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

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1.简单

What is a cation?

  1. AA negatively charged ion
  2. BA neutral atom
  3. CA molecule with no charge
  4. DA positively charged ion
2.简单

What is a molecule?

  1. AThe nucleus of an atom
  2. BTwo or more atoms held together by covalent bonds
  3. CA mixture of two different elements
  4. DA single atom with a positive charge
3.简单

What is an alpha particle made of?

  1. AA single high-energy electron
  2. B2 protons and 2 neutrons
  3. CPure electromagnetic energy
  4. D1 proton and 1 electron
4.中等

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

  1. AMgO
  2. BMg₂O
  3. CMgO₂
  4. DMg₂O₂
5.中等

How does a catalyst speed up a reaction?

  1. AIt adds extra reactant to the mixture
  2. BIt provides a different pathway with a lower activation energy
  3. CIt raises the temperature of the reactants so they move faster
  4. DIt makes the reaction more exothermic
6.中等

Which substance is a non-electrolyte when dissolved in water?

  1. ASodium chloride
  2. BPotassium chloride
  3. CHydrochloric acid
  4. DGlucose
7.困难

将等体积的 1 M HCl 和 1 M NaOH 混合。所得溶液的 pH 大约是多少？

  1. A14
  2. B1
  3. C7
  4. D3.5
8.困难

用最小的整数配平 __Fe + __O₂ → __Fe₂O₃。系数是多少？

  1. A2, 1, 1
  2. B2, 3, 1
  3. C4, 3, 4
  4. D4, 3, 2

答案

  1. 1. D · A positively charged ion
  2. 2. B · Two or more atoms held together by covalent bonds
  3. 3. B · 2 protons and 2 neutrons
  4. 4. A · MgO
  5. 5. B · It provides a different pathway with a lower activation energy
  6. 6. D · Glucose
  7. 7. C · 7
  8. 8. D · 4, 3, 2

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