정답이 있는 간호학 입학 시험 대비 화학 학습지

What is gamma radiation?

1. AA stream of helium nuclei with a positive charge
2. BA slow-moving electron
3. CHigh-energy electromagnetic radiation with no mass or charge
4. DA fast stream of protons from the nucleus

What is an empirical formula?

1. AThe simplest whole-number ratio of atoms in a compound
2. BThe mass of one mole of a compound
3. CA drawing of how the atoms are bonded
4. DThe actual number of each atom in one molecule

물의 화학식은 무엇인가요?

1. AH₂O₂
2. BHO₂
3. COH
4. DH₂O

강산을 설명하는 것은 어느 것인가요?

1. ApH가 7보다 높다
2. B수소 이온을 일부만 내놓는다
3. C물에서 완전히 이온화한다
4. D항상 농도가 매우 높다

2 M 용액 100 mL를 전체 부피 400 mL가 되도록 묽혔습니다. 새 농도는 얼마인가요?

1. A0.5 M
2. B2 M
3. C1 M
4. D8 M

Using significant figures, what is 2.5 cm × 3.42 cm?

1. A8.55 cm²
2. B8.550 cm²
3. C9 cm²
4. D8.6 cm²

Burning a match is strongly exothermic, so why does it not catch fire until it is struck?

1. AStriking pushes extra oxygen into the chemicals of the match head
2. BThe match must first absorb all its energy from the air
3. CStriking makes the reaction endothermic
4. DStriking supplies the activation energy to start the reaction

What is (8 × 10⁶) ÷ (2 × 10⁻²)?

1. A4 × 10⁴
2. B16 × 10⁴
3. C4 × 10⁻¹²
4. D4 × 10⁸