정답이 있는 간호학 입학 시험 대비 화학 학습지

균형 잡힌 화학 반응식은 무엇을 나타내나요?

1. A반응의 반응물만 나타낸다
2. B양쪽에 각 종류의 원자 수가 같다
3. C반응물보다 생성물이 더 많다
4. D화살표 앞뒤 양쪽의 분자 수가 같다

중성 원자가 양성자 11개를 가지고 있습니다. 전자는 몇 개인가요?

1. A11개
2. B10개
3. C12개
4. D22개

Where do the mole ratios used in stoichiometry come from?

1. AThe molar masses of the reactants
2. BThe coefficients of the balanced equation
3. CThe physical states of the substances
4. DThe subscripts in each formula

When a nucleus emits an alpha particle, how do its mass number and atomic number change?

1. AMass number stays the same and atomic number rises by 1
2. BMass number falls by 4 and atomic number falls by 2
3. CNeither changes
4. DMass number falls by 2 and atomic number falls by 4

What are isomers?

1. AMolecules that contain the same number of bonds
2. BCompounds with the same structure but different molecular formulas
3. CCompounds with the same molecular formula but different structures
4. DAtoms of the same element with different numbers of neutrons

When a nucleus emits a beta particle, how do its mass number and atomic number change?

1. AMass number stays the same and atomic number rises by 1
2. BBoth fall by 1
3. CMass number rises by 1 and atomic number stays the same
4. DMass number falls by 4 and atomic number falls by 2

어떤 물질은 801 °C에서 녹고, 고체일 때는 전기를 통하지 않지만 녹으면 전기를 통합니다. 가장 가능성이 큰 물질의 종류는 무엇인가요?

1. A금속
2. B단순 공유 결합(분자) 물질
3. C이온 화합물
4. D비활성 기체

Which list puts 0.1 M solutions of HCl, acetic acid (CH₃COOH) and NaCl in order of increasing pH?

1. ACH₃COOH < HCl < NaCl
2. BHCl < CH₃COOH < NaCl
3. CNaCl < CH₃COOH < HCl
4. DHCl < NaCl < CH₃COOH