정답이 있는 간호학 입학 시험 대비 화학 학습지

Which process is exothermic (releases heat)?

1. ABurning methane gas
2. BPhotosynthesis
3. CMelting a block of ice
4. DEvaporating water

According to the Arrhenius definition, what does a base produce in water?

1. AChloride ions (Cl⁻)
2. BCarbonate ions (CO₃²⁻)
3. CHydrogen ions (H⁺)
4. DHydroxide ions (OH⁻)

Where do the mole ratios used in stoichiometry come from?

1. AThe coefficients of the balanced equation
2. BThe subscripts in each formula
3. CThe molar masses of the reactants
4. DThe physical states of the substances

염소-37 원자는 양성자가 17개입니다. 중성자는 몇 개인가요?

1. A54개
2. B20개
3. C17개
4. D37개

Drops of water form on the outside of a glass of ice water. Where does this water come from?

1. AThe ice evaporates through the glass
2. BWater vapour in the air condenses on the cold glass
3. CWater leaks through tiny holes in the glass
4. DThe glass releases water when it gets cold

수소 결합이란 무엇인가요?

1. A수소 이온과 금속 사이의 이온 결합
2. B한 분자의 수소와 다른 분자의 O, N 또는 F 원자 사이의 인력
3. CH₂에서 두 수소 원자 사이의 공유 결합
4. D수소의 원자핵 안에 있는 결합

A small amount of acid is spilled on a lab bench. Why is a weak base such as sodium bicarbonate preferred over strong NaOH to neutralise it?

1. ANaOH does not react with acids at room temperature
2. BSodium bicarbonate makes the spilled acid evaporate
3. CExcess sodium bicarbonate is far less harmful than excess NaOH
4. DSodium bicarbonate is a strong acid that cancels the spill

J.J. Thomson's cathode ray experiments led to which discovery?

1. AElectrons occupy fixed energy levels
2. BAtoms have a dense, positively charged nucleus
3. CAtoms contain small, negatively charged particles
4. DThe nucleus contains uncharged neutrons