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 the smallest particle of an element that still has the chemical properties of that element?

  1. AA nucleus
  2. BAn atom
  3. CA proton
  4. DAn electron
2.简单

Which gas is needed for a fuel to burn (combustion)?

  1. ACarbon dioxide
  2. BNitrogen
  3. CHelium
  4. DOxygen
3.简单

一个原子有 6 个质子、6 个中子和 6 个电子。它的质量数是多少？

  1. A0
  2. B6
  3. C12
  4. D18
4.中等

0.5 mol of KCl is dissolved to make 250 mL of solution. What is its molarity?

  1. A125 M
  2. B0.125 M
  3. C0.5 M
  4. D2 M
5.中等

What is the name of the compound CaCO₃?

  1. ACalcium oxide
  2. BCalcium carbide
  3. CCarbon calcium trioxide
  4. DCalcium carbonate
6.中等

Water has a high specific heat capacity. How does this help the human body?

  1. AIt makes water a poor solvent for salts
  2. BIt makes the blood more acidic
  3. CIt allows oxygen to dissolve in water more easily
  4. DIt helps keep body temperature stable
7.困难

Gently heating DNA separates its two strands, but each strand stays in one piece. Why?

  1. AEach strand is held together by hydrogen bonds, while the two strands are joined by covalent bonds
  2. BHeat converts DNA into a protein
  3. CThe strands are held together by weak hydrogen bonds, while each strand's backbone is covalent
  4. DThe two strands are joined by ionic bonds that melt first
8.困难

下列哪个方程式配平正确？

  1. A2Na + Cl₂ → 2NaCl
  2. BNa + Cl → NaCl₂
  3. CNa + Cl₂ → NaCl
  4. D2Na + Cl₂ → NaCl₂

答案

  1. 1. B · An atom
  2. 2. D · Oxygen
  3. 3. C · 12
  4. 4. D · 2 M
  5. 5. D · Calcium carbonate
  6. 6. D · It helps keep body temperature stable
  7. 7. C · The strands are held together by weak hydrogen bonds, while each strand's backbone is covalent
  8. 8. A · 2Na + Cl₂ → 2NaCl

完整分步解答：请在 examproblems.com 上练习本主题。