a negative charge.
Which of the below statements accurately describes the components of an atom?
A. Protons, which have no charge, occupy the nucleus. Positively charged
neutrons and negatively charged electrons orbit the nucleus in shells.
B. Protons, which have a positive charge, and electrons, which have a negative
charge, occupy the nucleus. Neutrons with no charge orbit the nucleus in shells.
C. Protons, which have a positive charge, and neutrons, which have no charge,
occupy the nucleus. Negatively charged electrons orbit the nucleus in shells.
D. Neutrons, which have no charge, occupy the nucleus. Positively charged
protons and negatively charged electrons orbit the nucleus in shells.
E. Protons, which have a positive charge, and neutrons, which have a negative
charge, occupy the nucleus. Electrons with no charge orbit the nucleus in shells.
C. Protons, which have a positive charge, and neutrons, which have no charge, occupy
the nucleus. Negatively charged electrons orbit the nucleus in shells.
, How does an atom become a positive or a negative ion?
A. An atom becomes a positive ion by gaining an electron; it becomes a negative
ion by losing an electron.
B. An atom becomes a positive ion by losing a neutron; it becomes a negative ion
by gaining an electron.
C. An atom becomes a positive ion by gaining a proton; it becomes a negative ion
by gaining an electron.
D. An atom becomes a positive ion by gaining a proton; it becomes a negative ion
by losing a proton.
E. An atom becomes a positive ion by losing an election; it becomes a negative
ion by gaining an electron.
E. An atom becomes a positive ion by losing an election; it becomes a negative ion by
gaining an electron.
The principal mineral used in making glass is:
A. talc
B. quartz
C. hematite
D. gold
E. copper
B. quartz
All of the following criteria define a mineral except:
A. It is inorganic.
B. It is naturally occurring.
C. It is organic.
D.It has a well-defined chemical composition.
E. It has an orderly internal structure.
C. It is organic.
ANSWERS
The principal divisions of Earth's layers listed progressively from the surface
toward the center are _____.
crust, mantle, and core
Which of the Earth's four "spheres" is the largest?
geosphere
What are the eight most common elements found in Earth's crust, listed from
most common to least common (by percent)?
oxygen, silicon, aluminum, iron, calcium, sodium, potassium, magnesium
What is the difference between an atom and an ion?
An atom has a neutral charge because it has an equal number of protons and electrons,
whereas an ion has a positive or a negative charge.
Which of the below statements accurately describes the components of an atom?
A. Protons, which have no charge, occupy the nucleus. Positively charged
neutrons and negatively charged electrons orbit the nucleus in shells.
B. Protons, which have a positive charge, and electrons, which have a negative
charge, occupy the nucleus. Neutrons with no charge orbit the nucleus in shells.
C. Protons, which have a positive charge, and neutrons, which have no charge,
occupy the nucleus. Negatively charged electrons orbit the nucleus in shells.
D. Neutrons, which have no charge, occupy the nucleus. Positively charged
protons and negatively charged electrons orbit the nucleus in shells.
E. Protons, which have a positive charge, and neutrons, which have a negative
charge, occupy the nucleus. Electrons with no charge orbit the nucleus in shells.
C. Protons, which have a positive charge, and neutrons, which have no charge, occupy
the nucleus. Negatively charged electrons orbit the nucleus in shells.
, How does an atom become a positive or a negative ion?
A. An atom becomes a positive ion by gaining an electron; it becomes a negative
ion by losing an electron.
B. An atom becomes a positive ion by losing a neutron; it becomes a negative ion
by gaining an electron.
C. An atom becomes a positive ion by gaining a proton; it becomes a negative ion
by gaining an electron.
D. An atom becomes a positive ion by gaining a proton; it becomes a negative ion
by losing a proton.
E. An atom becomes a positive ion by losing an election; it becomes a negative
ion by gaining an electron.
E. An atom becomes a positive ion by losing an election; it becomes a negative ion by
gaining an electron.
The principal mineral used in making glass is:
A. talc
B. quartz
C. hematite
D. gold
E. copper
B. quartz
All of the following criteria define a mineral except:
A. It is inorganic.
B. It is naturally occurring.
C. It is organic.
D.It has a well-defined chemical composition.
E. It has an orderly internal structure.
C. It is organic.
