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 a cation?

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

What is the SI unit of pressure?

  1. APascal (Pa)
  2. BLitre (L)
  3. CJoule (J)
  4. DNewton (N)
3.Facile

What do the letters STP stand for in gas chemistry?

  1. AStandard temperature and pressure
  2. BSpecific temperature and particles
  3. CStandard time and pressure
  4. DStable temperature point
4.Media

What is the mass of 0,5 mol of NaCl (molar mass 58,5 g/mol)?

  1. A29,25 g
  2. B58,5 g
  3. C117 g
  4. D0,5 g
5.Media

How can you get solid salt back from salt water?

  1. AEvaporate the water
  2. BFreeze the solution and lift out the salt
  3. CUse a magnet
  4. DFilter the solution
6.Media

Qual è la formula dell'ossido di alluminio, formato da ioni Al³⁺ e O²⁻?

  1. AAl₂O₃
  2. BAl₃O₂
  3. CAlO₃
  4. DAlO
7.Difficile

A nurse wipes a patient's arm with an alcohol swab and the patient says the skin feels cold. What explains this?

  1. AThe alcohol blocks the skin's nerve endings for warmth
  2. BThe alcohol reacts with the skin in an endothermic chemical reaction
  3. CThe alcohol is stored at a much lower temperature than the room
  4. DThe alcohol absorbs heat from the skin as it evaporates
8.Difficile

Why does drinking seawater make dehydration worse?

  1. ASeawater is hypotonic, so water rushes into cells and makes them burst
  2. BSeawater is hypertonic, so the body loses extra water getting rid of the salt
  3. CSeawater is isotonic, so it cannot be absorbed
  4. DSeawater contains no water molecules the body can use

Soluzioni

  1. 1. C · A positively charged ion
  2. 2. A · Pascal (Pa)
  3. 3. A · Standard temperature and pressure
  4. 4. A · 29,25 g
  5. 5. A · Evaporate the water
  6. 6. A · Al₂O₃
  7. 7. D · The alcohol absorbs heat from the skin as it evaporates
  8. 8. B · Seawater is hypertonic, so the body loses extra water getting rid of the salt

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