ESCI 11040 Final Exam LATEST EXAM 2024-
2025 COMPLETE QUESTION AND ANSWER
GRADED A+
Most of the mass in an atom is in the electrons.
True or False?
False
The shell of an atom contains which of the following?
a. protons and electrons
b. neutrons and electrons
c. protons and neutrons
d. electrons
electrons
An atom that has gained an electron is a/an...
a. element
b. + ion
c. - ion
,d. molecule
- ion
where do all chemical reactions take place?
a. electron shells
b. protons and electrons
c. nucleus
d. at elevated temperatures
electron shells
what is one of the major criterions that all atoms want and is the cause of
chemical reactions?
a. even number of electrons
b. same number of electrons as neutrons
c. filled outer electron shell
d. stable nucleus
filled outer electron shell
,The basic building block of most of earth's minerals is the silica tetrahedron, what
is it composed of?
a. 3 silica, 1 oxygen atom
b. 3 fe/mg and 1 oxygen atom
c. 3 oxygen, 1 fe/mg atom
d. 4 oxygen, 1 silica atom
4 oxygen, 1 silica atom
Which is the most common element found in the earth's crust?
a. iron
b. oxygen
c. calcium
d. silicon
oxygen
The bonding between Si-tetrahedrons and fe/mg is what type?
, a. covalent
b. ionic
c. shell sharing
d. gravitational
ionic
The bonding between silica and oxygen atoms is so strong that it is considered
covalent. What does that mean?
a. the atoms share electrons
b. the atoms exchange electrons
c. the electron shells never touch each other
d. the atoms share protons
the atoms share electrons
The most common elements in earth's crust (Al, Fe, Mg, Ca, Na, K, Si, O) all have
one thing in common except for oxygen. What is unique about oxygen?
a. it is bigger than all the other atoms
b. it has the largest number of electrons
2025 COMPLETE QUESTION AND ANSWER
GRADED A+
Most of the mass in an atom is in the electrons.
True or False?
False
The shell of an atom contains which of the following?
a. protons and electrons
b. neutrons and electrons
c. protons and neutrons
d. electrons
electrons
An atom that has gained an electron is a/an...
a. element
b. + ion
c. - ion
,d. molecule
- ion
where do all chemical reactions take place?
a. electron shells
b. protons and electrons
c. nucleus
d. at elevated temperatures
electron shells
what is one of the major criterions that all atoms want and is the cause of
chemical reactions?
a. even number of electrons
b. same number of electrons as neutrons
c. filled outer electron shell
d. stable nucleus
filled outer electron shell
,The basic building block of most of earth's minerals is the silica tetrahedron, what
is it composed of?
a. 3 silica, 1 oxygen atom
b. 3 fe/mg and 1 oxygen atom
c. 3 oxygen, 1 fe/mg atom
d. 4 oxygen, 1 silica atom
4 oxygen, 1 silica atom
Which is the most common element found in the earth's crust?
a. iron
b. oxygen
c. calcium
d. silicon
oxygen
The bonding between Si-tetrahedrons and fe/mg is what type?
, a. covalent
b. ionic
c. shell sharing
d. gravitational
ionic
The bonding between silica and oxygen atoms is so strong that it is considered
covalent. What does that mean?
a. the atoms share electrons
b. the atoms exchange electrons
c. the electron shells never touch each other
d. the atoms share protons
the atoms share electrons
The most common elements in earth's crust (Al, Fe, Mg, Ca, Na, K, Si, O) all have
one thing in common except for oxygen. What is unique about oxygen?
a. it is bigger than all the other atoms
b. it has the largest number of electrons
