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

К какому виду материи относится солёная вода?

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

Нейтральный атом имеет 11 протонов. Сколько у него электронов?

1. A11
2. B22
3. C12
4. D10

What should a student always wear to protect the eyes when working with chemicals?

1. ASunglasses
2. BContact lenses
3. CSafety goggles
4. DReading glasses

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

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

In the balanced equation __Mg + __HCl → __MgCl₂ + __H₂, what is the coefficient of HCl?

1. A1
2. B3
3. C4
4. D2

У атома хлора-37 17 протонов. Сколько у него нейтронов?

1. A17
2. B37
3. C54
4. D20

A patient's temperature is 104 °F. What is it in degrees Celsius?

1. A43 °C
2. B58 °C
3. C72 °C
4. D40 °C

How does soap help remove grease from skin?

1. AEach soap molecule has a polar end that attracts water and a nonpolar end that attracts grease
2. BSoap molecules are completely nonpolar, so they dissolve grease like a solvent
3. CSoap makes the grease more dense so it sinks
4. DSoap reacts with grease to form water and carbon dioxide