Praxis II (5435) - General Science:
Content Knowledge Exam Questions &
Answers (Grade A+)
Which of the following is a source of nonrenewable energy? -
correct answer ✅Coal
Which of the following describes the process skill of concluding? -
correct answer ✅Making a determination based on the results of a
controlled experiment
A chemistry experiment is performed to determine the effect of a
nonvolatile solute on the boiling point of water. Three trials are
performed in which 10 mg, 20 mg and 30 mg of salt are added to
500 ml of distilled water. Each solution is heated on a hot plate, and
the elevated boiling points are recorded. Which of the following
correctly identifies the independent and dependent variables. -
correct answer ✅The independent variable is he amount of salt,
and the dependent variable is the temperature at which the water
boils.
Which of the following is NOT true concerning forming and testing
hypotheses? -
correct answer ✅A good hypothesis will not be disproved by
testing.
,Praxis II (5435) - General Science:
Content Knowledge Exam Questions &
Answers (Grade A+)
Which of the following is the correct expression of 0.0034050 in
scientific notation? -
correct answer ✅3.4050 x 10(-3)
Which of the following numbers has 4 significant figures? -
correct answer ✅0.003020
What is the correct expression of 91,000 x 87,000 using scientific
notation and significant figures? -
correct answer ✅7.9 x 10(9)
Students experimentally determine that the specific heat of copper
is 0.410 L/gC. If the known value of the specific heat of copper is
0.385 j/gC, what is the percent error? -
correct answer ✅6.49%
Two balances in a classroom laboratory are used to determine the
mass of an object. The actual mass of the object is 15.374 grams.
Which of the following statements is true concerning the accuracy
and precision of these two balances? -
correct answer ✅The digital balance is both more accurate and
more precise.
, Praxis II (5435) - General Science:
Content Knowledge Exam Questions &
Answers (Grade A+)
Which of the following subskills best fits the process skill of
observing? -
correct answer ✅Using the five senses to collect evidence and
write descriptions.
Which of the following sets of quantities are equivalent? -
correct answer ✅2,310 mg and 2.310 g
Which of the following best describes the relationship of this set of
data? -
correct answer ✅Low positive correlation
Which of the following is NOT true concerning correlation? -
correct answer ✅Correlation can show cause and effect.
Which of the following is NOT a recommended storage practice for
laboratory chemicals? -
correct answer ✅Chemicals may be routinely stored on bench
tops.
Content Knowledge Exam Questions &
Answers (Grade A+)
Which of the following is a source of nonrenewable energy? -
correct answer ✅Coal
Which of the following describes the process skill of concluding? -
correct answer ✅Making a determination based on the results of a
controlled experiment
A chemistry experiment is performed to determine the effect of a
nonvolatile solute on the boiling point of water. Three trials are
performed in which 10 mg, 20 mg and 30 mg of salt are added to
500 ml of distilled water. Each solution is heated on a hot plate, and
the elevated boiling points are recorded. Which of the following
correctly identifies the independent and dependent variables. -
correct answer ✅The independent variable is he amount of salt,
and the dependent variable is the temperature at which the water
boils.
Which of the following is NOT true concerning forming and testing
hypotheses? -
correct answer ✅A good hypothesis will not be disproved by
testing.
,Praxis II (5435) - General Science:
Content Knowledge Exam Questions &
Answers (Grade A+)
Which of the following is the correct expression of 0.0034050 in
scientific notation? -
correct answer ✅3.4050 x 10(-3)
Which of the following numbers has 4 significant figures? -
correct answer ✅0.003020
What is the correct expression of 91,000 x 87,000 using scientific
notation and significant figures? -
correct answer ✅7.9 x 10(9)
Students experimentally determine that the specific heat of copper
is 0.410 L/gC. If the known value of the specific heat of copper is
0.385 j/gC, what is the percent error? -
correct answer ✅6.49%
Two balances in a classroom laboratory are used to determine the
mass of an object. The actual mass of the object is 15.374 grams.
Which of the following statements is true concerning the accuracy
and precision of these two balances? -
correct answer ✅The digital balance is both more accurate and
more precise.
, Praxis II (5435) - General Science:
Content Knowledge Exam Questions &
Answers (Grade A+)
Which of the following subskills best fits the process skill of
observing? -
correct answer ✅Using the five senses to collect evidence and
write descriptions.
Which of the following sets of quantities are equivalent? -
correct answer ✅2,310 mg and 2.310 g
Which of the following best describes the relationship of this set of
data? -
correct answer ✅Low positive correlation
Which of the following is NOT true concerning correlation? -
correct answer ✅Correlation can show cause and effect.
Which of the following is NOT a recommended storage practice for
laboratory chemicals? -
correct answer ✅Chemicals may be routinely stored on bench
tops.
