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。

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姓名: ____________________   日期: ____________

1.简单

Carbon has an atomic mass of 12. What is the mass of 1 mole of carbon atoms?

  1. A24 g
  2. B6 g
  3. C12 g
  4. D1 g
2.简单

Which of these is a heterogeneous mixture?

  1. AOil and water
  2. BSalt dissolved in water
  3. CSugar dissolved in tea
  4. DAir
3.简单

哪种物质是碱？

  1. A氢氧化钠（NaOH）
  2. B盐酸（HCl）
  3. C柠檬汁（柠檬酸）
  4. D食醋（乙酸）
4.中等

A radioactive isotope has a half-life of 5 days. A sample starts with 80 g. How much is left after 10 days?

  1. A0 g
  2. B40 g
  3. C10 g
  4. D20 g
5.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. A5%
  2. B75%
  3. C25%
  4. D133%
6.中等

How many oxygen atoms are in one formula unit of calcium nitrate, Ca(NO₃)₂?

  1. A6
  2. B2
  3. C3
  4. D5
7.困难

In the reaction 2Na + Cl₂ → 2NaCl, which substance is the oxidising agent?

  1. ACl₂
  2. BNa
  3. CNaCl
  4. DNa⁺
8.困难

Ammonia (NH₃) has three bonding pairs and one lone pair on nitrogen. What is its shape?

  1. ATrigonal pyramidal
  2. BLinear
  3. CFlat triangle (trigonal planar)
  4. DTetrahedral

答案

  1. 1. C · 12 g
  2. 2. A · Oil and water
  3. 3. A · 氢氧化钠（NaOH）
  4. 4. D · 20 g
  5. 5. B · 75%
  6. 6. A · 6
  7. 7. A · Cl₂
  8. 8. A · Trigonal pyramidal

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