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 are the usual units of molar mass?

  1. Amol/L
  2. Bg/mol
  3. Cmol/g
  4. Dg/L
2.简单

Which element has the symbol Fe?

  1. AFermium
  2. BIron
  3. CFluorine
  4. DFrancium
3.简单

How many moles of oxygen atoms are in 1 mole of carbon dioxide, CO₂?

  1. A0.5
  2. B1
  3. C3
  4. D2
4.中等

What percentage of the mass of water (H₂O, 18 g/mol) is hydrogen (H = 1 g/mol)?

  1. AAbout 5.6%
  2. BAbout 67%
  3. CAbout 11%
  4. DAbout 89%
5.中等

Magnesium forms Mg²⁺ ions and oxygen forms O²⁻ ions. What is the formula of magnesium oxide?

  1. AMgO₂
  2. BMg₂O₂
  3. CMg₂O
  4. DMgO
6.中等

Glucose has the molecular formula C₆H₁₂O₆. What is its empirical formula?

  1. ACHO
  2. BCH₂O
  3. CC₂H₄O₂
  4. DC₆H₁₂O₆
7.困难

Magnesium burns as 2Mg + O₂ → 2MgO. What mass of MgO (40 g/mol) forms from 48 g of Mg (24 g/mol)?

  1. A160 g
  2. B40 g
  3. C48 g
  4. D80 g
8.困难

Burning a match is strongly exothermic, so why does it not catch fire until it is struck?

  1. AStriking pushes extra oxygen into the chemicals of the match head
  2. BStriking makes the reaction endothermic
  3. CThe match must first absorb all its energy from the air
  4. DStriking supplies the activation energy to start the reaction

答案

  1. 1. B · g/mol
  2. 2. B · Iron
  3. 3. D · 2
  4. 4. C · About 11%
  5. 5. D · MgO
  6. 6. B · CH₂O
  7. 7. D · 80 g
  8. 8. D · Striking supplies the activation energy to start the reaction

完整分步解答：请在 examproblems.com 上练习本主题。