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Praxis Practice Questions

Praxis 5245 Practice Test Practice Questions

Praxis Chemistry: Content Knowledge (5245) — This praxis 5245 practice test gives you realistic chemistry practice with questions on atomic structure, bonding, reactions, stoichiometry, and thermodynamics. Each answer includes a clear explanation, so you can sharpen the reasoning behind Praxis Chemistry questions instead of just memorizing a final choice.

125
Total Questions
2 hours 30 minutes
Time Limit
Varies by state, often around the 150s
Passing Score
About $130-$150
Registration Fee

Free Sample Questions

Here are 5 free sample questions from our full bank of 580+ Praxis 5245 Practice Testpractice questions. Try them out below — click "Show Answer" to reveal the correct response and explanation.

1

An atom has 17 protons, 18 neutrons, and 18 electrons. Which statement correctly describes this particle?

AIt is a chloride ion with a -1 charge
BIt is a neutral chlorine atom with mass number 35
CIt is an argon ion with a +1 charge
DIt is a sulfur isotope with mass number 35
2

Which substance would be expected to have the highest boiling point based on intermolecular forces?

ACH4
BNH3
CNe
DCO2
3

For the reaction 2H2(g) + O2(g) -> 2H2O(g), how many moles of H2O can form when 5.0 moles of H2 react completely with excess O2?

A2.5 mol
B10.0 mol
C5.0 mol
D7.5 mol
4

A student mixes aqueous sodium carbonate with aqueous calcium chloride and observes a cloudy white solid. Which net ionic equation best represents the reaction?

ANa+(aq) + Cl-(aq) -> NaCl(s)
BCa2+(aq) + 2Cl-(aq) -> CaCl2(s)
C2Na+(aq) + CO3^2-(aq) -> Na2CO3(s)
DCa2+(aq) + CO3^2-(aq) -> CaCO3(s)
5

A reaction has Delta H = -85 kJ/mol. Which statement is the best interpretation of this value?

AThe reaction releases heat to the surroundings
BThe reaction absorbs heat from the surroundings
CThe products have more stored chemical energy than the reactants
DThe reaction cannot occur without a catalyst

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About the Praxis 5245 Practice Test

Format & Structure

Total Questions
125
Time Limit
2 hours 30 minutes
Format
Computer-delivered selected-response questions

Scoring & Cost

Passing Score
Varies by state, often around the 150s
Registration Fee
About $130-$150

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Frequently Asked Questions

What is the Praxis Chemistry: Content Knowledge (5245) test?

Praxis Chemistry: Content Knowledge (5245) is a Praxis Subject Assessment for candidates preparing to teach secondary chemistry. It measures chemistry content knowledge along with scientific reasoning, data interpretation, and laboratory-related understanding expected of a beginning chemistry teacher.

How many questions are on Praxis 5245?

Praxis 5245 includes about 125 selected-response questions. The items cover major chemistry domains such as atomic structure, bonding, reactions, stoichiometry, thermochemistry, equilibrium, kinetics, and laboratory practices.

How long do I have to complete Praxis Chemistry 5245?

The time limit is 2 hours and 30 minutes. With roughly 125 questions, pacing is important; many test takers benefit from answering straightforward calculation and concept items first, then returning to longer data-based questions.

What topics should I study for Praxis 5245?

A strong study plan should include atomic and molecular structure, chemical bonding, periodic trends, reactions, gases, solutions, stoichiometry, kinetics, equilibrium, acids and bases, thermodynamics, and lab safety. A praxis chemistry practice test should also ask you to interpret graphs, apply mole relationships, and reason from balanced equations.

What score do I need to pass Praxis 5245?

Passing scores are set by states and licensing agencies, so there is not one national cutoff. Many states list Praxis Chemistry 5245 passing scores in the 150s, but you should confirm the exact requirement for your state before scheduling.

How much does Praxis 5245 cost?

The registration fee is commonly around $130-$150, depending on current ETS pricing and location details. Extra fees can apply for changes, rescheduling, late registration, or additional score reports, so review current registration information before you book a date.

Is Praxis 5245 computer-delivered?

Yes. Praxis Chemistry: Content Knowledge (5245) is administered as a computer-delivered selected-response assessment. You should be comfortable reading passages, tables, equations, and answer choices on screen before test day.

How should I use a praxis 5245 practice test to study?

Begin with a mixed timed set so you can see whether your mistakes are coming from content gaps, math setup, or pacing. Then review each explanation carefully and sort missed questions by topic: stoichiometry, bonding, thermodynamics, reactions, and other high-yield areas deserve targeted follow-up.

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