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

教师请注意： 可免费打印、复印并在课堂上使用。每份新练习题都有新的数值和独立的答案。欢迎在课程页面添加指向 ExamProblems 的链接。

姓名: ____________________   日期: ____________

1.简单

What is radioactivity?

  1. AThe flow of electrons through a metal wire
  2. BThe release of heat and light when fuels burn in air
  3. CThe release of radiation by unstable atomic nuclei
  4. DThe glow produced by any hot object
2.简单

哪种气体构成了地球空气的大部分？

  1. A氮气
  2. B氧气
  3. C氢气
  4. D二氧化碳
3.简单

What is a molecule?

  1. ATwo or more atoms held together by covalent bonds
  2. BA mixture of two different elements
  3. CThe nucleus of an atom
  4. DA single atom with a positive charge
4.中等

A reaction is at equilibrium. More of one reactant is added. According to Le Chatelier's principle, what happens?

  1. AThe equilibrium shifts toward the products
  2. BThe reaction stops completely
  3. CNothing changes
  4. DThe equilibrium shifts toward the reactants
5.中等

On an energy diagram, the products are at a lower energy than the reactants. What kind of reaction is shown?

  1. AReversible only
  2. BExothermic
  3. CNuclear
  4. DEndothermic
6.中等

Uranium-235 and uranium-238 both have 92 protons. How many more neutrons does an atom of uranium-238 have?

  1. A146
  2. B0
  3. C92
  4. D3
7.困难

A solution of acetic acid conducts electricity only weakly, while hydrochloric acid of the same concentration conducts strongly. Why?

  1. AAcetic acid only partly ionises, so it forms fewer ions
  2. BAcetic acid does not dissolve in water at all
  3. CHydrochloric acid contains metal atoms
  4. DAcetic acid forms more ions than hydrochloric acid does
8.困难

下列哪种溶液导电性最好？

  1. A溶于水的氯化钠
  2. B溶于水的糖
  3. C纯蒸馏水
  4. D与水混合的乙醇

答案

  1. 1. C · The release of radiation by unstable atomic nuclei
  2. 2. A · 氮气
  3. 3. A · Two or more atoms held together by covalent bonds
  4. 4. A · The equilibrium shifts toward the products
  5. 5. B · Exothermic
  6. 6. D · 3
  7. 7. A · Acetic acid only partly ionises, so it forms fewer ions
  8. 8. A · 溶于水的氯化钠

完整分步解答：请在 examproblems.com 上练习本主题。