정답이 있는 간호학 입학 시험 대비 화학 학습지

What causes the pressure of a gas in a container?

1. AGas particles sticking to the walls
2. BGas particles stopping and pushing outward
3. CThe weight of the container pressing on the gas inside
4. DGas particles colliding with the container walls

What is the change from a liquid to a solid called?

1. AEvaporation
2. BCondensation
3. CFreezing
4. DMelting

DNA belongs to which group of biological molecules?

1. ALipids
2. BCarbohydrates
3. CNucleic acids
4. DProteins

NaCl 같은 이온 화합물의 전형적인 성질은 무엇인가요?

1. A녹는점이 낮고 실온에서 기체이다
2. B금속처럼 무르고 쉽게 구부러진다
3. C마른 고체 상태로 전기를 통한다
4. D녹는점이 높고, 물에 녹으면 전기를 통한다

In a reaction at equilibrium, a product is continuously removed. What happens?

1. AThe reaction rate drops to zero
2. BThe equilibrium shifts to the left to form more reactants
3. CThe reactants run out immediately
4. DMore product keeps forming as the equilibrium shifts to the right

단단하게 밀봉된 용기에서 기체를 가열하면 압력은 어떻게 되나요?

1. A0으로 떨어진다
2. B그대로이다
3. C감소한다
4. D증가한다

A student tests whether water temperature affects how fast sugar dissolves. Which set of factors should be kept the same in every trial?

1. AOnly the colour of the cup
2. BThe water temperature and the dissolving time
3. CNothing, because changing several factors at once gives more useful data
4. DThe mass of sugar, the type of sugar, the volume of water and the amount of stirring

Ethanol (CH₃CH₂OH) and dimethyl ether (CH₃OCH₃) have the same formula, C₂H₆O, but ethanol boils at a much higher temperature. Why?

1. AEthanol has more carbon atoms
2. BEthanol has an O–H group, so its molecules form hydrogen bonds with each other
3. CDimethyl ether is ionic and ethanol is covalent
4. DEthanol molecules are heavier than dimethyl ether molecules