2013 AP Chemistry化学真题系列之选择题免费下载

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2013 AP Chemistry Practice Exam Multiple Choice Free Download

2013 AP 化学模考选择题部分免费下载

此套Section I试卷共分计时1小时30分钟组成

共60题

仅限使用铅笔，无计算器

考试时会提供花常用的等式与常量

以及化学元素周期表

完整版下载链接见文末

部分真题预览：

1）Complete combustion of a sample of a hydrocarbon in excess oxygen produces equimolar quantities of carbon dioxide and water. Which of the following could be the molecular formula of the compound?

C₂H₂

C₂H₆

C₄H₈

C₆H₆

2)Based on the data in the table above, which of the following liquid substances has the weakest intermolecular forces?

C₆H₆(l)

C₂H₅OH(l)

CH₃OH(l)

C₂H₆O₂(l)

3)Based on the data in the table above, which of the following correctly predicts the relative strength of the attraction of Zn²⁺, Ca²⁺, and Ba²⁺ ions to water molecules in a solution, from strongest to weakest, and provides the correct reason?

Zn²⁺ > Ca²⁺ > Ba²⁺ because the smaller ions have a stronger coulombic attraction to water

Zn²⁺ > Ca²⁺ > Ba²⁺ because the smaller ions are more electronegative

Ba²⁺ > Ca²⁺ > Zn²⁺ because the larger ions are more polarizable

Ba²⁺ > Ca²⁺ > Zn²⁺ because the larger ions are less electronegative

4)Zn(s) is used to reduce other compounds in chemical reactions. If a chemist needs a substance that is more effective in its reducing ability, which of the following species would be the best choice?

Na

H⁺

K⁺

Cl⁻

5) In the diagram above, which of the labeled arrows identifies hydrogen bonding in water?

A

B

C

D

6) A kinetics experiment is set up to collect the gas that is generated when a sample of chalk, consisting primarily of solid CaCO₃ , is added to a solution of ethanoic acid, CH₃COOH. The rate of reaction between CaCO₃ and CH₃COOH is determined by measuring the volume of gas generated at 25°C and 1 atm as a function of time. Which of the following experimental conditions is most likely to increase the rate of gas production?

Decreasing the volume of ethanoic acid solution used in the experiment

Decreasing the concentration of the ethanoic acid solution used in the experiment

Decreasing the temperature at which the experiment is performed

Decreasing the particle size of the CaCO₃ by grinding it into a fine powder

2013 AP Chemistry化学模考MC选择题完整版答案免费下载

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2013 AP Chemistry Sample Exam Multiple Choice Free Download

2013 AP 化学样卷选择题部分免费下载

此套Section I试卷共分计时1小时30分钟组成

共75题

仅限使用铅笔，无计算器

考试时会提供花常用的等式与常量

以及化学元素周期表

完整版真题资料可以底部二维码免费领取↓↓↓