Робочий аркуш «Хімія для вступних іспитів на медсестринство» з відповідями

What is absolute zero?

1. A0 °F, the temperature of a salt and ice mixture
2. B0 °C, the point at which pure water freezes into ice
3. C−100 °C, the coldest temperature on Earth
4. D0 K, about −273 °C, the lowest possible temperature

Plants absorb energy from sunlight during photosynthesis. How is photosynthesis classified?

1. AExothermic
2. BNeutralisation
3. CEndothermic
4. DNuclear

What is activation energy?

1. AThe total energy released once the reaction has finished
2. BThe energy stored in the products
3. CThe energy needed to melt a solid
4. DThe minimum energy reacting particles need for a reaction to happen

What is 380 mmHg in atmospheres?

1. A0,5 atm
2. B2 atm
3. C0,38 atm
4. D380 atm

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

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

What is the normal boiling point of a liquid?

1. AThe temperature at which its density is greatest
2. BThe temperature at which it first starts to evaporate
3. CThe temperature at which its vapour pressure equals 1 atmosphere
4. DThe temperature at which its particles stop moving

Hydrogen peroxide fizzes when poured on a cut because an enzyme in blood breaks it down. What gas is produced, and what type of reaction is it?

1. AOxygen, in a decomposition reaction
2. BHydrogen, in a single replacement reaction
3. CCarbon dioxide, in a combustion reaction
4. DChlorine, in a synthesis reaction

An unknown element is shiny, conducts electricity, and reacts vigorously with water to form a basic solution and hydrogen gas. In which group is it most likely?

1. AGroup 14 (carbon group)
2. BGroup 18 (noble gases)
3. CGroup 17 (halogens)
4. DGroup 1 (alkali metals)