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. A6 g
  2. B12 g
  3. C1 g
  4. D24 g
2.简单

In a chemical equation, what are the reactants?

  1. AThe new substances formed, written to the right of the arrow
  2. BThe starting substances, written to the left of the arrow
  3. CThe numbers written in front of each formula
  4. DThe catalysts written above the arrow
3.简单

What is the SI unit of energy?

  1. ANewton
  2. BKelvin
  3. CJoule
  4. DWatt
4.中等

When a nucleus emits a beta particle, how do its mass number and atomic number change?

  1. AMass number rises by 1 and atomic number stays the same
  2. BBoth fall by 1
  3. CMass number falls by 4 and atomic number falls by 2
  4. DMass number stays the same and atomic number rises by 1
5.中等

质量为 50 g、体积为 20 cm³ 的物体，其密度是多少？

  1. A1000 g/cm³
  2. B70 g/cm³
  3. C0.4 g/cm³
  4. D2.5 g/cm³
6.中等

What charge do group 16 elements such as oxygen and sulfur usually have as ions?

  1. A2−
  2. B2+
  3. C6+
  4. D1−
7.困难

Element A has 1 valence electron and element B has 7 valence electrons, both in period 3. Which statement best compares them?

  1. AA is a reactive metal and B is a reactive nonmetal
  2. BBoth are metalloids
  3. CBoth are unreactive because they are in the same period
  4. DA is a nonmetal and B is a metal
8.困难

Why does a sodium ion (Na⁺) have almost the same mass as a sodium atom?

  1. AThe only difference is one electron, which has a tiny mass
  2. BIons and atoms always have exactly the same mass
  3. CThe ion gains a neutron that balances the loss
  4. DThe ion has one fewer proton, which has a tiny mass

答案

  1. 1. B · 12 g
  2. 2. B · The starting substances, written to the left of the arrow
  3. 3. C · Joule
  4. 4. D · Mass number stays the same and atomic number rises by 1
  5. 5. D · 2.5 g/cm³
  6. 6. A · 2−
  7. 7. A · A is a reactive metal and B is a reactive nonmetal
  8. 8. A · The only difference is one electron, which has a tiny mass

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