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100+ Free Chemistry License (STT) Practice Questions

Pass your Saudi Specialized Professional License Test - Chemistry (ETEC/Qiyas) exam on the first try — instant access, no signup required.

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Key Facts: Chemistry License (STT) Exam

Saudi chemistry teachers take ETEC/Qiyas professional licensure tests—a general pedagogical MCQ exam plus a specialized chemistry subject-knowledge (STT) exam—after meeting Ministry eligibility. This free bank offers 100 practice questions across stoichiometry, bonding, equilibrium, organic, analytical, safety, and pedagogy domains.

Sample Chemistry License (STT) Practice Questions

Try these sample questions to test your Chemistry License (STT) exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1What does the atomic number of an element represent?
A.Number of protons in the nucleus
B.Number of neutrons in the nucleus
C.Sum of protons and neutrons
D.Number of electrons in the outermost shell only
Explanation: Atomic number equals the number of protons and defines the element's identity; in a neutral atom it also equals the electron count.
2Isotopes of the same element differ in their number of:
A.Neutrons
B.Protons
C.Electrons in a neutral atom
D.Orbital shapes
Explanation: Isotopes share the same proton count (same element) but differ in neutron number, giving different mass numbers.
3Across a period from left to right, atomic radius generally:
A.Decreases
B.Increases
C.Remains constant
D.First increases then decreases uniformly
Explanation: Effective nuclear charge increases across a period, pulling valence electrons closer and shrinking atomic radius.
4Which property generally increases down a group in the periodic table?
A.Atomic radius
B.First ionization energy
C.Electronegativity
D.Effective nuclear charge felt by valence electrons
Explanation: Additional electron shells down a group place outer electrons farther from the nucleus, increasing atomic radius.
5The electron configuration 1s² 2s² 2p⁶ 3s² 3p⁴ corresponds to which element?
A.Sulfur
B.Silicon
C.Chlorine
D.Phosphorus
Explanation: Counting electrons: 2+2+6+2+4 = 16, which is sulfur (Z = 16).
6In Rutherford's gold-foil experiment, most alpha particles passed through because:
A.Atoms are mostly empty space
B.Alpha particles have no charge
C.Gold atoms repel all alpha particles equally
D.Electrons absorb alpha particles completely
Explanation: Rutherford concluded that a tiny, dense, positively charged nucleus is surrounded by mostly empty space.
7Elements in the same group of the periodic table share:
A.The same number of valence electrons
B.The same atomic mass
C.The same number of energy levels
D.Identical chemical reactivity in all conditions
Explanation: Group members have the same valence electron count, leading to similar bonding patterns and periodic trends.
8Which element has the highest first ionization energy?
A.Neon
B.Sodium
C.Aluminum
D.Magnesium
Explanation: Neon has a stable noble-gas electron configuration; removing an electron requires very high energy.
9What is the approximate molar mass of calcium carbonate (CaCO₃)?
A.100 g/mol
B.74 g/mol
C.56 g/mol
D.120 g/mol
Explanation: Ca (40) + C (12) + 3×O (48) ≈ 100 g/mol.
10How many orbitals are in a 3d subshell?
A.5
B.3
C.7
D.10
Explanation: A d subshell always has five orbitals (dxy, dxz, dyz, dx²−y², dz²), regardless of principal quantum number.

About the Chemistry License (STT) Exam

The Saudi Specialized Professional License Test in Chemistry is the ETEC/Qiyas subject-knowledge licensure examination for chemistry teachers seeking the professional teaching license. It measures deep chemistry content knowledge across stoichiometry, bonding, equilibrium, organic and analytical chemistry, thermochemistry and kinetics, laboratory safety, and chemistry pedagogy aligned to Saudi secondary chemistry standards—distinct from the integrated general science STT. This free practice bank offers 100 multiple-choice questions for STT preparation.

Assessment

Saudi professional licensure for chemistry teachers is administered by Qiyas under ETEC. Candidates generally must meet Ministry eligibility requirements and pass a general pedagogical MCQ test (GTT) plus a specialized chemistry subject-knowledge MCQ test (STT). Tests are computer-based multiple-choice exams registered through Qiyas e-services. This specialization is distinct from the integrated general science STT and from separate biology or physics specialist licensure tests.

Time Limit

Commonly about two hours of answering time for Qiyas professional tests, plus early arrival for identity verification; confirm the duration shown for your registered session.

Passing Score

Older licensing documentation cited 50% on subject and pedagogical components; current prep sources often cite about 60% per component. A single fixed public pass mark for the chemistry STT was not confirmed on the official pages reviewed for this bank. Verify the current standard in Qiyas e-services.

