정답이 있는 간호학 입학 시험 대비 화학 학습지

What is the maximum number of electrons the first electron shell can hold?

1. A2
2. B8
3. C1
4. D18

Which element makes up the largest share of the human body by mass?

1. ANitrogen
2. BOxygen
3. CCarbon
4. DHydrogen

What is the SI unit of energy?

1. AKelvin
2. BNewton
3. CJoule
4. DWatt

물 분자가 극성인 이유는 무엇인가요?

1. A산소가 공유 전자를 더 강하게 끌어당기고 분자가 굽은 모양이기 때문이다
2. B물 분자는 두 수소가 일직선상에 놓인 직선형이기 때문이다
3. C수소가 산소보다 전기 음성도가 크기 때문이다
4. D물에서는 수소와 산소 사이가 이온 결합이기 때문이다

A plastic block has a density of 0.8 g/cm³. What happens when it is placed in water (density 1.0 g/cm³)?

1. AIt sinks
2. BIt floats
3. CIt dissolves
4. DIt stays suspended halfway down

Why must temperatures be in kelvin in gas law calculations?

1. AGas volume and pressure are proportional to the absolute temperature
2. BKelvin values are always below 100
3. CCelsius can only be used for liquids
4. DThe kelvin scale has smaller degrees, which gives more precise answers

5.85 g of NaCl (molar mass 58.5 g/mol) is dissolved to make 500 mL of solution. What is the molarity?

1. A2 M
2. B0.2 M
3. C0.1 M
4. D0.05 M

Why does atomic radius decrease from left to right across a period?

1. AMore protons pull the electrons of the same outer shell closer
2. BEach element adds a new electron shell
3. CNeutrons push the electrons outward less strongly
4. DThe atoms lose electrons across the period