Scheda di esercizi di Chimica per i test di ammissione a infermieristica con soluzioni

Scheda di esercizi di Chimica per i test di ammissione a infermieristica gratuita e stampabile: 8 esercizi dal livello facile a quello d’esame, con le soluzioni. Stampala o salvala come PDF.

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Nome: ____________________   Data: ____________

1.Facile

Which state of matter has a fixed volume but takes the shape of its container?

  1. APlasma
  2. BSolid
  3. CLiquid
  4. DGas
2.Facile

What is plasma, as a state of matter?

  1. AThe liquid part of blood
  2. BA solid that conducts electricity
  3. CA liquid that has been cooled below its freezing point
  4. DA very hot gas in which atoms have lost electrons and become ions
3.Facile

What is an acid–base indicator?

  1. AA substance that changes colour depending on pH
  2. BA gas given off by acids
  3. CA device that measures temperature
  4. DA substance that neutralises every acid
4.Media

Normal saline (0,9% NaCl) is used for IV fluids. How is it described compared with blood?

  1. AHypotonic
  2. BHypertonic
  3. CIsotonic
  4. DSaturated
5.Media

How many covalent bonds does a carbon atom usually form?

  1. A2
  2. B3
  3. C1
  4. D4
6.Media

How many lone (non-bonding) pairs of electrons are on the oxygen atom in a water molecule?

  1. A2
  2. B0
  3. C1
  4. D4
7.Difficile

What fraction of a radioactive isotope remains after three half-lives?

  1. A1/6
  2. B1/9
  3. C1/8
  4. D1/3
8.Difficile

At room temperature chlorine (Cl₂) is a gas, bromine (Br₂) is a liquid and iodine (I₂) is a solid. What best explains this trend?

  1. ALarger molecules with more electrons have stronger dispersion forces
  2. BIodine forms hydrogen bonds but chlorine does not
  3. CThe covalent bond in I₂ is much stronger than in Cl₂
  4. DChlorine is ionic, while iodine is metallic

Soluzioni

  1. 1. C · Liquid
  2. 2. D · A very hot gas in which atoms have lost electrons and become ions
  3. 3. A · A substance that changes colour depending on pH
  4. 4. C · Isotonic
  5. 5. D · 4
  6. 6. A · 2
  7. 7. C · 1/8
  8. 8. A · Larger molecules with more electrons have stronger dispersion forces

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