정답이 있는 간호학 입학 시험 대비 화학 학습지

Standard atmospheric pressure (1 atm) is equal to how many millimetres of mercury?

1. A760 mmHg
2. B100 mmHg
3. C120 mmHg
4. D1000 mmHg

Which electrons take part in chemical bonding?

1. AThe electrons closest to the nucleus
2. BThe valence (outermost) electrons
3. COnly the electrons in the first shell
4. DAll electrons take part equally

Which technique is used to separate the different coloured dyes in an ink?

1. AMagnetism
2. BDistillation of the ink
3. CFiltration
4. DChromatography

A reaction has a theoretical yield of 20 g, but only 15 g of product is collected. What is the percent yield?

1. A5%
2. B25%
3. C133%
4. D75%

What is a polymer?

1. AA mixture of several different elements
2. BA large molecule built from many repeating smaller units called monomers
3. CAn ion with more than one charge
4. DA small molecule containing only two atoms of one element

같은 족에 속한 원소들에 대한 설명으로 옳은 것은 어느 것인가요?

1. A전자 껍질 수는 같지만 성질은 다르다
2. B원자가 전자 수가 같고 화학적 성질이 비슷하다
3. C원자 질량이 같고 양성자 수도 같다
4. D실온에서 항상 모두 기체이다

Hyperbaric oxygen therapy places a patient in a chamber with oxygen at higher than normal pressure. Why does this raise the oxygen dissolved in blood plasma?

1. AGas solubility in a liquid increases with the partial pressure of the gas
2. BHigher pressure turns the oxygen into a liquid
3. CHigher pressure makes red blood cells divide faster
4. DHigher pressure lowers body temperature, so the blood can hold much more gas

A scuba diver breathes compressed air deep underwater. Why must the diver breathe out while swimming up to the surface?

1. AThe air in the lungs shrinks as the outside pressure falls
2. BThe water gets warmer near the surface
3. CThe air in the lungs expands as the outside pressure falls
4. DOxygen turns to liquid at the surface