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

What is the name for the attraction of water molecules to each other?

1. ACohesion
2. BAdhesion
3. COsmosis
4. DDiffusion

Which property is typical of bases?

1. AThey turn blue litmus red
2. BThey taste sour
3. CThey have a pH below 7
4. DThey feel slippery

What is the formula of sulfuric acid?

1. AHCl
2. BH₂SO₄
3. CHNO₃
4. DH₂SO₃

When a nucleus emits an alpha particle, how do its mass number and atomic number change?

1. AMass number falls by 4 and atomic number falls by 2
2. BMass number falls by 2 and atomic number falls by 4
3. CNeither changes
4. DMass number stays the same and atomic number rises by 1

What is the name of the molecular compound CO?

1. ACarbon monoxide
2. BMonocarbon oxide
3. CCarbon oxide
4. DCarbon dioxide

How does electronegativity change going down a group?

1. AIt doubles with each period
2. BIt increases
3. CIt stays the same
4. DIt decreases

Magnesium burns as 2Mg + O₂ → 2MgO. What mass of MgO (40 g/mol) forms from 48 g of Mg (24 g/mol)?

1. A160 g
2. B48 g
3. C40 g
4. D80 g

Сколько граммов аммиака (17 г/моль) по уравнению N₂ + 3H₂ → 2NH₃ можно получить из 1 моль N₂ при избытке водорода?

1. A51 г
2. B17 г
3. C28 г
4. D34 г