Химия для вступительных экзаменов на сестринские программы: лист заданий с ответами

Apart from mercury, which element is a liquid at room temperature?

1. ASodium
2. BIodine
3. CBromine
4. DChlorine

Which functional group is found in all alcohols?

1. ACarboxyl group (–COOH)
2. BAmino group (–NH₂)
3. CHydroxyl group (–OH)
4. DCarbonyl group (C=O) only

What is a solution?

1. AA mixture that is the same throughout (homogeneous)
2. BA solid that has been melted
3. CA pure compound made of two elements
4. DA mixture in which particles settle out on standing

A reaction is at equilibrium. More of one reactant is added. According to Le Chatelier's principle, what happens?

1. AThe reaction stops completely
2. BNothing changes
3. CThe equilibrium shifts toward the reactants
4. DThe equilibrium shifts toward the products

Что такое водородные связи?

1. AПритяжение между водородом одной молекулы и атомом O, N или F другой
2. BКовалентные связи между двумя атомами водорода в H₂
3. CСвязи внутри ядра водорода
4. DИонные связи между ионами водорода и металлами

What is nuclear fission?

1. AThe burning of uranium in oxygen
2. BThe splitting of a heavy nucleus into smaller nuclei
3. CThe joining of two light nuclei to form a heavier nucleus
4. DThe loss of electrons from an atom

A sealed bag of crisps (potato chips) packed at sea level looks puffed up when it is carried to a high mountain. Why?

1. AThe bag becomes thinner and weaker at altitude
2. BThe gas inside the bag is heated strongly by the mountain sunlight
3. CMore gas is produced by the crisps at altitude
4. DThe outside air pressure is lower, so the gas inside expands

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. BChlorine, in a synthesis reaction
3. CCarbon dioxide, in a combustion reaction
4. DHydrogen, in a single replacement reaction