护理入学考试化学练习卷（附答案）

免费可打印的护理入学考试化学练习卷：8 道题，从简单到考试水平，附答案。可打印或另存为 PDF。

新练习卷在线练习，附提示

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姓名: ____________________   日期: ____________

1.简单

What does the coefficient 3 in "3H₂O" mean?

  1. AWater has a charge of 3
  2. BEach water molecule has three oxygen atoms
  3. CThere are three molecules (or moles) of water
  4. DEach molecule of water contains three hydrogen atoms
2.简单

一个中性原子有 11 个质子。它有多少个电子？

  1. A10
  2. B11
  3. C22
  4. D12
3.简单

About what percentage of dry air is oxygen?

  1. A1%
  2. B78%
  3. C50%
  4. D21%
4.中等

What are isomers?

  1. ACompounds with the same molecular formula but different structures
  2. BAtoms of the same element with different numbers of neutrons
  3. CCompounds with the same structure but different molecular formulas
  4. DMolecules that contain the same number of bonds
5.中等

Which statement describes a saturated fat?

  1. AIts fatty acid chains have no carbon–carbon double bonds
  2. BIt contains no carbon atoms
  3. CIt is always liquid at room temperature
  4. DIts fatty acid chains have many carbon–carbon double bonds
6.中等

A reaction has a theoretical yield of 20 g, but only 15 g of product is collected. What is the percent yield?

  1. A25%
  2. B133%
  3. C75%
  4. D5%
7.困难

将 2 mol H₂ 和 2 mol O₂ 混合，按 2H₂ + O₂ → 2H₂O 反应。哪种反应物是限量试剂？

  1. A水，因为它是产物
  2. B氢气，因为 2 mol H₂ 只用掉 1 mol O₂
  3. C都不是，因为量相等
  4. D氧气，因为氧气比氢气少
8.困难

将等体积的 1 M HCl 和 1 M NaOH 混合。所得溶液的 pH 大约是多少？

  1. A7
  2. B1
  3. C14
  4. D3.5

答案

  1. 1. C · There are three molecules (or moles) of water
  2. 2. B · 11
  3. 3. D · 21%
  4. 4. A · Compounds with the same molecular formula but different structures
  5. 5. A · Its fatty acid chains have no carbon–carbon double bonds
  6. 6. C · 75%
  7. 7. B · 氢气，因为 2 mol H₂ 只用掉 1 mol O₂
  8. 8. A · 7

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