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

What is the name for the attraction of water molecules to each other?

1. ADiffusion
2. BAdhesion
3. COsmosis
4. DCohesion

What are the building blocks of carbohydrates such as starch?

1. AFatty acids joined to a glycerol molecule
2. BMonosaccharides (simple sugars) such as glucose
3. CNucleotides
4. DAmino acids

How does increasing the concentration of a reactant in solution usually affect the reaction rate?

1. AThe rate stays the same
2. BThe reaction stops
3. CThe rate increases
4. DThe rate decreases

Drops of water form on the outside of a glass of ice water. Where does this water come from?

1. AWater leaks through tiny holes in the glass
2. BThe glass releases water when it gets cold
3. CWater vapour in the air condenses on the cold glass
4. DThe ice evaporates through the glass

What charge do group 16 elements such as oxygen and sulfur usually have as ions?

1. A2+
2. B2−
3. C6+
4. D1−

Quale elemento è il più elettronegativo?

1. AL'elio
2. BIl sodio
3. CIl fluoro
4. DIl ferro

In the fission reaction ²³⁵U + ¹n → ¹⁴¹Ba + ⁹²Kr + ? ¹n, how many neutrons are released?

1. A3
2. B2
3. C1
4. D4

Qual è la massa molare del glucosio, C₆H₁₂O₆ (C = 12, H = 1, O = 16 g/mol)?

1. A96 g/mol
2. B29 g/mol
3. C168 g/mol
4. D180 g/mol