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化学 CBE — Practice Tests & Mock Exams

德州 CBE 备考 · TEKS §112.43(非 AP® Chemistry)。原子结构、化学键、反应、化学计量学、气体定律、溶液、热化学和核化学。本服务为通过 UT High School / Texas Tech K-12 获得 CBE 学分的德州高中水平 Chemistry 备考;非 College Board 的 AP® Chemistry 考试备考。AP® 是 College Board 的注册商标,与本产品无关。

Built for the Texas CBE — also used by students in 9 states and 5 countries Free sample — no signup 仅限德州 CBE — 非 College Board 的 AP® 考试备考

Practice tests & mock exams

Free practice gives instant feedback on every answer. The full mock mirrors the real exam's length and timing.

Semester A
50 questions · 180 min · 80% to pass
Free practice
Semester B
50 questions · 180 min · 80% to pass
Free practice
练习是怎样运转的

一份告诉你下一步该做什么的模拟考

光有分数教不了什么。每一次限时作答都按主题计分,所以结果是一张"该练什么"的清单,而不是一个让人沮丧的数字。

1
做一次限时模拟考
完整长度、真实限时,每次从题库重新抽取。
2
看清哪些主题在扣你的分
按主题统计正确率,汇总该科目的每一次作答,而不只是最近一次。
3
主攻最弱的主题,然后重考
针对那一个主题的集中题组,没做过的题优先。然后再考一次,看着清单变短。

How the practice works

A worked solution on every question
Not just the letter. Each answer opens into the full reasoning, so a wrong answer teaches you something instead of just costing a point.
Full-length mocks under the real clock
Each mock is drawn at random from a much larger pool, so you can sit it again and again and meet new questions each time.
You see which categories are weak
Accuracy is tracked per reporting category, and every question you miss lands in a wrong-answer notebook you can work through later.
Six months, re-take as often as you like
One purchase covers the whole prep window — practice, mock, review, repeat, at whatever pace the exam date allows.
Already took a free practice? Here's what your score means.
85%+ cold
You're likely ready for the official 化学 Credit by Examination. Register with your counselor and take 1–2 full timed mocks to lock it in.
70–85%
Solid foundation, real prep needed. 4–6 weeks of timed mocks with AI explanations on every wrong answer.
Under 70%
Concept-level gaps. Start with the Concept Lessons below, then return to practice once the underlying topic clicks.

Passing-score thresholds vary by district (Texas state code: 80% for §28.023 acceleration, 70% for §74.24 prior-instruction credit). Confirm your specific district's threshold with your school counselor in writing.

Recommended prep

Students usually take 代数1 before 化学. You can still start here anytime — this is a study-order guide, not a requirement.

Learn the Concepts

Visual lessons that build 化学 from first principles — diagrams, worked examples, embedded practice.

What's on the 化学 CBE

Every TEKS standard the official exam covers — and the exact topics our practice questions target.

SEMESTER A
TEKS 1A-7D
1A-2DScientific Methods and Chemical Safetytemperature, solution, acid, molar mass, titration
3A-4CScience and Societyconcentration, temperature, catalyst, molar mass, solution, percent yield, synthesis
5A-6EThe Periodic Table and Trendsionization energy, atomic number, electron configuration, electronegativity, molar mass, solution, nuclear
6A-7DAtoms, Atomic Theory and Compoundselectron configuration, molar mass, isotope, covalent bond, empirical formula, oxidation, atomic number
SEMESTER B
TEKS 8A-14C
8A-8DMatter in Chemical Substancesmolar mass, empirical formula, mole, solution, temperature
9A-9DMatter in Chemical Reactionspercent yield, acid, balanced equation, solution, molar mass, chemical reaction, combustion
10A-10CGas Behaviorpressure, temperature, molar mass, ideal gas, gas law, mole
11A-12ESolutionssolution, concentration, pH, acid, molar mass, base, molarity
13A-13DEnergy in Reactionstemperature, equilibrium, exothermic, combustion, mole, chemical reaction, endothermic
14A-14CNuclear Chemistryhalf-life, nuclear, isotope, atomic number

化学 CBE — Frequently asked questions

化学 CBE 考试涵盖哪些主题?

化学 CBE 涵盖科学过程与实验室安全、原子结构、周期表与周期性、化学键、化学反应与方程式、化学计量、气体定律与溶液、热化学以及核化学入门。TEKS §112.43 中每个报告类别都会在 A 学期和 B 学期的模拟考试中均匀抽样。

化学 CBE 难度如何?

考试包含概念记忆(原子结构、化学键类型、周期性趋势)和定量解题(摩尔-质量换算、化学计量、气体定律、溶液摩尔浓度)。约 30–40% 的题目是计算题。在我们的模拟考试中得 80% 以上的学生通常首次参加正式考试就能通过。

化学 CBE 考试时长多少?

考试约 3 小时,约 50–55 道题。我们的模拟考试在长度和题型分布上完全相同——概念题、基于示意图的题(原子模型、相图)和定量题——让你的节奏练习更精准。

需要背下整个周期表吗?

不需要全部——但你必须熟练掌握其中的规律。CBE 考试通常会提供周期表参考资料,所以关键是读对:知道金属/非金属/类金属的位置,识别原子半径、电离能和电负性的趋势,并根据族号预测常见离子电荷。

化学 CBE 有实验部分吗?

没有实操实验,但会有实验室安全、仪器辨识、实验设计和数据解读相关的题目。约 15–20% 的题目考察科学方法理解力——对照、变量、有效数字和图表阅读。

化学 CBE 需要计算器吗?

需要——允许使用科学计算器或图形计算器,化学计量、气体定律和摩尔浓度题目都会用到。我们的练习题假定考生使用计算器,因此你可以用考试当天将使用的同一种工具来练习。

化学 CBE 的及格分数是多少?

70%——与 UT High School 的所有 CBE 考试相同。建议在全长模拟考试中争取 85% 以上,因为化学计量和气体定律计算题的难度会根据你这次考试所抽取的 TEKS 标准有较大波动。

我不在德州 — 这里的化学备考还适用吗?

适用。化学的核心内容——原子结构、周期性趋势、化学键、化学计量、气体定律、热化学——在所有州的高中化学课程和大多数国际项目中都是通用的。我们的题目对齐 TEKS,但化学本身是相同的。70% 的及格线是德州 CBE 特有的;在其他州,练习仍能培养您的课程或 AP 化学考试所测试的技能。

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