1.쉬움
What is gamma radiation?
- AA fast stream of protons from the nucleus
- BHigh-energy electromagnetic radiation with no mass or charge
- CA stream of helium nuclei with a positive charge
- DA slow-moving electron
2.쉬움
이온이란 무엇인가요?
- A전자가 하나도 없는 입자
- B같은 원자 두 개로 이루어진 분자
- C전하를 띤 원자 또는 원자 집단
- D다른 원자보다 원자핵에 중성자가 더 많은 원자
3.쉬움
A cleaning solution has a pH of 12. How is it described?
- AStrongly basic
- BNeutral
- CWeakly acidic
- DStrongly acidic
4.보통
What feature makes a hydrocarbon an alkene?
- AA ring of six carbon atoms with no hydrogen
- BAt least one carbon–carbon double bond
- CAn –OH group
- DOnly carbon–carbon single bonds
5.보통
What is the name of the molecular compound CO?
- ACarbon monoxide
- BCarbon dioxide
- CCarbon oxide
- DMonocarbon oxide
6.보통
An exothermic reaction is at equilibrium. What happens if the temperature is raised?
- AThe reaction becomes endothermic
- BThe equilibrium shifts toward the reactants
- CThe equilibrium shifts toward the products, raising the yield
- DThe equilibrium does not change
7.어려움
Na⁺, Mg²⁺, F⁻ and O²⁻ all have 10 electrons. Which ion is the largest?
- AF⁻
- BMg²⁺
- CO²⁻
- DNa⁺
8.어려움
Alkanes follow the general formula CₙH₂ₙ₊₂. What is the formula of the alkane with 4 carbon atoms?
- AC₄H₁₂
- BC₄H₈
- CC₄H₁₀
- DC₄H₆
정답표
- 1. B · High-energy electromagnetic radiation with no mass or charge
- 2. C · 전하를 띤 원자 또는 원자 집단
- 3. A · Strongly basic
- 4. B · At least one carbon–carbon double bond
- 5. A · Carbon monoxide
- 6. B · The equilibrium shifts toward the reactants
- 7. C · O²⁻
- 8. C · C₄H₁₀
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