1.쉬움
A food Calorie (written with a capital C) equals which amount of energy?
- A1 joule
- B1 kilocalorie
- C1 kilojoule (1000 J)
- D1 calorie
2.쉬움
Carbon has an atomic mass of 12. What is the mass of 1 mole of carbon atoms?
- A1 g
- B12 g
- C24 g
- D6 g
3.쉬움
What is an electrolyte?
- AA substance that forms ions and conducts electricity when dissolved in water
- BA gas that dissolves in blood
- CA substance that dissolves as whole molecules without forming any ions
- DA metal that conducts electricity as a solid
4.보통
What does Avogadro's law state?
- AEqual volumes of gases at the same temperature and pressure contain equal numbers of molecules
- BThe pressure of a gas doubles when its temperature is halved
- CEqual masses of all gases contain equal numbers of molecules under any conditions
- DOne mole of any gas has a mass of 22.4 g
5.보통
비활성 기체가 좀처럼 반응하지 않는 이유는 무엇인가요?
- A모두 방사성이기 때문이다
- B원자가 다른 원자보다 훨씬 크기 때문이다
- C전자가 전혀 없기 때문이다
- D바깥 전자 껍질이 이미 가득 차 있기 때문이다
6.보통
전기 음성도가 가장 큰 원소는 무엇인가요?
- A헬륨
- B플루오린
- C철
- D나트륨
7.어려움
Why does drinking seawater make dehydration worse?
- ASeawater is hypertonic, so the body loses extra water getting rid of the salt
- BSeawater is isotonic, so it cannot be absorbed
- CSeawater is hypotonic, so water rushes into cells and makes them burst
- DSeawater contains no water molecules the body can use
8.어려움
양성자 8개와 중성자 10개를 가진 원자를 나타내는 동위 원소 표기는 어느 것인가요?
- A산소-10
- B아르곤-18
- C네온-18
- D산소-18
정답표
- 1. B · 1 kilocalorie
- 2. B · 12 g
- 3. A · A substance that forms ions and conducts electricity when dissolved in water
- 4. A · Equal volumes of gases at the same temperature and pressure contain equal numbers of molecules
- 5. D · 바깥 전자 껍질이 이미 가득 차 있기 때문이다
- 6. B · 플루오린
- 7. A · Seawater is hypertonic, so the body loses extra water getting rid of the salt
- 8. D · 산소-18
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