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

Which state of matter has a fixed volume but takes the shape of its container?

1. ALiquid
2. BGas
3. CSolid
4. DPlasma

What is oxidation, in terms of electrons?

1. ALoss of electrons
2. BGain of neutrons
3. CGain of electrons
4. DLoss of protons

What is a dilute solution?

1. AOne with a small amount of solute in a lot of solvent
2. BOne with a large amount of solute in a little solvent
3. COne with no solvent at all
4. DOne in which the solute has reacted with the solvent

What colour is phenolphthalein indicator in a basic solution?

1. AColourless
2. BBlue
3. CPink
4. DYellow

The amino acid glycine has an –NH₂ group and a –COOH group. What are these two groups called?

1. AA carbonyl group and an ester group
2. BAn amino group and a carboxyl group
3. CA hydroxyl group and a methyl group
4. DA phosphate group and a hydroxyl group

To which family of organic compounds does ethanol, C₂H₅OH, belong?

1. AAlkanes
2. BCarboxylic acids
3. CAlcohols
4. DEsters

Na⁺, Mg²⁺, F⁻ and O²⁻ all have 10 electrons. Which ion is the largest?

1. AO²⁻
2. BNa⁺
3. CMg²⁺
4. DF⁻

In the reaction NH₃ + H₂O ⇌ NH₄⁺ + OH⁻, which substance acts as the Brønsted–Lowry acid?

1. ANH₄⁺ only
2. BOH⁻
3. CH₂O
4. DNH₃