Straighterline Chemistry Final Exam Questions with Complete 100% Verified
Solutions (2026/2027 update) |A+ Graded.
What is the molecular formula for dinitrogen trioxide? - answer -N2O3
What is the molecular formula for sulfur tetrafluoride? - answer -SF4
What is the molecular formula for tetraphosphorus decasulfide - answer -P4S10
What is the empirical formula for C6H12O6 - answer -CH2O
All elements fall into one of the following groups: - answer -metal, nonmetal, metalloid
mass number = - answer -number of protons + number of neutrons
On the periodic table, what is the number below the element? - answer -Atomic Weight
1|Page
,On the periodic table, what is the number above the element? - answer -Atomic Number
Alpha rays - answer -Positively charged particles that are deflected away from the positively charged
plate
Beta rays - answer -Electrons that are deflected away from the negatively charged plate
Gamma rays - answer -high energy radiation that have no charge and are unaffected by external electric
or magnetic fields.
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:
2|Page
,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 of the following does not have a uniform composition throughout?
Select one:
a. Element
b. Compound
c. Homogeneous mixture
d. Heterogeneous mixture
e. Solvent - answer -d. Heterogeneous mixture
3|Page
, Which one of these represents a physical change?
Select one:
a. Water, when heated, forms steam.
b. Bleach turns hair yellow.
c. Sugar, when heated, becomes brown.
d. Milk turns sour.
e. Apples, when exposed to air, turn brown. - answer -a. Water, when heated, forms steam.
How many micrograms are in 65.3 kg?
Select one:
a. 0.653 μg
b. 6.53 × 107 μg
c. 6.53 × 104 μg
d. 6.53 × 10-8 μg
e. 6.53 × 1010 μg - answer -e. 6.53 × 1010 μg
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
4|Page
Solutions (2026/2027 update) |A+ Graded.
What is the molecular formula for dinitrogen trioxide? - answer -N2O3
What is the molecular formula for sulfur tetrafluoride? - answer -SF4
What is the molecular formula for tetraphosphorus decasulfide - answer -P4S10
What is the empirical formula for C6H12O6 - answer -CH2O
All elements fall into one of the following groups: - answer -metal, nonmetal, metalloid
mass number = - answer -number of protons + number of neutrons
On the periodic table, what is the number below the element? - answer -Atomic Weight
1|Page
,On the periodic table, what is the number above the element? - answer -Atomic Number
Alpha rays - answer -Positively charged particles that are deflected away from the positively charged
plate
Beta rays - answer -Electrons that are deflected away from the negatively charged plate
Gamma rays - answer -high energy radiation that have no charge and are unaffected by external electric
or magnetic fields.
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:
2|Page
,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 of the following does not have a uniform composition throughout?
Select one:
a. Element
b. Compound
c. Homogeneous mixture
d. Heterogeneous mixture
e. Solvent - answer -d. Heterogeneous mixture
3|Page
, Which one of these represents a physical change?
Select one:
a. Water, when heated, forms steam.
b. Bleach turns hair yellow.
c. Sugar, when heated, becomes brown.
d. Milk turns sour.
e. Apples, when exposed to air, turn brown. - answer -a. Water, when heated, forms steam.
How many micrograms are in 65.3 kg?
Select one:
a. 0.653 μg
b. 6.53 × 107 μg
c. 6.53 × 104 μg
d. 6.53 × 10-8 μg
e. 6.53 × 1010 μg - answer -e. 6.53 × 1010 μg
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
4|Page
