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

What is plasma, as a state of matter?

1. AA liquid that has been cooled below its freezing point
2. BA solid that conducts electricity
3. CThe liquid part of blood
4. DA very hot gas in which atoms have lost electrons and become ions

Boyle's law describes the relationship between which two properties of a gas, at constant temperature?

1. APressure and volume
2. BPressure and temperature
3. CMass and volume
4. DVolume and temperature

Quali particelle subatomiche si trovano nel nucleo?

1. AElettroni e neutroni
2. BProtoni ed elettroni
3. CSolo elettroni
4. DProtoni e neutroni

Which bond joins amino acids together in a protein?

1. AA hydrogen bond
2. BA glycosidic bond
3. CA peptide bond
4. DAn ionic bond

Which halogen is the most reactive?

1. AFluorine
2. BBromine
3. CChlorine
4. DIodine

Why do group 1 metals such as sodium react so easily?

1. AThey easily gain one extra electron
2. BThey have a full outer shell of electrons
3. CThey have one outer electron that is easily lost
4. DTheir nuclei contain no neutrons

Quale elenco dispone gli elementi in ordine di raggio atomico crescente?

1. AO, F, N, C
2. BNa, Mg, Al, Si
3. CC, N, O, F
4. DF, O, N, C

Which list puts 0,1 M solutions of HCl, acetic acid (CH₃COOH) and NaCl in order of increasing pH?

1. AHCl < CH₃COOH < NaCl
2. BHCl < NaCl < CH₃COOH
3. CCH₃COOH < HCl < NaCl
4. DNaCl < CH₃COOH < HCl