1.쉬움
How many millilitres are in 1 litre?
- A10,000
- B1000
- C100
- D10
2.쉬움
What is the change from a liquid to a solid called?
- AFreezing
- BEvaporation
- CCondensation
- DMelting
3.쉬움
Which functional group is found in all alcohols?
- ACarboxyl group (–COOH)
- BHydroxyl group (–OH)
- CAmino group (–NH₂)
- DCarbonyl group (C=O) only
4.보통
To which family of organic compounds does ethanol, C₂H₅OH, belong?
- AAlcohols
- BEsters
- CAlkanes
- DCarboxylic acids
5.보통
An exothermic reaction is at equilibrium. What happens if the temperature is raised?
- AThe reaction becomes endothermic
- BThe equilibrium does not change
- CThe equilibrium shifts toward the products, raising the yield
- DThe equilibrium shifts toward the reactants
6.보통
A piece of metal has a density of 8 g/cm³ and a volume of 5 cm³. What is its mass?
- A1.6 g
- B40 g
- C0.625 g
- D13 g
7.어려움
다음 중 중화 반응은 어느 것인가요?
- AH₂SO₄ + 2KOH → K₂SO₄ + 2H₂O
- BZn + CuSO₄ → ZnSO₄ + Cu
- C2H₂O → 2H₂ + O₂
- DCH₄ + 2O₂ → CO₂ + 2H₂O
8.어려움
어떤 물질은 801 °C에서 녹고, 고체일 때는 전기를 통하지 않지만 녹으면 전기를 통합니다. 가장 가능성이 큰 물질의 종류는 무엇인가요?
- A단순 공유 결합(분자) 물질
- B금속
- C이온 화합물
- D비활성 기체
정답표
- 1. B · 1000
- 2. A · Freezing
- 3. B · Hydroxyl group (–OH)
- 4. A · Alcohols
- 5. D · The equilibrium shifts toward the reactants
- 6. B · 40 g
- 7. A · H₂SO₄ + 2KOH → K₂SO₄ + 2H₂O
- 8. C · 이온 화합물
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