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

What is the SI unit of pressure?

  1. ALitre (L)
  2. BPascal (Pa)
  3. CNewton (N)
  4. DJoule (J)
2.Facile

Quale di questi è un composto?

  1. AElio (He)
  2. BOssigeno gassoso (O₂)
  3. CFerro (Fe)
  4. DAnidride carbonica (CO₂)
3.Facile

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

  1. A0,5
  2. B1
  3. C3
  4. D2
4.Media

What is 380 mmHg in atmospheres?

  1. A0,5 atm
  2. B2 atm
  3. C380 atm
  4. D0,38 atm
5.Media

Which element has the most metallic character?

  1. AAluminium (Al)
  2. BCaesium (Cs)
  3. CChlorine (Cl)
  4. DSodium (Na)
6.Media

What are London dispersion forces?

  1. AStrong bonds formed by transferring electrons
  2. BWeak, temporary attractions caused by shifting electrons in molecules
  3. CAttractions between a hydrogen atom and a metal ion
  4. DForces that hold protons together in the nucleus
7.Difficile

A scuba diver breathes compressed air deep underwater. Why must the diver breathe out while swimming up to the surface?

  1. AThe water gets warmer near the surface
  2. BThe air in the lungs expands as the outside pressure falls
  3. COxygen turns to liquid at the surface
  4. DThe air in the lungs shrinks as the outside pressure falls
8.Difficile

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

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

Soluzioni

  1. 1. B · Pascal (Pa)
  2. 2. D · Anidride carbonica (CO₂)
  3. 3. D · 2
  4. 4. A · 0,5 atm
  5. 5. B · Caesium (Cs)
  6. 6. B · Weak, temporary attractions caused by shifting electrons in molecules
  7. 7. B · The air in the lungs expands as the outside pressure falls
  8. 8. D · Striking supplies the activation energy to start the reaction

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