2014 AP Chemistry化學(xué)真題系列之選擇題免費(fèi)下載

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2014 AP Chemistry Practice Exam Multiple Choice Free Download

2014 AP 化學(xué)模考選擇題部分免費(fèi)下載

此套Section I試卷共分計(jì)時(shí)1小時(shí)30分鐘組成

共50題

僅限使用鉛筆，無計(jì)算器

考試時(shí)會(huì)提供花常用的等式與常量

以及化學(xué)元素周期表

完整版下載鏈接見文末

部分真題預(yù)覽：

1）According to the information in the table above, a 1.00g sample of which of the following contains the greatest mass of oxygen?

1. Na₂O
2. MgO
3. K₂O
4. CaO

2)Which of the following could be the identity of a white crystalline solid that exhibits the following properties?

• It melts at 320°C
• It does not conduct electricity as a solid.
• It conducts electricity in an aqueous solution.

1. ?C₆H₁₂O₆(s)
2. NaOH(s)
3. SiO₂(s)
4. Cu(s)

3)Which of the following correctly identifies which has the higher first-ionization energy, Cl or Ar and supplies the best justification?

1. Cl, because of its higher electronegativity
2. Cl, because of its higher electron affinity
3. Ar, because of its completely filled valence shell
4. Ar, because of its higher effective nuclear charge

4)A sealed rigid vessel contains BaO₂(s) in equilibrium with BaO(s)?and O₂(g) as represented by the equation above. Which of the following changes will increase the amount of BaO₂(s) in the vessel?

1. Removing a small amount of O2(g)
2. Removing a small amount of BaO(s)
3. Adding He(g) to the vessel
4. Lowering the temperature

5) Which of the following best helps to explain why the value of Δ?H°?for the dissolving of CaF₂(aq) in water is positive?

1. CaF₂(s) is insoluble in water.
2. CaF₂(s) dissolves in water to form CaF₂(aq)?particles.
3. Ca²⁺? ions have very strong ion-ion interactions with F-? ions in the crystal lattice.
4. Ca^2+? ions have very strong ion-dipole interactions with water molecules in the solution.

6)Under which of the following conditions of temperature and pressure will H₂ gas be expected to behave most like an ideal gas?

1. 50 K and 0.10 atm
2. 50 K and 5.0 atm
3. 500 K and 0.10 atm
4. 500 K and 50 atm

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