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 solution?

  1. AA mixture that is the same throughout (homogeneous)
  2. BA mixture in which particles settle out on standing
  3. CA pure compound made of two elements
  4. DA solid that has been melted
2.Facile

What is the change from a gas to a liquid called?

  1. ACondensation
  2. BEvaporation
  3. CFreezing
  4. DSublimation
3.Facile

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

  1. A0,5
  2. B2
  3. C3
  4. D1
4.Media

Quale sostanza si ossida nella reazione 2Mg + O₂ → 2MgO?

  1. ANessuna delle due sostanze cambia carica
  2. BL'ossigeno, perché perde elettroni
  3. CIl magnesio, perché acquista elettroni
  4. DIl magnesio, perché perde elettroni
5.Media

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

  1. A4
  2. B1
  3. C0
  4. D2
6.Media

What is carbon-14 dating used for?

  1. ADetecting carbon monoxide in a room
  2. BEstimating the age of material that was once alive
  3. CFinding the exact age of rocks that are billions of years old
  4. DMeasuring body temperature
7.Difficile

What is the oxidation number of manganese in potassium permanganate, KMnO₄?

  1. A+7
  2. B−1
  3. C+1
  4. D+4
8.Difficile

Raising the temperature by 10 °C can roughly double the rate of many reactions. What is the main reason?

  1. AThe particles become larger and easier to hit
  2. BMany more collisions have at least the activation energy
  3. CThe activation energy itself is lowered by the extra heat
  4. DThe reaction becomes more exothermic

Soluzioni

  1. 1. A · A mixture that is the same throughout (homogeneous)
  2. 2. A · Condensation
  3. 3. B · 2
  4. 4. D · Il magnesio, perché perde elettroni
  5. 5. D · 2
  6. 6. B · Estimating the age of material that was once alive
  7. 7. A · +7
  8. 8. B · Many more collisions have at least the activation energy

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