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

Where are the transition metals located on the periodic table?

1. AIn group 1 on the far left
2. BIn the central block, groups 3 to 12
3. CAbove the noble gases
4. DIn group 18 on the far right

В какой группе находятся благородные газы, например гелий и неон?

1. AВ группе 18
2. BВ группе 1
3. CВ группе 17
4. DВ группе 2

При какой температуре кипит чистая вода на уровне моря?

1. A0 °C (32 °F)
2. B37 °C (98,6 °F)
3. C100 °C (212 °F)
4. D50 °C (122 °F)

What is the conjugate base of nitric acid, HNO₃?

1. AH₂NO₃⁺
2. BNO₂⁻
3. CHNO₂
4. DNO₃⁻

How much heat is needed to raise the temperature of 100 g of water by 10 °C (specific heat of water = 4,18 J/g·°C)?

1. A41,800 J
2. B4180 J
3. C418 J
4. D41,8 J

A plastic block has a density of 0,8 g/cm³. What happens when it is placed in water (density 1,0 g/cm³)?

1. AIt sinks
2. BIt floats
3. CIt stays suspended halfway down
4. DIt dissolves

When water boils, what is overcome?

1. AThe forces holding the oxygen nucleus together
2. BHydrogen bonds between water molecules
3. CThe ionic bonds between H⁺ and O²⁻
4. DThe covalent O–H bonds inside each molecule

A gas occupies 4 L at 2 atm and 200 K. What is its volume at 1 atm and 400 K?

1. A8 L
2. B1 L
3. C16 L
4. D4 L