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

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

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

What does organic chemistry study?

1. AOnly compounds found in plants
2. BCompounds based on carbon
3. CCompounds made of metals
4. DOnly the noble gases

Which quantity is the same for 1 mole of any substance?

1. AThe volume as a liquid
2. BThe number of atoms per molecule
3. CThe mass in grams
4. DThe number of particles

Water climbs up a narrow glass tube. Which property mainly causes this?

1. ALow density of water
2. BAdhesion of water to the glass
3. CWater's high boiling point
4. DEvaporation of water from the tube

0,5 mol of KCl is dissolved to make 250 mL of solution. What is its molarity?

1. A0,125 M
2. B125 M
3. C2 M
4. D0,5 M

What is the name of the molecular compound CO?

1. AMonocarbon oxide
2. BCarbon monoxide
3. CCarbon dioxide
4. DCarbon oxide

Газ находится под давлением 1 атм в сосуде объёмом 6 л. При той же температуре его сжимают до 2 л. Каково новое давление?

1. A4 атм
2. B12 атм
3. C0,33 атм
4. D3 атм

Olive oil is liquid at room temperature, while butter is solid. Which explanation is correct?

1. AOlive oil has no C=C double bonds, so its chains stay straight and pack tightly
2. BButter contains more water, which freezes at room temperature
3. COlive oil has more C=C double bonds, which kink the chains so they cannot pack closely
4. DOlive oil molecules are ionic, while butter molecules are covalent