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

Come si chiama il passaggio direttamente da solido a gas?

1. AFusione
2. BCondensazione
3. CSublimazione
4. DBrinamento (deposizione)

Which property is typical of bases?

1. AThey have a pH below 7
2. BThey turn blue litmus red
3. CThey feel slippery
4. DThey taste sour

According to collision theory, what must happen for particles to react?

1. AThey must both be in the solid state at the same time
2. BThey must stay completely still next to each other
3. CThey must collide with enough energy and the right orientation
4. DThey must have the same mass

Che tipo di reazione è AgNO₃ + NaCl → AgCl + NaNO₃?

1. ADoppio scambio
2. BScambio semplice
3. CCombustione
4. DDecomposizione

Why does oxygen move from the alveoli of the lungs into the blood?

1. AThe partial pressure of oxygen is higher in the alveoli than in the blood
2. BThe partial pressure of oxygen is higher in the blood than in the alveoli
3. COxygen is heavier than carbon dioxide
4. DOxygen is pumped actively into the blood

What is the oxidation number of an element in its uncombined (elemental) form, such as Fe or O₂?

1. A−1
2. B+1
3. CIt equals the group number
4. D0

Why does a burn from steam at 100 °C usually cause more damage than one from liquid water at 100 °C?

1. ASteam carries dissolved acid that damages the skin
2. BLiquid water cannot pass any of its heat to the skin
3. CSteam particles are hotter than water particles at the same reading
4. DSteam releases a large amount of extra energy as it condenses on the skin

Hyperbaric oxygen therapy places a patient in a chamber with oxygen at higher than normal pressure. Why does this raise the oxygen dissolved in blood plasma?

1. AHigher pressure turns the oxygen into a liquid
2. BHigher pressure makes red blood cells divide faster
3. CHigher pressure lowers body temperature, so the blood can hold much more gas
4. DGas solubility in a liquid increases with the partial pressure of the gas