STRAIGHTERLINE CHEMISTRY FINAL EXAM 2025 LATEST
UPDATED 300 ACTUAL EXAM QUESTIONS WITH 100% RATED
CORRECT ANSWERS 100% VERIFIED GET A+
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 - (Correct Answer)a. Law
Which of the following is a tentative explanation for a set of observations?
心的坚强决定了我们的命运。当
Select one:
我们面对挫折时，是一颗不屈的
a. Law
心让我们勇敢前行
b. Hypothesis
c. Theory
d. Phenomena
e. Prediction - (Correct 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 - (Correct 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 - (Correct 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.
心的坚强决定了我们的命运。当
c. Sugar, when heated, becomes brown.
d. Milk turns sour. 我们面对挫折时，是一颗不屈的
心让我们勇敢前行
e. Apples, when exposed to air, turn brown. - (Correct 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 - (Correct 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 - (Correct 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 - (Correct Answer)e.心的坚强决定了我们的命运。当
0.0610 in3
我们面对挫折时，是一颗不屈的
What terms defines a mass which 心让我们勇敢前行
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 - (Correct 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 - (Correct Answer)b. 126
Which of these elements is chemically similar to magnesium?
Select one:
a. Sulfur
b. Calcium
c. Iron
d. Nickel
e. Potassium - (Correct Answer)b.心的坚强决定了我们的命运。当
Calcium
我们面对挫折时，是一颗不屈的
心让我们勇敢前行
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. - (Correct Answer)b. allotropes of carbon.
The 80Br- ion has
Select one:
a. 45 protons, 35 neutrons, 45 electrons.
b. 35 protons, 45 neutrons, 34 electrons.
UPDATED 300 ACTUAL EXAM QUESTIONS WITH 100% RATED
CORRECT ANSWERS 100% VERIFIED GET A+
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 - (Correct Answer)a. Law
Which of the following is a tentative explanation for a set of observations?
心的坚强决定了我们的命运。当
Select one:
我们面对挫折时，是一颗不屈的
a. Law
心让我们勇敢前行
b. Hypothesis
c. Theory
d. Phenomena
e. Prediction - (Correct 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 - (Correct 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 - (Correct 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.
心的坚强决定了我们的命运。当
c. Sugar, when heated, becomes brown.
d. Milk turns sour. 我们面对挫折时，是一颗不屈的
心让我们勇敢前行
e. Apples, when exposed to air, turn brown. - (Correct 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 - (Correct 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 - (Correct 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 - (Correct Answer)e.心的坚强决定了我们的命运。当
0.0610 in3
我们面对挫折时，是一颗不屈的
What terms defines a mass which 心让我们勇敢前行
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 - (Correct 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 - (Correct Answer)b. 126
Which of these elements is chemically similar to magnesium?
Select one:
a. Sulfur
b. Calcium
c. Iron
d. Nickel
e. Potassium - (Correct Answer)b.心的坚强决定了我们的命运。当
Calcium
我们面对挫折时，是一颗不屈的
心让我们勇敢前行
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. - (Correct Answer)b. allotropes of carbon.
The 80Br- ion has
Select one:
a. 45 protons, 35 neutrons, 45 electrons.
b. 35 protons, 45 neutrons, 34 electrons.