Exam Fee

Commonly reported at about 100 SAR per licensure test component, with higher fees sometimes cited for repeat attempts. Confirm the current fee in the Qiyas e-services portal before payment. (National Center for Assessment (Qiyas), under the Education and Training Evaluation Commission (ETEC))

Chemistry License (STT) Exam Content Outline

15%

Stoichiometry and Chemical Reactions

Mole concept, balancing equations, limiting reactants, percent yield, redox, and precipitation.

13%

Chemical Bonding and Molecular Structure

Ionic, covalent, and metallic bonding; Lewis structures; VSEPR; polarity; and intermolecular forces.

13%

Solutions, Acids, Bases, and Equilibrium

Molarity, pH, titration, Le Chatelier's principle, Ksp, and buffers.

10%

Atomic Structure and Periodic Trends

Subatomic particles, isotopes, electron configuration, and periodic trends.

11%

Organic Chemistry

Functional groups, hydrocarbons, nomenclature, isomerism, and polymers.

11%

Chemistry Pedagogy and Assessment

Inquiry teaching, misconceptions, formative assessment, PCK, and ETEC licensure context.

10%

Analytical Chemistry

Significant figures, titration, chromatography, spectroscopy, and error analysis.

9%

Thermochemistry and Kinetics

Enthalpy, reaction rates, activation energy, catalysts, and Gibbs free energy.

8%

Laboratory Safety and Skills

PPE, chemical storage, fire safety, GHS, SDS, fume hoods, and spill response.

How to Pass the Chemistry License (STT) Exam

What You Need to Know

  • Passing score: Older licensing documentation cited 50% on subject and pedagogical components; current prep sources often cite about 60% per component. A single fixed public pass mark for the chemistry STT was not confirmed on the official pages reviewed for this bank. Verify the current standard in Qiyas e-services.
  • Assessment: Saudi professional licensure for chemistry teachers is administered by Qiyas under ETEC. Candidates generally must meet Ministry eligibility requirements and pass a general pedagogical MCQ test (GTT) plus a specialized chemistry subject-knowledge MCQ test (STT). Tests are computer-based multiple-choice exams registered through Qiyas e-services. This specialization is distinct from the integrated general science STT and from separate biology or physics specialist licensure tests.
  • Time limit: Commonly about two hours of answering time for Qiyas professional tests, plus early arrival for identity verification; confirm the duration shown for your registered session.
  • Exam fee: Commonly reported at about 100 SAR per licensure test component, with higher fees sometimes cited for repeat attempts. Confirm the current fee in the Qiyas e-services portal before payment.

Keys to Passing

  • Complete 500+ practice questions
  • Score 80%+ consistently before scheduling
  • Focus on highest-weighted sections
  • Use our AI tutor for tough concepts

Chemistry License (STT) Study Tips from Top Performers

1Review secondary chemistry domains—stoichiometry, bonding, equilibrium, organic chemistry, and analytical methods—then practise timed MCQs to match Qiyas pacing.
2Do not neglect the separate general pedagogical licensure component (GTT) if your eligibility requires both tests; this bank practises only the chemistry STT specialization.
3Rebuild weak areas systematically: if you miss equilibrium or organic nomenclature items, revisit those units before moving to spectroscopy or kinetics questions.
4Practise under timed conditions with roughly 1–2 minutes per item to match the pacing of Qiyas professional computerized tests.
5Connect content review to pedagogy and lab-safety items—know common student misconceptions (e.g., bonds breaking inside ions on dissolution) and effective inquiry-based responses.

Frequently Asked Questions

Who needs the Saudi specialized chemistry professional license test?

The chemistry licensure pathway targets teachers of chemistry in Saudi public schools who must meet ETEC/Qiyas professional license requirements alongside Ministry eligibility rules. Teachers of integrated general science or other single sciences may sit different STT exams. Confirm your category in Qiyas e-services.

How is this different from the general science license test?

The chemistry STT emphasizes deep single-discipline content—stoichiometry, bonding, equilibrium, organic and analytical chemistry, and chemistry pedagogy. The general science STT tests integrated breadth across biology, chemistry, physics, and earth science at a shallower depth per discipline.

Is there only one test for the professional license?

No. Saudi teacher licensure commonly requires a general pedagogical multiple-choice test (GTT) plus a specialized subject-knowledge test (STT) in chemistry. This practice bank focuses on the chemistry specialization, not the separate general pedagogical component.

How many questions are on the live STT chemistry exam?

Public prep materials for specialized teacher tests often describe roughly 60–88 items in a timed computerized session. ETEC does not always publish one fixed count on the main pages reviewed for this bank. This free practice set has 100 chemistry MCQs.

What is the passing score and exam fee?

Older documentation cited 50% on subject and pedagogical components; current prep sources often cite about 60% per component and about 100 SAR per test. These figures were not confirmed as a single stable public table on the official Qiyas pages reviewed for this bank. Always verify current rules in Qiyas e-services before registering.