STRAIGHTERLINE CHEMISTRY FINAL EXAM 2024-2025
QUESTIONS AND ANSWERS 100 % PASS SOLUTION A+ GRADE
Which of these elements is chemically similar to magnesium
Select one:
a. Sulfur
b. Calcium
c. Iron
d. Nickel
e. Potassium - ANSWER--b. Calcium
What is the vapor pressure above a beaker containing a solution of NaCl that is made up of
250ml of water and 12g of NaCl?
a. 10.3 mmHg
b. 23.4 mmHg
c. 35.8 mmHg
d. 63.2 mmHg - ANSWER--b. 23.4 mmHg
A smart phone has dimensions of 4.9 inches (height), 2.3 inches (width) and 8.0 millimeters
(depth). What is the volume of the smart phone in cubic centimeters? (1 in = 2.54 cm) Select
one:
a. 58 cm3
b. 1.7 x 105 cm3
c. 90 cm3
3.4 cm3 d.
e. 34 cm3 - ANSWER--a. 58 cm3
What is the term used for findings that are summarized based on a pattern or trend
,a. Law
b. Hypothesis c. Theory
d. Phenomena
e. Prediction - ANSWER--a. Law
Which of the following is a tentative explanation for a set of observations? Select one:
a. Law
b. Hypothesis
c. Theory
d. Phenomena
e. Prediction - ANSWER--b. Hypothesis
If a liquid contains 60% sugar and 40% water throughout its composition then what is it called?
Select one:
a. Solute
b. Compound
c. Homogeneous mixture d. Heterogeneous mixture
e. Solvent - ANSWER--c. Homogeneous mixture
Which one of the following equations correctly represents the process relating to the ionization
energy of X?
Select one:
a. X(s) → X+(g) + e-
b. X2(g) → X+(g) + X-(g)
c. X(g) + e- → X-(g)
d. X-(g) → X(g) + e-
e. X(g) → X+(g) + e- - ANSWER--e. X(g) → X+(g) + e-
,Consider the element with the electron configuration [Kr]5s24d105p5. This element is
Select one:
a. a halogen.
b. a transition metal. c. an alkali metal.
d. an actinide element.
e. a noble gas. - ANSWER--a. a halogen.
Consider the element with the electron configuration [Kr]5s24d7. This element is Select one:
a. a halogen.
b. a transition metal.
c. a nonmetal.
d. an actinide element.
e. a noble gas. - ANSWER--b. a transition metal.
How does atomic radius change as you move across the periodic table? Select one:
a. Atomic radius decreases moving from left to right across a period and increases from
top to bottom.
b. Atomic radius increases moving left to right across a period and decreases from top to
bottom.
c. Smaller nuclear charge lowers energy; more electrons in an orbital lowers energy.
d. Atomic radius increases diagonally across the periodic table.
e. None of the answers is correct. - ANSWER--a. Atomic radius decreases moving from left
to right across a period and increases from top to bottom.
Which of these choices is the electron configuration of the iron(III) ion? Select one:
a. [Ar]3d5
b. [Ar]4s13d5 c. [Ar]4s23d3 d. [Ar]3d6
e. [Ar]4s23d9 - ANSWER--a. [Ar]3d5
, An element with the general electron configuration for its outermost electrons of ns2np1
would be in which element group?
Select one:
a. 2A
b. 3A
c. 4A
D. 5A
e. 8A - ANSWER--b. 3A
The effective nuclear charge for an atom is less than the actual nuclear charge due to
Select one:
a. shielding.
b. penetration.
c. paramagnetism.
d. electron-pair repulsion.
e. relativity. - ANSWER--a. shielding.
Which pair of ions exhibits the greatest attractive force between them? Select one:
a. Na+ and Cl-
b. Ca2+ and Cl-
c. Na+ and S2-
d. Al3+ and Mg2+
e. Mg2+ and O2- - ANSWER--e. Mg2+ and O2-
Which of the following is a basic oxide?
