STRAIGHTERLINE CHEMISTRY
FINAL COMPLETE TEST,
PRACTICE QUESTIONS WITH
CORRECT AND VERIFIED ANSWER
KEY GRADED A+, AND STUDY
GUIDE FOR (LATEST 2026
EDITION)
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 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
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
c. 90 cm3
d. 3.4 cm3
e. 34 cm3 - answer-a. 58 cm3
Given that 1 inch = 2.54 cm, 1.00 cm3 is equal to
Select one:
a. 16.4 in3
b. 6.45 in3
c. 0.394 in3
d. 0.155 in3
e. 0.0610 in3 - answer-e. 0.0610 in3
What terms defines a mass which is exactly equal to 1/12 the mass of one carbon-12
atom?
Select one:
a. Isotope number
b. Mass number
c. Mass-to-charge ratio
d. Atomic number
e. Atomic mass unit - answer-e. Atomic mass unit
, How many neutrons are there in an atom of lead whose mass number is 208?
Select one:
a. 82
b. 126
c. 208
d. 290
e. none of them - answer-b. 126
Which of these elements is chemically similar to magnesium?
Select one:
a. Sulfur
b. Calcium
c. Iron
d. Nickel
e. Potassium - answer-b. Calcium
C(graphite) and C(diamond) are examples of:
Select one:
a. isotopes of carbon.
b. allotropes of carbon.
c. the law of definite proportions.
d. different carbon ions. - answer-b. allotropes of carbon.
The 80Br- ion has
FINAL COMPLETE TEST,
PRACTICE QUESTIONS WITH
CORRECT AND VERIFIED ANSWER
KEY GRADED A+, AND STUDY
GUIDE FOR (LATEST 2026
EDITION)
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 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
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
c. 90 cm3
d. 3.4 cm3
e. 34 cm3 - answer-a. 58 cm3
Given that 1 inch = 2.54 cm, 1.00 cm3 is equal to
Select one:
a. 16.4 in3
b. 6.45 in3
c. 0.394 in3
d. 0.155 in3
e. 0.0610 in3 - answer-e. 0.0610 in3
What terms defines a mass which is exactly equal to 1/12 the mass of one carbon-12
atom?
Select one:
a. Isotope number
b. Mass number
c. Mass-to-charge ratio
d. Atomic number
e. Atomic mass unit - answer-e. Atomic mass unit
, How many neutrons are there in an atom of lead whose mass number is 208?
Select one:
a. 82
b. 126
c. 208
d. 290
e. none of them - answer-b. 126
Which of these elements is chemically similar to magnesium?
Select one:
a. Sulfur
b. Calcium
c. Iron
d. Nickel
e. Potassium - answer-b. Calcium
C(graphite) and C(diamond) are examples of:
Select one:
a. isotopes of carbon.
b. allotropes of carbon.
c. the law of definite proportions.
d. different carbon ions. - answer-b. allotropes of carbon.
The 80Br- ion has
