1.쉬움
What does organic chemistry study?
- ACompounds made of metals
- BCompounds based on carbon
- COnly compounds found in plants
- DOnly the noble gases
2.쉬움
What is radioactivity?
- AThe release of heat and light when fuels burn in air
- BThe flow of electrons through a metal wire
- CThe glow produced by any hot object
- DThe release of radiation by unstable atomic nuclei
3.쉬움
What are the building blocks (monomers) of proteins?
- ASimple sugars
- BFatty acids
- CNucleotides
- DAmino acids
4.보통
What does Avogadro's law state?
- AEqual volumes of gases at the same temperature and pressure contain equal numbers of molecules
- BEqual masses of all gases contain equal numbers of molecules under any conditions
- CThe pressure of a gas doubles when its temperature is halved
- DOne mole of any gas has a mass of 22.4 g
5.보통
How many covalent bonds does a carbon atom usually form?
- A4
- B2
- C3
- D1
6.보통
온도가 높아지면 보통 물에 녹는 고체의 양은 어떻게 되나요?
- A고체가 기체로 변한다
- B더 많은 고체가 녹는다
- C더 적은 고체가 녹는다
- D고체에는 영향이 없다
7.어려움
A sealed rigid can holds gas at 2 atm and 27 °C. It is heated to 327 °C. What is the new pressure?
- A1 atm
- B2.4 atm
- C24 atm
- D4 atm
8.어려움
어떤 이온이 양성자 12개와 전자 10개를 가지고 있습니다. 이 이온은 무엇인가요?
- ANa⁺
- BNe
- CMg²⁻
- DMg²⁺
정답표
- 1. B · Compounds based on carbon
- 2. D · The release of radiation by unstable atomic nuclei
- 3. D · Amino acids
- 4. A · Equal volumes of gases at the same temperature and pressure contain equal numbers of molecules
- 5. A · 4
- 6. B · 더 많은 고체가 녹는다
- 7. D · 4 atm
- 8. D · Mg²⁺
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