QUESTIONS AND ANSWERS 100 % PASS SOLUTION A+ GRADE
Which of these elements is chemically similar to magnesium
Select one:
a. Sulfur
b. Calcium
c. Iron
d. Nickel
e. Potassium - ANSWER--b. Calcium
What is the vapor pressure above a beaker containing a solution of NaCl that is made up of
250ml of water and 12g of NaCl?
a. 10.3 mmHg
b. 23.4 mmHg
c. 35.8 mmHg
d. 63.2 mmHg - ANSWER--b. 23.4 mmHg
A smart phone has dimensions of 4.9 inches (height), 2.3 inches (width) and 8.0 millimeters
(depth). What is the volume of the smart phone in cubic centimeters? (1 in = 2.54 cm) Select
one:
a. 58 cm3
b. 1.7 x 105 cm3
c. 90 cm3
3.4 cm3 d.
e. 34 cm3 - ANSWER--a. 58 cm3
What is the term used for findings that are summarized based on a pattern or trend
,a. Law
b. Hypothesis c. Theory
d. Phenomena
e. Prediction - ANSWER--a. Law
Which of the following is a tentative explanation for a set of observations? Select one:
a. Law
b. Hypothesis
c. Theory
d. Phenomena
e. Prediction - ANSWER--b. Hypothesis
If a liquid contains 60% sugar and 40% water throughout its composition then what is it called?
Select one:
a. Solute
b. Compound
c. Homogeneous mixture d. Heterogeneous mixture
e. Solvent - ANSWER--c. Homogeneous mixture
Which one of the following equations correctly represents the process relating to the ionization
energy of X?
Select one:
a. X(s) → X+(g) + e-
b. X2(g) → X+(g) + X-(g)
c. X(g) + e- → X-(g)
d. X-(g) → X(g) + e-
e. X(g) → X+(g) + e- - ANSWER--e. X(g) → X+(g) + e-
,Consider the element with the electron configuration [Kr]5s24d105p5. This element is
Select one:
a. a halogen.
b. a transition metal. c. an alkali metal.
d. an actinide element.
e. a noble gas. - ANSWER--a. a halogen.
Consider the element with the electron configuration [Kr]5s24d7. This element is Select one:
a. a halogen.
b. a transition metal.
c. a nonmetal.
d. an actinide element.
e. a noble gas. - ANSWER--b. a transition metal.
How does atomic radius change as you move across the periodic table? Select one:
a. Atomic radius decreases moving from left to right across a period and increases from
top to bottom.
b. Atomic radius increases moving left to right across a period and decreases from top to
bottom.
c. Smaller nuclear charge lowers energy; more electrons in an orbital lowers energy.
d. Atomic radius increases diagonally across the periodic table.
e. None of the answers is correct. - ANSWER--a. Atomic radius decreases moving from left
to right across a period and increases from top to bottom.
Which of these choices is the electron configuration of the iron(III) ion? Select one:
a. [Ar]3d5
b. [Ar]4s13d5 c. [Ar]4s23d3 d. [Ar]3d6
e. [Ar]4s23d9 - ANSWER--a. [Ar]3d5
, An element with the general electron configuration for its outermost electrons of ns2np1
would be in which element group?
Select one:
a. 2A
b. 3A
c. 4A
D. 5A
e. 8A - ANSWER--b. 3A
The effective nuclear charge for an atom is less than the actual nuclear charge due to
Select one:
a. shielding.
b. penetration.
c. paramagnetism.
d. electron-pair repulsion.
e. relativity. - ANSWER--a. shielding.
Which pair of ions exhibits the greatest attractive force between them? Select one:
a. Na+ and Cl-
b. Ca2+ and Cl-
c. Na+ and S2-
d. Al3+ and Mg2+
e. Mg2+ and O2- - ANSWER--e. Mg2+ and O2-
Which of the following is a basic oxide?
