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

A cleaning solution has a pH of 12. How is it described?

1. AStrongly basic
2. BWeakly acidic
3. CNeutral
4. DStrongly acidic

Quale particella di un atomo ha carica positiva?

1. AIl protone
2. BL'elettrone
3. CIl fotone
4. DIl neutrone

In a chemical equation, what are the reactants?

1. AThe catalysts written above the arrow
2. BThe new substances formed, written to the right of the arrow
3. CThe starting substances, written to the left of the arrow
4. DThe numbers written in front of each formula

An exothermic reaction is at equilibrium. What happens if the temperature is raised?

1. AThe reaction becomes endothermic
2. BThe equilibrium shifts toward the reactants
3. CThe equilibrium does not change
4. DThe equilibrium shifts toward the products, raising the yield

How many grams are in 2,5 kg?

1. A0,0025 g
2. B2500 g
3. C250 g
4. D25 g

Which equation shows a combustion reaction?

1. ACaCO₃ → CaO + CO₂
2. BC₂H₅OH + 3O₂ → 2CO₂ + 3H₂O
3. CNaOH + HCl → NaCl + H₂O
4. DZn + CuSO₄ → ZnSO₄ + Cu

Hydrogen is usually placed at the top of group 1. Which statement about hydrogen is correct?

1. AIt is an alkali metal that is solid at room temperature
2. BIt has a full outer shell like the noble gases
3. CIt has one valence electron like group 1 metals, but it is a nonmetal gas
4. DIt always forms H⁺ ions and never shares electrons

Quale affermazione su un catalizzatore in una reazione reversibile è corretta?

1. ASi consuma man mano che la reazione procede
2. BAumenta la quantità di prodotto all'equilibrio
3. CAccelera solo la reazione diretta e ferma quella inversa
4. DAccelera entrambe le direzioni allo stesso modo