정답이 있는 간호학 입학 시험 대비 화학 학습지

What is the SI unit of temperature?

1. ADegree Celsius
2. BDegree Fahrenheit
3. CKelvin
4. DJoule

What is an element?

1. AA substance of two or more elements chemically bonded together
2. BA substance made of only one kind of atom
3. CA particle with an electric charge
4. DA physical mixture of different substances

Which two substances must be present for iron to rust?

1. AOxygen and water
2. BNitrogen and water
3. CHydrogen and oxygen gas only
4. DCarbon dioxide and salt

Why can a very high fever disrupt the body's chemical reactions?

1. AHigh temperatures can change the shape of enzymes so they stop working
2. BHigh temperatures turn enzymes into fats
3. CHigh temperatures remove the water from blood
4. DHigh temperatures make every enzyme work faster without any limit

소금 15 g과 물 135 g으로 만든 용액에서 소금의 질량 백분율은 얼마인가요?

1. A15%
2. B10%
3. C90%
4. D11%

A reaction has ΔH = −890 kJ/mol. What does the negative sign tell you?

1. AThe reaction is exothermic
2. BThe reaction is at equilibrium
3. CThe reaction is endothermic
4. DThe reaction needs a catalyst

2H₂ + O₂ → 2H₂O에서 수소(몰 질량 2 g/mol) 4 g이 충분한 산소와 반응합니다. 생성되는 물(몰 질량 18 g/mol)의 질량은 얼마인가요?

1. A36 g
2. B72 g
3. C18 g
4. D4 g

풍선에 300 K에서 기체 2.0 L가 들어 있습니다. 압력이 일정할 때 450 K로 가열합니다. 새 부피는 얼마인가요?

1. A1.3 L
2. B4.5 L
3. C2.0 L
4. D3.0 L