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

Какой тип реакции показан в реакции AB → A + B?

1. AСоединение
2. BРазложение
3. CНейтрализация
4. DОбмен

К какому виду материи относится солёная вода?

1. AК чистому элементу
2. BК однородной смеси (раствору)
3. CК соединению
4. DК неоднородной смеси

What is the change from a gas directly to a solid, skipping the liquid state, called?

1. ASublimation
2. BCondensation
3. CDeposition
4. DFreezing

What is carbon-14 dating used for?

1. AEstimating the age of material that was once alive
2. BMeasuring body temperature
3. CDetecting carbon monoxide in a room
4. DFinding the exact age of rocks that are billions of years old

How does ionisation energy (the energy needed to remove an outer electron) generally change from left to right across a period?

1. AIt stays the same
2. BIt first falls, then rises sharply
3. CIt decreases
4. DIt increases

Why does water boil at a lower temperature at the top of a high mountain?

1. AThe air is colder, so the water loses heat and boils sooner
2. BThere is less oxygen dissolved in the water up there
3. CGravity is weaker, so the molecules escape more easily
4. DThe air pressure is lower, so less vapour pressure is needed to boil

Hydrogen is usually placed at the top of group 1. Which statement about hydrogen is correct?

1. AIt has one valence electron like group 1 metals, but it is a nonmetal gas
2. BIt has a full outer shell like the noble gases
3. CIt always forms H⁺ ions and never shares electrons
4. DIt is an alkali metal that is solid at room temperature

Which coefficients balance the equation for cellular respiration, __C₆H₁₂O₆ + __O₂ → __CO₂ + __H₂O?

1. A1, 3, 6, 6
2. B2, 6, 12, 6
3. C1, 6, 6, 6
4. D1, 6, 6, 12