1.쉬움
다음 중 화학 변화인 것은 어느 것인가요?
- A나무가 타는 것
- B얼음이 녹는 것
- C유리가 깨지는 것
- D설탕이 차에 녹는 것
2.쉬움
What do the letters STP stand for in gas chemistry?
- AStandard temperature and pressure
- BStandard time and pressure
- CSpecific temperature and particles
- DStable temperature point
3.쉬움
For a given substance, in which state do its particles move fastest?
- ALiquid
- BGas
- CSolid
- DThey move at the same speed in all states
4.보통
Which nuclear process powers the Sun?
- AFusion of hydrogen nuclei to form helium
- BFission of uranium into smaller nuclei
- CCombustion of hydrogen gas with oxygen in its core
- DAlpha decay of helium
5.보통
How much heat is needed to raise the temperature of 100 g of water by 10 °C (specific heat of water = 4.18 J/g·°C)?
- A418 J
- B41.8 J
- C4180 J
- D41,800 J
6.보통
How should the volume of water in a graduated cylinder be read?
- AFrom above the cylinder, at the top edge of the curved surface
- BFrom below, at the highest point the water touches the glass
- CAt any angle, from the middle of the cylinder
- DAt eye level, from the bottom of the curved surface (meniscus)
7.어려움
A solution has a hydroxide ion concentration of 1 × 10⁻³ mol/L. What is its pH at 25 °C?
- A3
- B14
- C7
- D11
8.어려움
풍선에 300 K에서 기체 2.0 L가 들어 있습니다. 압력이 일정할 때 450 K로 가열합니다. 새 부피는 얼마인가요?
- A4.5 L
- B1.3 L
- C3.0 L
- D2.0 L
정답표
- 1. A · 나무가 타는 것
- 2. A · Standard temperature and pressure
- 3. B · Gas
- 4. A · Fusion of hydrogen nuclei to form helium
- 5. C · 4180 J
- 6. D · At eye level, from the bottom of the curved surface (meniscus)
- 7. D · 11
- 8. C · 3.0 L
자세한 단계별 풀이: examproblems.com에서 이 주제를 연습하세요.