Question 1
A chemistry student balances the reaction between propane and oxygen gas: C3H8 + x O2 -> 3 CO2 + 4 H2O. What stoichiometric coefficient x is required to balance the oxygen atoms on both sides of the equation?
Correct Answer:
5
Question 2
In an experiment, 2.0 moles of hydrogen gas (H2) react completely with excess nitrogen gas to produce ammonia according to N2 + 3 H2 -> 2 NH3. How many moles of NH3 are produced?
Correct Answer:
1.33 moles
Question 3
A student mixes aqueous sodium hydroxide (NaOH) and hydrochloric acid (HCl) in a calorimeter. The temperature of the solution increases from 21.5°C to 28.2°C. How should this chemical reaction be classified?
Correct Answer:
Exothermic reaction because thermal energy is released to the solution
Question 4
Which of the following changes will increase the rate of reaction between solid calcium carbonate marble chips (CaCO3) and hydrochloric acid (HCl)?
Correct Answer:
Crushing the marble chips into fine powder to increase surface area
Question 5
According to the Law of Conservation of Mass, what must be true about a closed system during a synthesis reaction between iron and sulfur (Fe + S -> FeS)?
Correct Answer:
The total mass of iron sulfide produced equals the combined mass of iron and sulfur reacted
Question 1
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Prepare with the CCRA Science Grade 11 Practice Questions - Oklahoma College- and Career-Readiness Assessment Science Content, Grade 11 Exam practice quiz. This question bank includes 100 questions covering energy, water, light, reaction, and thermal. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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CCRA Science Grade 11 Practice Questions - Oklahoma College- and Career-Readiness Assessment Science Content, Grade 11 Exam

This practice set contains 100 questions from the matching question bank and focuses on energy, water, light, reaction, and thermal. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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